build(deps): bump filippo.io/edwards25519 from 1.1.0 to 1.1.1 in /test

Bumps [filippo.io/edwards25519](https://github.com/FiloSottile/edwards25519) from 1.1.0 to 1.1.1.
- [Commits](https://github.com/FiloSottile/edwards25519/compare/v1.1.0...v1.1.1)

---
updated-dependencies:
- dependency-name: filippo.io/edwards25519
  dependency-version: 1.1.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/CRONET_GO_VERSION

@@ -1 +1 @@
-2fef65f9dba90ddb89a87d00a6eb6165487c10c1
+ea7cd33752aed62603775af3df946c1b83f4b0b3

adapter/inbound.go

@@ -2,6 +2,7 @@ package adapter
 
 import (
 	"context"
+	"net"
 	"net/netip"
 	"time"
 
@@ -82,6 +83,8 @@ type InboundContext struct {
 	SourceGeoIPCode      string
 	GeoIPCode            string
 	ProcessInfo          *ConnectionOwner
+	SourceMACAddress     net.HardwareAddr
+	SourceHostname       string
 	QueryType            uint16
 	FakeIP               bool
 
@@ -101,6 +104,10 @@ type InboundContext struct {
 func (c *InboundContext) ResetRuleCache() {
 	c.IPCIDRMatchSource = false
 	c.IPCIDRAcceptEmpty = false
+	c.ResetRuleMatchCache()
+}
+
+func (c *InboundContext) ResetRuleMatchCache() {
 	c.SourceAddressMatch = false
 	c.SourcePortMatch = false
 	c.DestinationAddressMatch = false

adapter/neighbor.go

@@ -0,0 +1,23 @@
+package adapter
+
+import (
+	"net"
+	"net/netip"
+)
+
+type NeighborEntry struct {
+	Address    netip.Addr
+	MACAddress net.HardwareAddr
+	Hostname   string
+}
+
+type NeighborResolver interface {
+	LookupMAC(address netip.Addr) (net.HardwareAddr, bool)
+	LookupHostname(address netip.Addr) (string, bool)
+	Start() error
+	Close() error
+}
+
+type NeighborUpdateListener interface {
+	UpdateNeighborTable(entries []NeighborEntry)
+}

adapter/platform.go

@@ -36,6 +36,10 @@ type PlatformInterface interface {
 
 	UsePlatformNotification() bool
 	SendNotification(notification *Notification) error
+
+	UsePlatformNeighborResolver() bool
+	StartNeighborMonitor(listener NeighborUpdateListener) error
+	CloseNeighborMonitor(listener NeighborUpdateListener) error
 }
 
 type FindConnectionOwnerRequest struct {
@@ -47,11 +51,11 @@ type FindConnectionOwnerRequest struct {
 }
 
 type ConnectionOwner struct {
-	ProcessID          uint32
-	UserId             int32
-	UserName           string
-	ProcessPath        string
-	AndroidPackageName string
+	ProcessID           uint32
+	UserId              int32
+	UserName            string
+	ProcessPath         string
+	AndroidPackageNames []string
 }
 
 type Notification struct {

adapter/router.go

@@ -26,6 +26,8 @@ type Router interface {
 	RuleSet(tag string) (RuleSet, bool)
 	Rules() []Rule
 	NeedFindProcess() bool
+	NeedFindNeighbor() bool
+	NeighborResolver() NeighborResolver
 	AppendTracker(tracker ConnectionTracker)
 	ResetNetwork()
 }

common/dialer/default.go

@@ -329,9 +329,9 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 
 func (d *DefaultDialer) DialerForICMPDestination(destination netip.Addr) net.Dialer {
 	if !destination.Is6() {
-		return d.dialer6.Dialer
-	} else {
 		return d.dialer4.Dialer
+	} else {
+		return d.dialer6.Dialer
 	}
 }
 

common/process/searcher.go

@@ -14,6 +14,7 @@ import (
 
 type Searcher interface {
 	FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error)
+	Close() error
 }
 
 var ErrNotFound = E.New("process not found")
@@ -28,7 +29,7 @@ func FindProcessInfo(searcher Searcher, ctx context.Context, network string, sou
 	if err != nil {
 		return nil, err
 	}
-	if info.UserId != -1 {
+	if info.UserId != -1 && info.UserName == "" {
 		osUser, _ := user.LookupId(F.ToString(info.UserId))
 		if osUser != nil {
 			info.UserName = osUser.Username

common/process/searcher_android.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
 )
 
 var _ Searcher = (*androidSearcher)(nil)
@@ -18,22 +19,30 @@ func NewSearcher(config Config) (Searcher, error) {
 	return &androidSearcher{config.PackageManager}, nil
 }
 
+func (s *androidSearcher) Close() error {
+	return nil
+}
+
 func (s *androidSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	_, uid, err := resolveSocketByNetlink(network, source, destination)
+	family, protocol, err := socketDiagSettings(network, source)
 	if err != nil {
 		return nil, err
 	}
-	if sharedPackage, loaded := s.packageManager.SharedPackageByID(uid % 100000); loaded {
-		return &adapter.ConnectionOwner{
-			UserId:             int32(uid),
-			AndroidPackageName: sharedPackage,
-		}, nil
+	_, uid, err := querySocketDiagOnce(family, protocol, source)
+	if err != nil {
+		return nil, err
 	}
-	if packageName, loaded := s.packageManager.PackageByID(uid % 100000); loaded {
-		return &adapter.ConnectionOwner{
-			UserId:             int32(uid),
-			AndroidPackageName: packageName,
-		}, nil
+	appID := uid % 100000
+	var packageNames []string
+	if sharedPackage, loaded := s.packageManager.SharedPackageByID(appID); loaded {
+		packageNames = append(packageNames, sharedPackage)
 	}
-	return &adapter.ConnectionOwner{UserId: int32(uid)}, nil
+	if packages, loaded := s.packageManager.PackagesByID(appID); loaded {
+		packageNames = append(packageNames, packages...)
+	}
+	packageNames = common.Uniq(packageNames)
+	return &adapter.ConnectionOwner{
+		UserId:              int32(uid),
+		AndroidPackageNames: packageNames,
+	}, nil
 }

common/process/searcher_darwin.go

@@ -1,19 +1,15 @@
+//go:build darwin
+
 package process
 
 import (
 	"context"
-	"encoding/binary"
 	"net/netip"
-	"os"
 	"strconv"
 	"strings"
 	"syscall"
-	"unsafe"
 
 	"github.com/sagernet/sing-box/adapter"
-	N "github.com/sagernet/sing/common/network"
-
-	"golang.org/x/sys/unix"
 )
 
 var _ Searcher = (*darwinSearcher)(nil)
@@ -24,12 +20,12 @@ func NewSearcher(_ Config) (Searcher, error) {
 	return &darwinSearcher{}, nil
 }
 
+func (d *darwinSearcher) Close() error {
+	return nil
+}
+
 func (d *darwinSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	processName, err := findProcessName(network, source.Addr(), int(source.Port()))
-	if err != nil {
-		return nil, err
-	}
-	return &adapter.ConnectionOwner{ProcessPath: processName, UserId: -1}, nil
+	return FindDarwinConnectionOwner(network, source, destination)
 }
 
 var structSize = func() int {
@@ -47,107 +43,3 @@ var structSize = func() int {
 		return 384
 	}
 }()
-
-func findProcessName(network string, ip netip.Addr, port int) (string, error) {
-	var spath string
-	switch network {
-	case N.NetworkTCP:
-		spath = "net.inet.tcp.pcblist_n"
-	case N.NetworkUDP:
-		spath = "net.inet.udp.pcblist_n"
-	default:
-		return "", os.ErrInvalid
-	}
-
-	isIPv4 := ip.Is4()
-
-	value, err := unix.SysctlRaw(spath)
-	if err != nil {
-		return "", err
-	}
-
-	buf := value
-
-	// from darwin-xnu/bsd/netinet/in_pcblist.c:get_pcblist_n
-	// size/offset are round up (aligned) to 8 bytes in darwin
-	// rup8(sizeof(xinpcb_n)) + rup8(sizeof(xsocket_n)) +
-	// 2 * rup8(sizeof(xsockbuf_n)) + rup8(sizeof(xsockstat_n))
-	itemSize := structSize
-	if network == N.NetworkTCP {
-		// rup8(sizeof(xtcpcb_n))
-		itemSize += 208
-	}
-
-	var fallbackUDPProcess string
-	// skip the first xinpgen(24 bytes) block
-	for i := 24; i+itemSize <= len(buf); i += itemSize {
-		// offset of xinpcb_n and xsocket_n
-		inp, so := i, i+104
-
-		srcPort := binary.BigEndian.Uint16(buf[inp+18 : inp+20])
-		if uint16(port) != srcPort {
-			continue
-		}
-
-		// xinpcb_n.inp_vflag
-		flag := buf[inp+44]
-
-		var srcIP netip.Addr
-		srcIsIPv4 := false
-		switch {
-		case flag&0x1 > 0 && isIPv4:
-			// ipv4
-			srcIP = netip.AddrFrom4([4]byte(buf[inp+76 : inp+80]))
-			srcIsIPv4 = true
-		case flag&0x2 > 0 && !isIPv4:
-			// ipv6
-			srcIP = netip.AddrFrom16([16]byte(buf[inp+64 : inp+80]))
-		default:
-			continue
-		}
-
-		if ip == srcIP {
-			// xsocket_n.so_last_pid
-			pid := readNativeUint32(buf[so+68 : so+72])
-			return getExecPathFromPID(pid)
-		}
-
-		// udp packet connection may be not equal with srcIP
-		if network == N.NetworkUDP && srcIP.IsUnspecified() && isIPv4 == srcIsIPv4 {
-			pid := readNativeUint32(buf[so+68 : so+72])
-			fallbackUDPProcess, _ = getExecPathFromPID(pid)
-		}
-	}
-
-	if network == N.NetworkUDP && len(fallbackUDPProcess) > 0 {
-		return fallbackUDPProcess, nil
-	}
-
-	return "", ErrNotFound
-}
-
-func getExecPathFromPID(pid uint32) (string, error) {
-	const (
-		procpidpathinfo     = 0xb
-		procpidpathinfosize = 1024
-		proccallnumpidinfo  = 0x2
-	)
-	buf := make([]byte, procpidpathinfosize)
-	_, _, errno := syscall.Syscall6(
-		syscall.SYS_PROC_INFO,
-		proccallnumpidinfo,
-		uintptr(pid),
-		procpidpathinfo,
-		0,
-		uintptr(unsafe.Pointer(&buf[0])),
-		procpidpathinfosize)
-	if errno != 0 {
-		return "", errno
-	}
-
-	return unix.ByteSliceToString(buf), nil
-}
-
-func readNativeUint32(b []byte) uint32 {
-	return *(*uint32)(unsafe.Pointer(&b[0]))
-}

common/process/searcher_darwin_shared.go

@@ -0,0 +1,269 @@
+//go:build darwin
+
+package process
+
+import (
+	"encoding/binary"
+	"net/netip"
+	"os"
+	"sync"
+	"syscall"
+	"time"
+	"unsafe"
+
+	"github.com/sagernet/sing-box/adapter"
+	N "github.com/sagernet/sing/common/network"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	darwinSnapshotTTL = 200 * time.Millisecond
+
+	darwinXinpgenSize        = 24
+	darwinXsocketOffset      = 104
+	darwinXinpcbForeignPort  = 16
+	darwinXinpcbLocalPort    = 18
+	darwinXinpcbVFlag        = 44
+	darwinXinpcbForeignAddr  = 48
+	darwinXinpcbLocalAddr    = 64
+	darwinXinpcbIPv4Addr     = 12
+	darwinXsocketUID         = 64
+	darwinXsocketLastPID     = 68
+	darwinTCPExtraStructSize = 208
+)
+
+type darwinConnectionEntry struct {
+	localAddr  netip.Addr
+	remoteAddr netip.Addr
+	localPort  uint16
+	remotePort uint16
+	pid        uint32
+	uid        int32
+}
+
+type darwinConnectionMatchKind uint8
+
+const (
+	darwinConnectionMatchExact darwinConnectionMatchKind = iota
+	darwinConnectionMatchLocalFallback
+	darwinConnectionMatchWildcardFallback
+)
+
+type darwinSnapshot struct {
+	createdAt time.Time
+	entries   []darwinConnectionEntry
+}
+
+type darwinConnectionFinder struct {
+	access    sync.Mutex
+	ttl       time.Duration
+	snapshots map[string]darwinSnapshot
+	builder   func(string) (darwinSnapshot, error)
+}
+
+var sharedDarwinConnectionFinder = newDarwinConnectionFinder(darwinSnapshotTTL)
+
+func newDarwinConnectionFinder(ttl time.Duration) *darwinConnectionFinder {
+	return &darwinConnectionFinder{
+		ttl:       ttl,
+		snapshots: make(map[string]darwinSnapshot),
+		builder:   buildDarwinSnapshot,
+	}
+}
+
+func FindDarwinConnectionOwner(network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
+	return sharedDarwinConnectionFinder.find(network, source, destination)
+}
+
+func (f *darwinConnectionFinder) find(network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
+	networkName := N.NetworkName(network)
+	source = normalizeDarwinAddrPort(source)
+	destination = normalizeDarwinAddrPort(destination)
+	var lastOwner *adapter.ConnectionOwner
+	for attempt := 0; attempt < 2; attempt++ {
+		snapshot, fromCache, err := f.loadSnapshot(networkName, attempt > 0)
+		if err != nil {
+			return nil, err
+		}
+		entry, matchKind, err := matchDarwinConnectionEntry(snapshot.entries, networkName, source, destination)
+		if err != nil {
+			if err == ErrNotFound && fromCache {
+				continue
+			}
+			return nil, err
+		}
+		if fromCache && matchKind != darwinConnectionMatchExact {
+			continue
+		}
+		owner := &adapter.ConnectionOwner{
+			UserId: entry.uid,
+		}
+		lastOwner = owner
+		if entry.pid == 0 {
+			return owner, nil
+		}
+		processPath, err := getExecPathFromPID(entry.pid)
+		if err == nil {
+			owner.ProcessPath = processPath
+			return owner, nil
+		}
+		if fromCache {
+			continue
+		}
+		return owner, nil
+	}
+	if lastOwner != nil {
+		return lastOwner, nil
+	}
+	return nil, ErrNotFound
+}
+
+func (f *darwinConnectionFinder) loadSnapshot(network string, forceRefresh bool) (darwinSnapshot, bool, error) {
+	f.access.Lock()
+	defer f.access.Unlock()
+	if !forceRefresh {
+		if snapshot, loaded := f.snapshots[network]; loaded && time.Since(snapshot.createdAt) < f.ttl {
+			return snapshot, true, nil
+		}
+	}
+	snapshot, err := f.builder(network)
+	if err != nil {
+		return darwinSnapshot{}, false, err
+	}
+	f.snapshots[network] = snapshot
+	return snapshot, false, nil
+}
+
+func buildDarwinSnapshot(network string) (darwinSnapshot, error) {
+	spath, itemSize, err := darwinSnapshotSettings(network)
+	if err != nil {
+		return darwinSnapshot{}, err
+	}
+	value, err := unix.SysctlRaw(spath)
+	if err != nil {
+		return darwinSnapshot{}, err
+	}
+	return darwinSnapshot{
+		createdAt: time.Now(),
+		entries:   parseDarwinSnapshot(value, itemSize),
+	}, nil
+}
+
+func darwinSnapshotSettings(network string) (string, int, error) {
+	itemSize := structSize
+	switch network {
+	case N.NetworkTCP:
+		return "net.inet.tcp.pcblist_n", itemSize + darwinTCPExtraStructSize, nil
+	case N.NetworkUDP:
+		return "net.inet.udp.pcblist_n", itemSize, nil
+	default:
+		return "", 0, os.ErrInvalid
+	}
+}
+
+func parseDarwinSnapshot(buf []byte, itemSize int) []darwinConnectionEntry {
+	entries := make([]darwinConnectionEntry, 0, (len(buf)-darwinXinpgenSize)/itemSize)
+	for i := darwinXinpgenSize; i+itemSize <= len(buf); i += itemSize {
+		inp := i
+		so := i + darwinXsocketOffset
+		entry, ok := parseDarwinConnectionEntry(buf[inp:so], buf[so:so+structSize-darwinXsocketOffset])
+		if ok {
+			entries = append(entries, entry)
+		}
+	}
+	return entries
+}
+
+func parseDarwinConnectionEntry(inp []byte, so []byte) (darwinConnectionEntry, bool) {
+	if len(inp) < darwinXsocketOffset || len(so) < structSize-darwinXsocketOffset {
+		return darwinConnectionEntry{}, false
+	}
+	entry := darwinConnectionEntry{
+		remotePort: binary.BigEndian.Uint16(inp[darwinXinpcbForeignPort : darwinXinpcbForeignPort+2]),
+		localPort:  binary.BigEndian.Uint16(inp[darwinXinpcbLocalPort : darwinXinpcbLocalPort+2]),
+		pid:        binary.NativeEndian.Uint32(so[darwinXsocketLastPID : darwinXsocketLastPID+4]),
+		uid:        int32(binary.NativeEndian.Uint32(so[darwinXsocketUID : darwinXsocketUID+4])),
+	}
+	flag := inp[darwinXinpcbVFlag]
+	switch {
+	case flag&0x1 != 0:
+		entry.remoteAddr = netip.AddrFrom4([4]byte(inp[darwinXinpcbForeignAddr+darwinXinpcbIPv4Addr : darwinXinpcbForeignAddr+darwinXinpcbIPv4Addr+4]))
+		entry.localAddr = netip.AddrFrom4([4]byte(inp[darwinXinpcbLocalAddr+darwinXinpcbIPv4Addr : darwinXinpcbLocalAddr+darwinXinpcbIPv4Addr+4]))
+		return entry, true
+	case flag&0x2 != 0:
+		entry.remoteAddr = netip.AddrFrom16([16]byte(inp[darwinXinpcbForeignAddr : darwinXinpcbForeignAddr+16]))
+		entry.localAddr = netip.AddrFrom16([16]byte(inp[darwinXinpcbLocalAddr : darwinXinpcbLocalAddr+16]))
+		return entry, true
+	default:
+		return darwinConnectionEntry{}, false
+	}
+}
+
+func matchDarwinConnectionEntry(entries []darwinConnectionEntry, network string, source netip.AddrPort, destination netip.AddrPort) (darwinConnectionEntry, darwinConnectionMatchKind, error) {
+	sourceAddr := source.Addr()
+	if !sourceAddr.IsValid() {
+		return darwinConnectionEntry{}, darwinConnectionMatchExact, os.ErrInvalid
+	}
+	var localFallback darwinConnectionEntry
+	var hasLocalFallback bool
+	var wildcardFallback darwinConnectionEntry
+	var hasWildcardFallback bool
+	for _, entry := range entries {
+		if entry.localPort != source.Port() || sourceAddr.BitLen() != entry.localAddr.BitLen() {
+			continue
+		}
+		if entry.localAddr == sourceAddr && destination.IsValid() && entry.remotePort == destination.Port() && entry.remoteAddr == destination.Addr() {
+			return entry, darwinConnectionMatchExact, nil
+		}
+		if !destination.IsValid() && entry.localAddr == sourceAddr {
+			return entry, darwinConnectionMatchExact, nil
+		}
+		if network != N.NetworkUDP {
+			continue
+		}
+		if !hasLocalFallback && entry.localAddr == sourceAddr {
+			hasLocalFallback = true
+			localFallback = entry
+		}
+		if !hasWildcardFallback && entry.localAddr.IsUnspecified() {
+			hasWildcardFallback = true
+			wildcardFallback = entry
+		}
+	}
+	if hasLocalFallback {
+		return localFallback, darwinConnectionMatchLocalFallback, nil
+	}
+	if hasWildcardFallback {
+		return wildcardFallback, darwinConnectionMatchWildcardFallback, nil
+	}
+	return darwinConnectionEntry{}, darwinConnectionMatchExact, ErrNotFound
+}
+
+func normalizeDarwinAddrPort(addrPort netip.AddrPort) netip.AddrPort {
+	if !addrPort.IsValid() {
+		return addrPort
+	}
+	return netip.AddrPortFrom(addrPort.Addr().Unmap(), addrPort.Port())
+}
+
+func getExecPathFromPID(pid uint32) (string, error) {
+	const (
+		procpidpathinfo     = 0xb
+		procpidpathinfosize = 1024
+		proccallnumpidinfo  = 0x2
+	)
+	buf := make([]byte, procpidpathinfosize)
+	_, _, errno := syscall.Syscall6(
+		syscall.SYS_PROC_INFO,
+		proccallnumpidinfo,
+		uintptr(pid),
+		procpidpathinfo,
+		0,
+		uintptr(unsafe.Pointer(&buf[0])),
+		procpidpathinfosize)
+	if errno != 0 {
+		return "", errno
+	}
+	return unix.ByteSliceToString(buf), nil
+}

common/process/searcher_linux.go

@@ -4,33 +4,82 @@ package process
 
 import (
 	"context"
+	"errors"
 	"net/netip"
+	"syscall"
+	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/log"
+	E "github.com/sagernet/sing/common/exceptions"
 )
 
 var _ Searcher = (*linuxSearcher)(nil)
 
 type linuxSearcher struct {
-	logger log.ContextLogger
+	logger           log.ContextLogger
+	diagConns        [4]*socketDiagConn
+	processPathCache *uidProcessPathCache
 }
 
 func NewSearcher(config Config) (Searcher, error) {
-	return &linuxSearcher{config.Logger}, nil
+	searcher := &linuxSearcher{
+		logger:           config.Logger,
+		processPathCache: newUIDProcessPathCache(time.Second),
+	}
+	for _, family := range []uint8{syscall.AF_INET, syscall.AF_INET6} {
+		for _, protocol := range []uint8{syscall.IPPROTO_TCP, syscall.IPPROTO_UDP} {
+			searcher.diagConns[socketDiagConnIndex(family, protocol)] = newSocketDiagConn(family, protocol)
+		}
+	}
+	return searcher, nil
+}
+
+func (s *linuxSearcher) Close() error {
+	var errs []error
+	for _, conn := range s.diagConns {
+		if conn == nil {
+			continue
+		}
+		errs = append(errs, conn.Close())
+	}
+	return E.Errors(errs...)
 }
 
 func (s *linuxSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
-	inode, uid, err := resolveSocketByNetlink(network, source, destination)
+	inode, uid, err := s.resolveSocketByNetlink(network, source, destination)
 	if err != nil {
 		return nil, err
 	}
-	processPath, err := resolveProcessNameByProcSearch(inode, uid)
+	processInfo := &adapter.ConnectionOwner{
+		UserId: int32(uid),
+	}
+	processPath, err := s.processPathCache.findProcessPath(inode, uid)
 	if err != nil {
 		s.logger.DebugContext(ctx, "find process path: ", err)
+	} else {
+		processInfo.ProcessPath = processPath
 	}
-	return &adapter.ConnectionOwner{
-		UserId:      int32(uid),
-		ProcessPath: processPath,
-	}, nil
+	return processInfo, nil
+}
+
+func (s *linuxSearcher) resolveSocketByNetlink(network string, source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
+	family, protocol, err := socketDiagSettings(network, source)
+	if err != nil {
+		return 0, 0, err
+	}
+	conn := s.diagConns[socketDiagConnIndex(family, protocol)]
+	if conn == nil {
+		return 0, 0, E.New("missing socket diag connection for family=", family, " protocol=", protocol)
+	}
+	if destination.IsValid() && source.Addr().BitLen() == destination.Addr().BitLen() {
+		inode, uid, err = conn.query(source, destination)
+		if err == nil {
+			return inode, uid, nil
+		}
+		if !errors.Is(err, ErrNotFound) {
+			return 0, 0, err
+		}
+	}
+	return querySocketDiagOnce(family, protocol, source)
 }

common/process/searcher_linux_shared.go

@@ -3,43 +3,67 @@
 package process
 
 import (
-	"bytes"
 	"encoding/binary"
-	"fmt"
-	"net"
+	"errors"
 	"net/netip"
 	"os"
-	"path"
+	"path/filepath"
 	"strings"
+	"sync"
 	"syscall"
+	"time"
 	"unicode"
-	"unsafe"
 
-	"github.com/sagernet/sing/common/buf"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/contrab/freelru"
+	"github.com/sagernet/sing/contrab/maphash"
 )
 
-// from https://github.com/vishvananda/netlink/blob/bca67dfc8220b44ef582c9da4e9172bf1c9ec973/nl/nl_linux.go#L52-L62
-var nativeEndian = func() binary.ByteOrder {
-	var x uint32 = 0x01020304
-	if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
-		return binary.BigEndian
-	}
-
-	return binary.LittleEndian
-}()
-
 const (
-	sizeOfSocketDiagRequest = syscall.SizeofNlMsghdr + 8 + 48
-	socketDiagByFamily      = 20
-	pathProc                = "/proc"
+	sizeOfSocketDiagRequestData = 56
+	sizeOfSocketDiagRequest     = syscall.SizeofNlMsghdr + sizeOfSocketDiagRequestData
+	socketDiagResponseMinSize   = 72
+	socketDiagByFamily          = 20
+	pathProc                    = "/proc"
 )
 
-func resolveSocketByNetlink(network string, source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
-	var family uint8
-	var protocol uint8
+type socketDiagConn struct {
+	access   sync.Mutex
+	family   uint8
+	protocol uint8
+	fd       int
+}
 
+type uidProcessPathCache struct {
+	cache freelru.Cache[uint32, *uidProcessPaths]
+}
+
+type uidProcessPaths struct {
+	entries map[uint32]string
+}
+
+func newSocketDiagConn(family, protocol uint8) *socketDiagConn {
+	return &socketDiagConn{
+		family:   family,
+		protocol: protocol,
+		fd:       -1,
+	}
+}
+
+func socketDiagConnIndex(family, protocol uint8) int {
+	index := 0
+	if protocol == syscall.IPPROTO_UDP {
+		index += 2
+	}
+	if family == syscall.AF_INET6 {
+		index++
+	}
+	return index
+}
+
+func socketDiagSettings(network string, source netip.AddrPort) (family, protocol uint8, err error) {
 	switch network {
 	case N.NetworkTCP:
 		protocol = syscall.IPPROTO_TCP
@@ -48,151 +72,308 @@ func resolveSocketByNetlink(network string, source netip.AddrPort, destination n
 	default:
 		return 0, 0, os.ErrInvalid
 	}
-
-	if source.Addr().Is4() {
+	switch {
+	case source.Addr().Is4():
 		family = syscall.AF_INET
-	} else {
+	case source.Addr().Is6():
 		family = syscall.AF_INET6
+	default:
+		return 0, 0, os.ErrInvalid
 	}
-
-	req := packSocketDiagRequest(family, protocol, source)
-
-	socket, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM, syscall.NETLINK_INET_DIAG)
-	if err != nil {
-		return 0, 0, E.Cause(err, "dial netlink")
-	}
-	defer syscall.Close(socket)
-
-	syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, &syscall.Timeval{Usec: 100})
-	syscall.SetsockoptTimeval(socket, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, &syscall.Timeval{Usec: 100})
-
-	err = syscall.Connect(socket, &syscall.SockaddrNetlink{
-		Family: syscall.AF_NETLINK,
-		Pad:    0,
-		Pid:    0,
-		Groups: 0,
-	})
-	if err != nil {
-		return
-	}
-
-	_, err = syscall.Write(socket, req)
-	if err != nil {
-		return 0, 0, E.Cause(err, "write netlink request")
-	}
-
-	buffer := buf.New()
-	defer buffer.Release()
-
-	n, err := syscall.Read(socket, buffer.FreeBytes())
-	if err != nil {
-		return 0, 0, E.Cause(err, "read netlink response")
-	}
-
-	buffer.Truncate(n)
-
-	messages, err := syscall.ParseNetlinkMessage(buffer.Bytes())
-	if err != nil {
-		return 0, 0, E.Cause(err, "parse netlink message")
-	} else if len(messages) == 0 {
-		return 0, 0, E.New("unexcepted netlink response")
-	}
-
-	message := messages[0]
-	if message.Header.Type&syscall.NLMSG_ERROR != 0 {
-		return 0, 0, E.New("netlink message: NLMSG_ERROR")
-	}
-
-	inode, uid = unpackSocketDiagResponse(&messages[0])
-	return
+	return family, protocol, nil
 }
 
-func packSocketDiagRequest(family, protocol byte, source netip.AddrPort) []byte {
-	s := make([]byte, 16)
-	copy(s, source.Addr().AsSlice())
-
-	buf := make([]byte, sizeOfSocketDiagRequest)
-
-	nativeEndian.PutUint32(buf[0:4], sizeOfSocketDiagRequest)
-	nativeEndian.PutUint16(buf[4:6], socketDiagByFamily)
-	nativeEndian.PutUint16(buf[6:8], syscall.NLM_F_REQUEST|syscall.NLM_F_DUMP)
-	nativeEndian.PutUint32(buf[8:12], 0)
-	nativeEndian.PutUint32(buf[12:16], 0)
-
-	buf[16] = family
-	buf[17] = protocol
-	buf[18] = 0
-	buf[19] = 0
-	nativeEndian.PutUint32(buf[20:24], 0xFFFFFFFF)
-
-	binary.BigEndian.PutUint16(buf[24:26], source.Port())
-	binary.BigEndian.PutUint16(buf[26:28], 0)
-
-	copy(buf[28:44], s)
-	copy(buf[44:60], net.IPv6zero)
-
-	nativeEndian.PutUint32(buf[60:64], 0)
-	nativeEndian.PutUint64(buf[64:72], 0xFFFFFFFFFFFFFFFF)
-
-	return buf
+func newUIDProcessPathCache(ttl time.Duration) *uidProcessPathCache {
+	cache := common.Must1(freelru.NewSharded[uint32, *uidProcessPaths](64, maphash.NewHasher[uint32]().Hash32))
+	cache.SetLifetime(ttl)
+	return &uidProcessPathCache{cache: cache}
 }
 
-func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid uint32) {
-	if len(msg.Data) < 72 {
-		return 0, 0
+func (c *uidProcessPathCache) findProcessPath(targetInode, uid uint32) (string, error) {
+	if cached, ok := c.cache.Get(uid); ok {
+		if processPath, found := cached.entries[targetInode]; found {
+			return processPath, nil
+		}
 	}
-
-	data := msg.Data
-
-	uid = nativeEndian.Uint32(data[64:68])
-	inode = nativeEndian.Uint32(data[68:72])
-
-	return
-}
-
-func resolveProcessNameByProcSearch(inode, uid uint32) (string, error) {
-	files, err := os.ReadDir(pathProc)
+	processPaths, err := buildProcessPathByUIDCache(uid)
 	if err != nil {
 		return "", err
 	}
+	c.cache.Add(uid, &uidProcessPaths{entries: processPaths})
+	processPath, found := processPaths[targetInode]
+	if !found {
+		return "", E.New("process of uid(", uid, "), inode(", targetInode, ") not found")
+	}
+	return processPath, nil
+}
 
+func (c *socketDiagConn) Close() error {
+	c.access.Lock()
+	defer c.access.Unlock()
+	return c.closeLocked()
+}
+
+func (c *socketDiagConn) query(source netip.AddrPort, destination netip.AddrPort) (inode, uid uint32, err error) {
+	c.access.Lock()
+	defer c.access.Unlock()
+	request := packSocketDiagRequest(c.family, c.protocol, source, destination, false)
+	for attempt := 0; attempt < 2; attempt++ {
+		err = c.ensureOpenLocked()
+		if err != nil {
+			return 0, 0, E.Cause(err, "dial netlink")
+		}
+		inode, uid, err = querySocketDiag(c.fd, request)
+		if err == nil || errors.Is(err, ErrNotFound) {
+			return inode, uid, err
+		}
+		if !shouldRetrySocketDiag(err) {
+			return 0, 0, err
+		}
+		_ = c.closeLocked()
+	}
+	return 0, 0, err
+}
+
+func querySocketDiagOnce(family, protocol uint8, source netip.AddrPort) (inode, uid uint32, err error) {
+	fd, err := openSocketDiag()
+	if err != nil {
+		return 0, 0, E.Cause(err, "dial netlink")
+	}
+	defer syscall.Close(fd)
+	return querySocketDiag(fd, packSocketDiagRequest(family, protocol, source, netip.AddrPort{}, true))
+}
+
+func (c *socketDiagConn) ensureOpenLocked() error {
+	if c.fd != -1 {
+		return nil
+	}
+	fd, err := openSocketDiag()
+	if err != nil {
+		return err
+	}
+	c.fd = fd
+	return nil
+}
+
+func openSocketDiag() (int, error) {
+	fd, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM|syscall.SOCK_CLOEXEC, syscall.NETLINK_INET_DIAG)
+	if err != nil {
+		return -1, err
+	}
+	timeout := &syscall.Timeval{Usec: 100}
+	if err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, timeout); err != nil {
+		syscall.Close(fd)
+		return -1, err
+	}
+	if err = syscall.SetsockoptTimeval(fd, syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, timeout); err != nil {
+		syscall.Close(fd)
+		return -1, err
+	}
+	if err = syscall.Connect(fd, &syscall.SockaddrNetlink{
+		Family: syscall.AF_NETLINK,
+		Pid:    0,
+		Groups: 0,
+	}); err != nil {
+		syscall.Close(fd)
+		return -1, err
+	}
+	return fd, nil
+}
+
+func (c *socketDiagConn) closeLocked() error {
+	if c.fd == -1 {
+		return nil
+	}
+	err := syscall.Close(c.fd)
+	c.fd = -1
+	return err
+}
+
+func packSocketDiagRequest(family, protocol byte, source netip.AddrPort, destination netip.AddrPort, dump bool) []byte {
+	request := make([]byte, sizeOfSocketDiagRequest)
+
+	binary.NativeEndian.PutUint32(request[0:4], sizeOfSocketDiagRequest)
+	binary.NativeEndian.PutUint16(request[4:6], socketDiagByFamily)
+	flags := uint16(syscall.NLM_F_REQUEST)
+	if dump {
+		flags |= syscall.NLM_F_DUMP
+	}
+	binary.NativeEndian.PutUint16(request[6:8], flags)
+	binary.NativeEndian.PutUint32(request[8:12], 0)
+	binary.NativeEndian.PutUint32(request[12:16], 0)
+
+	request[16] = family
+	request[17] = protocol
+	request[18] = 0
+	request[19] = 0
+	if dump {
+		binary.NativeEndian.PutUint32(request[20:24], 0xFFFFFFFF)
+	}
+	requestSource := source
+	requestDestination := destination
+	if protocol == syscall.IPPROTO_UDP && !dump && destination.IsValid() {
+		// udp_dump_one expects the exact-match endpoints reversed for historical reasons.
+		requestSource, requestDestination = destination, source
+	}
+	binary.BigEndian.PutUint16(request[24:26], requestSource.Port())
+	binary.BigEndian.PutUint16(request[26:28], requestDestination.Port())
+	if family == syscall.AF_INET6 {
+		copy(request[28:44], requestSource.Addr().AsSlice())
+		if requestDestination.IsValid() {
+			copy(request[44:60], requestDestination.Addr().AsSlice())
+		}
+	} else {
+		copy(request[28:32], requestSource.Addr().AsSlice())
+		if requestDestination.IsValid() {
+			copy(request[44:48], requestDestination.Addr().AsSlice())
+		}
+	}
+	binary.NativeEndian.PutUint32(request[60:64], 0)
+	binary.NativeEndian.PutUint64(request[64:72], 0xFFFFFFFFFFFFFFFF)
+	return request
+}
+
+func querySocketDiag(fd int, request []byte) (inode, uid uint32, err error) {
+	_, err = syscall.Write(fd, request)
+	if err != nil {
+		return 0, 0, E.Cause(err, "write netlink request")
+	}
+	buffer := make([]byte, 64<<10)
+	n, err := syscall.Read(fd, buffer)
+	if err != nil {
+		return 0, 0, E.Cause(err, "read netlink response")
+	}
+	messages, err := syscall.ParseNetlinkMessage(buffer[:n])
+	if err != nil {
+		return 0, 0, E.Cause(err, "parse netlink message")
+	}
+	return unpackSocketDiagMessages(messages)
+}
+
+func unpackSocketDiagMessages(messages []syscall.NetlinkMessage) (inode, uid uint32, err error) {
+	for _, message := range messages {
+		switch message.Header.Type {
+		case syscall.NLMSG_DONE:
+			continue
+		case syscall.NLMSG_ERROR:
+			err = unpackSocketDiagError(&message)
+			if err != nil {
+				return 0, 0, err
+			}
+		case socketDiagByFamily:
+			inode, uid = unpackSocketDiagResponse(&message)
+			if inode != 0 || uid != 0 {
+				return inode, uid, nil
+			}
+		}
+	}
+	return 0, 0, ErrNotFound
+}
+
+func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid uint32) {
+	if len(msg.Data) < socketDiagResponseMinSize {
+		return 0, 0
+	}
+	uid = binary.NativeEndian.Uint32(msg.Data[64:68])
+	inode = binary.NativeEndian.Uint32(msg.Data[68:72])
+	return inode, uid
+}
+
+func unpackSocketDiagError(msg *syscall.NetlinkMessage) error {
+	if len(msg.Data) < 4 {
+		return E.New("netlink message: NLMSG_ERROR")
+	}
+	errno := int32(binary.NativeEndian.Uint32(msg.Data[:4]))
+	if errno == 0 {
+		return nil
+	}
+	if errno < 0 {
+		errno = -errno
+	}
+	sysErr := syscall.Errno(errno)
+	switch sysErr {
+	case syscall.ENOENT, syscall.ESRCH:
+		return ErrNotFound
+	default:
+		return E.New("netlink message: ", sysErr)
+	}
+}
+
+func shouldRetrySocketDiag(err error) bool {
+	return err != nil && !errors.Is(err, ErrNotFound)
+}
+
+func buildProcessPathByUIDCache(uid uint32) (map[uint32]string, error) {
+	files, err := os.ReadDir(pathProc)
+	if err != nil {
+		return nil, err
+	}
 	buffer := make([]byte, syscall.PathMax)
-	socket := []byte(fmt.Sprintf("socket:[%d]", inode))
-
-	for _, f := range files {
-		if !f.IsDir() || !isPid(f.Name()) {
+	processPaths := make(map[uint32]string)
+	for _, file := range files {
+		if !file.IsDir() || !isPid(file.Name()) {
 			continue
 		}
-
-		info, err := f.Info()
+		info, err := file.Info()
 		if err != nil {
-			return "", err
+			if isIgnorableProcError(err) {
+				continue
+			}
+			return nil, err
 		}
 		if info.Sys().(*syscall.Stat_t).Uid != uid {
 			continue
 		}
-
-		processPath := path.Join(pathProc, f.Name())
-		fdPath := path.Join(processPath, "fd")
-
+		processPath := filepath.Join(pathProc, file.Name())
+		fdPath := filepath.Join(processPath, "fd")
+		exePath, err := os.Readlink(filepath.Join(processPath, "exe"))
+		if err != nil {
+			if isIgnorableProcError(err) {
+				continue
+			}
+			return nil, err
+		}
 		fds, err := os.ReadDir(fdPath)
 		if err != nil {
 			continue
 		}
-
 		for _, fd := range fds {
-			n, err := syscall.Readlink(path.Join(fdPath, fd.Name()), buffer)
+			n, err := syscall.Readlink(filepath.Join(fdPath, fd.Name()), buffer)
 			if err != nil {
 				continue
 			}
-
-			if bytes.Equal(buffer[:n], socket) {
-				return os.Readlink(path.Join(processPath, "exe"))
+			inode, ok := parseSocketInode(buffer[:n])
+			if !ok {
+				continue
+			}
+			if _, loaded := processPaths[inode]; !loaded {
+				processPaths[inode] = exePath
 			}
 		}
 	}
+	return processPaths, nil
+}
 
-	return "", fmt.Errorf("process of uid(%d),inode(%d) not found", uid, inode)
+func isIgnorableProcError(err error) bool {
+	return os.IsNotExist(err) || os.IsPermission(err)
+}
+
+func parseSocketInode(link []byte) (uint32, bool) {
+	const socketPrefix = "socket:["
+	if len(link) <= len(socketPrefix) || string(link[:len(socketPrefix)]) != socketPrefix || link[len(link)-1] != ']' {
+		return 0, false
+	}
+	var inode uint64
+	for _, char := range link[len(socketPrefix) : len(link)-1] {
+		if char < '0' || char > '9' {
+			return 0, false
+		}
+		inode = inode*10 + uint64(char-'0')
+		if inode > uint64(^uint32(0)) {
+			return 0, false
+		}
+	}
+	return uint32(inode), true
 }
 
 func isPid(s string) bool {

common/process/searcher_linux_shared_test.go

@@ -0,0 +1,60 @@
+//go:build linux
+
+package process
+
+import (
+	"net"
+	"net/netip"
+	"os"
+	"syscall"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestQuerySocketDiagUDPExact(t *testing.T) {
+	t.Parallel()
+	server, err := net.ListenUDP("udp4", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer server.Close()
+
+	client, err := net.DialUDP("udp4", nil, server.LocalAddr().(*net.UDPAddr))
+	require.NoError(t, err)
+	defer client.Close()
+
+	err = client.SetDeadline(time.Now().Add(time.Second))
+	require.NoError(t, err)
+	_, err = client.Write([]byte{0})
+	require.NoError(t, err)
+
+	err = server.SetReadDeadline(time.Now().Add(time.Second))
+	require.NoError(t, err)
+	buffer := make([]byte, 1)
+	_, _, err = server.ReadFromUDP(buffer)
+	require.NoError(t, err)
+
+	source := addrPortFromUDPAddr(t, client.LocalAddr())
+	destination := addrPortFromUDPAddr(t, client.RemoteAddr())
+
+	fd, err := openSocketDiag()
+	require.NoError(t, err)
+	defer syscall.Close(fd)
+
+	inode, uid, err := querySocketDiag(fd, packSocketDiagRequest(syscall.AF_INET, syscall.IPPROTO_UDP, source, destination, false))
+	require.NoError(t, err)
+	require.NotZero(t, inode)
+	require.EqualValues(t, os.Getuid(), uid)
+}
+
+func addrPortFromUDPAddr(t *testing.T, addr net.Addr) netip.AddrPort {
+	t.Helper()
+
+	udpAddr, ok := addr.(*net.UDPAddr)
+	require.True(t, ok)
+
+	ip, ok := netip.AddrFromSlice(udpAddr.IP)
+	require.True(t, ok)
+
+	return netip.AddrPortFrom(ip.Unmap(), uint16(udpAddr.Port))
+}

common/process/searcher_windows.go

@@ -28,6 +28,10 @@ func initWin32API() error {
 	return winiphlpapi.LoadExtendedTable()
 }
 
+func (s *windowsSearcher) Close() error {
+	return nil
+}
+
 func (s *windowsSearcher) FindProcessInfo(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
 	pid, err := winiphlpapi.FindPid(network, source)
 	if err != nil {

daemon/started_service.go

@@ -168,7 +168,7 @@ func (s *StartedService) waitForStarted(ctx context.Context) error {
 func (s *StartedService) StartOrReloadService(profileContent string, options *OverrideOptions) error {
 	s.serviceAccess.Lock()
 	switch s.serviceStatus.Status {
-	case ServiceStatus_IDLE, ServiceStatus_STARTED, ServiceStatus_STARTING:
+	case ServiceStatus_IDLE, ServiceStatus_STARTED, ServiceStatus_STARTING, ServiceStatus_FATAL:
 	default:
 		s.serviceAccess.Unlock()
 		return os.ErrInvalid
@@ -226,13 +226,14 @@ func (s *StartedService) CloseService() error {
 		return os.ErrInvalid
 	}
 	s.updateStatus(ServiceStatus_STOPPING)
-	if s.instance != nil {
-		err := s.instance.Close()
+	instance := s.instance
+	s.instance = nil
+	if instance != nil {
+		err := instance.Close()
 		if err != nil {
 			return s.updateStatusError(err)
 		}
 	}
-	s.instance = nil
 	s.startedAt = time.Time{}
 	s.updateStatus(ServiceStatus_IDLE)
 	s.serviceAccess.Unlock()
@@ -949,11 +950,11 @@ func buildConnectionProto(metadata *trafficontrol.TrackerMetadata) *Connection {
 	var processInfo *ProcessInfo
 	if metadata.Metadata.ProcessInfo != nil {
 		processInfo = &ProcessInfo{
-			ProcessId:   metadata.Metadata.ProcessInfo.ProcessID,
-			UserId:      metadata.Metadata.ProcessInfo.UserId,
-			UserName:    metadata.Metadata.ProcessInfo.UserName,
-			ProcessPath: metadata.Metadata.ProcessInfo.ProcessPath,
-			PackageName: metadata.Metadata.ProcessInfo.AndroidPackageName,
+			ProcessId:    metadata.Metadata.ProcessInfo.ProcessID,
+			UserId:       metadata.Metadata.ProcessInfo.UserId,
+			UserName:     metadata.Metadata.ProcessInfo.UserName,
+			ProcessPath:  metadata.Metadata.ProcessInfo.ProcessPath,
+			PackageNames: metadata.Metadata.ProcessInfo.AndroidPackageNames,
 		}
 	}
 	return &Connection{

daemon/started_service.pb.go

@@ -1460,7 +1460,7 @@ type ProcessInfo struct {
 	UserId        int32                  `protobuf:"varint,2,opt,name=userId,proto3" json:"userId,omitempty"`
 	UserName      string                 `protobuf:"bytes,3,opt,name=userName,proto3" json:"userName,omitempty"`
 	ProcessPath   string                 `protobuf:"bytes,4,opt,name=processPath,proto3" json:"processPath,omitempty"`
-	PackageName   string                 `protobuf:"bytes,5,opt,name=packageName,proto3" json:"packageName,omitempty"`
+	PackageNames  []string               `protobuf:"bytes,5,rep,name=packageNames,proto3" json:"packageNames,omitempty"`
 	unknownFields protoimpl.UnknownFields
 	sizeCache     protoimpl.SizeCache
 }
@@ -1523,11 +1523,11 @@ func (x *ProcessInfo) GetProcessPath() string {
 	return ""
 }
 
-func (x *ProcessInfo) GetPackageName() string {
+func (x *ProcessInfo) GetPackageNames() []string {
 	if x != nil {
-		return x.PackageName
+		return x.PackageNames
 	}
-	return ""
+	return nil
 }
 
 type CloseConnectionRequest struct {
@@ -1884,13 +1884,13 @@ const file_daemon_started_service_proto_rawDesc = "" +
 	"\boutbound\x18\x13 \x01(\tR\boutbound\x12\"\n" +
 	"\foutboundType\x18\x14 \x01(\tR\foutboundType\x12\x1c\n" +
 	"\tchainList\x18\x15 \x03(\tR\tchainList\x125\n" +
-	"\vprocessInfo\x18\x16 \x01(\v2\x13.daemon.ProcessInfoR\vprocessInfo\"\xa3\x01\n" +
+	"\vprocessInfo\x18\x16 \x01(\v2\x13.daemon.ProcessInfoR\vprocessInfo\"\xa5\x01\n" +
 	"\vProcessInfo\x12\x1c\n" +
 	"\tprocessId\x18\x01 \x01(\rR\tprocessId\x12\x16\n" +
 	"\x06userId\x18\x02 \x01(\x05R\x06userId\x12\x1a\n" +
 	"\buserName\x18\x03 \x01(\tR\buserName\x12 \n" +
-	"\vprocessPath\x18\x04 \x01(\tR\vprocessPath\x12 \n" +
-	"\vpackageName\x18\x05 \x01(\tR\vpackageName\"(\n" +
+	"\vprocessPath\x18\x04 \x01(\tR\vprocessPath\x12\"\n" +
+	"\fpackageNames\x18\x05 \x03(\tR\fpackageNames\"(\n" +
 	"\x16CloseConnectionRequest\x12\x0e\n" +
 	"\x02id\x18\x01 \x01(\tR\x02id\"K\n" +
 	"\x12DeprecatedWarnings\x125\n" +

daemon/started_service.proto

@@ -195,7 +195,7 @@ message ProcessInfo {
   int32 userId = 2;
   string userName = 3;
   string processPath = 4;
-  string packageName = 5;
+  repeated string packageNames = 5;
 }
 
 message CloseConnectionRequest {

dns/transport/dhcp/dhcp_shared.go

@@ -7,7 +7,6 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -40,13 +39,6 @@ func (t *Transport) exchangeParallel(ctx context.Context, servers []M.Socksaddr,
 	results := make(chan queryResult)
 	startRacer := func(ctx context.Context, fqdn string) {
 		response, err := t.tryOneName(ctx, servers, fqdn, message)
-		if err == nil {
-			if response.Rcode != mDNS.RcodeSuccess {
-				err = dns.RcodeError(response.Rcode)
-			} else if len(dns.MessageToAddresses(response)) == 0 {
-				err = dns.RcodeSuccess
-			}
-		}
 		select {
 		case results <- queryResult{response, err}:
 		case <-returned:

dns/transport/local/local_shared.go

@@ -7,7 +7,6 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/sagernet/sing-box/dns"
 	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -49,13 +48,6 @@ func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfi
 	results := make(chan queryResult)
 	startRacer := func(ctx context.Context, fqdn string) {
 		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
-		if err == nil {
-			if response.Rcode != mDNS.RcodeSuccess {
-				err = dns.RcodeError(response.Rcode)
-			} else if len(dns.MessageToAddresses(response)) == 0 {
-				err = E.New(fqdn, ": empty result")
-			}
-		}
 		select {
 		case results <- queryResult{response, err}:
 		case <-returned:

docs/changelog.md

@@ -2,6 +2,14 @@
 icon: material/alert-decagram
 ---
 
+#### 1.14.0-alpha.4
+
+* Fixes and improvements
+
+#### 1.13.4-beta.1
+
+* Fixes and improvements
+
 #### 1.13.3
 
 * Add OpenWrt and Alpine APK packages to release **1**
@@ -26,6 +34,59 @@ from [SagerNet/go](https://github.com/SagerNet/go).
 
 See [OCM](/configuration/service/ocm).
 
+#### 1.12.24
+
+* Fixes and improvements
+
+#### 1.14.0-alpha.2
+
+* Add OpenWrt and Alpine APK packages to release **1**
+* Backport to macOS 10.13 High Sierra **2**
+* OCM service: Add WebSocket support for Responses API **3**
+* Fixes and improvements
+
+**1**:
+
+Alpine APK files use `linux` in the filename to distinguish from OpenWrt APKs which use the `openwrt` prefix:
+
+- OpenWrt: `sing-box_{version}_openwrt_{architecture}.apk`
+- Alpine: `sing-box_{version}_linux_{architecture}.apk`
+
+**2**:
+
+Legacy macOS binaries (with `-legacy-macos-10.13` suffix) now support
+macOS 10.13 High Sierra, built using Go 1.25 with patches
+from [SagerNet/go](https://github.com/SagerNet/go).
+
+**3**:
+
+See [OCM](/configuration/service/ocm).
+
+#### 1.14.0-alpha.1
+
+* Add `source_mac_address` and `source_hostname` rule items **1**
+* Add `include_mac_address` and `exclude_mac_address` TUN options **2**
+* Update NaiveProxy to 145.0.7632.159 **3**
+* Fixes and improvements
+
+**1**:
+
+New rule items for matching LAN devices by MAC address and hostname via neighbor resolution.
+Supported on Linux, macOS, or in graphical clients on Android and macOS.
+
+See [Route Rule](/configuration/route/rule/#source_mac_address), [DNS Rule](/configuration/dns/rule/#source_mac_address) and [Neighbor Resolution](/configuration/shared/neighbor/).
+
+**2**:
+
+Limit or exclude devices from TUN routing by MAC address.
+Only supported on Linux with `auto_route` and `auto_redirect` enabled.
+
+See [TUN](/configuration/inbound/tun/#include_mac_address).
+
+**3**:
+
+This is not an official update from NaiveProxy. Instead, it's a Chromium codebase update maintained by Project S.
+
 #### 1.13.2
 
 * Fixes and improvements

docs/configuration/dns/rule.md

@@ -2,6 +2,11 @@
 icon: material/alert-decagram
 ---
 
+!!! quote "Changes in sing-box 1.14.0"
+
+    :material-plus: [source_mac_address](#source_mac_address)  
+    :material-plus: [source_hostname](#source_hostname)
+
 !!! quote "Changes in sing-box 1.13.0"
 
     :material-plus: [interface_address](#interface_address)  
@@ -149,6 +154,12 @@ icon: material/alert-decagram
         "default_interface_address": [
           "2000::/3"
         ],
+        "source_mac_address": [
+          "00:11:22:33:44:55"
+        ],
+        "source_hostname": [
+          "my-device"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
@@ -408,6 +419,26 @@ Matches network interface (same values as `network_type`) address.
 
 Match default interface address.
 
+#### source_mac_address
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup.
+
+Match source device MAC address.
+
+#### source_hostname
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup.
+
+Match source device hostname from DHCP leases.
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/dns/rule.zh.md

@@ -2,6 +2,11 @@
 icon: material/alert-decagram
 ---
 
+!!! quote "sing-box 1.14.0 中的更改"
+
+    :material-plus: [source_mac_address](#source_mac_address)  
+    :material-plus: [source_hostname](#source_hostname)
+
 !!! quote "sing-box 1.13.0 中的更改"
 
     :material-plus: [interface_address](#interface_address)  
@@ -149,6 +154,12 @@ icon: material/alert-decagram
         "default_interface_address": [
           "2000::/3"
         ],
+        "source_mac_address": [
+          "00:11:22:33:44:55"
+        ],
+        "source_hostname": [
+          "my-device"
+        ],
         "wifi_ssid": [
           "My WIFI"
         ],
@@ -407,6 +418,26 @@ Available values: `wifi`, `cellular`, `ethernet` and `other`.
 
 匹配默认接口地址。
 
+#### source_mac_address
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。
+
+匹配源设备 MAC 地址。
+
+#### source_hostname
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。
+
+匹配源设备从 DHCP 租约获取的主机名。
+
 #### wifi_ssid
 
 !!! quote ""

docs/configuration/inbound/tun.md

@@ -134,6 +134,12 @@ icon: material/new-box
   "exclude_package": [
     "com.android.captiveportallogin"
   ],
+  "include_mac_address": [
+    "00:11:22:33:44:55"
+  ],
+  "exclude_mac_address": [
+    "66:77:88:99:aa:bb"
+  ],
   "platform": {
     "http_proxy": {
       "enabled": false,
@@ -560,6 +566,30 @@ Limit android packages in route.
 
 Exclude android packages in route.
 
+#### include_mac_address
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux with `auto_route` and `auto_redirect` enabled.
+
+Limit MAC addresses in route. Not limited by default.
+
+Conflict with `exclude_mac_address`.
+
+#### exclude_mac_address
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux with `auto_route` and `auto_redirect` enabled.
+
+Exclude MAC addresses in route.
+
+Conflict with `include_mac_address`.
+
 #### platform
 
 Platform-specific settings, provided by client applications.

docs/configuration/inbound/tun.zh.md

@@ -2,6 +2,11 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.14.0 中的更改"
+
+    :material-plus: [include_mac_address](#include_mac_address)  
+    :material-plus: [exclude_mac_address](#exclude_mac_address)
+
 !!! quote "sing-box 1.13.3 中的更改"
 
     :material-alert: [strict_route](#strict_route)
@@ -130,6 +135,12 @@ icon: material/new-box
   "exclude_package": [
     "com.android.captiveportallogin"
   ],
+  "include_mac_address": [
+    "00:11:22:33:44:55"
+  ],
+  "exclude_mac_address": [
+    "66:77:88:99:aa:bb"
+  ],
   "platform": {
     "http_proxy": {
       "enabled": false,
@@ -543,6 +554,30 @@ TCP/IP 栈。
 
 排除路由的 Android 应用包名。
 
+#### include_mac_address
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux，且需要 `auto_route` 和 `auto_redirect` 已启用。
+
+限制被路由的 MAC 地址。默认不限制。
+
+与 `exclude_mac_address` 冲突。
+
+#### exclude_mac_address
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux，且需要 `auto_route` 和 `auto_redirect` 已启用。
+
+排除路由的 MAC 地址。
+
+与 `include_mac_address` 冲突。
+
 #### platform
 
 平台特定的设置，由客户端应用提供。

docs/configuration/route/index.md

@@ -4,6 +4,11 @@ icon: material/alert-decagram
 
 # Route
 
+!!! quote "Changes in sing-box 1.14.0"
+
+    :material-plus: [find_neighbor](#find_neighbor)  
+    :material-plus: [dhcp_lease_files](#dhcp_lease_files)
+
 !!! quote "Changes in sing-box 1.12.0"
 
     :material-plus: [default_domain_resolver](#default_domain_resolver)  
@@ -35,6 +40,9 @@ icon: material/alert-decagram
     "override_android_vpn": false,
     "default_interface": "",
     "default_mark": 0,
+    "find_process": false,
+    "find_neighbor": false,
+    "dhcp_lease_files": [],
     "default_domain_resolver": "", // or {}
     "default_network_strategy": "",
     "default_network_type": [],
@@ -107,6 +115,38 @@ Set routing mark by default.
 
 Takes no effect if `outbound.routing_mark` is set.
 
+#### find_process
+
+!!! quote ""
+
+    Only supported on Linux, Windows, and macOS.
+
+Enable process search for logging when no `process_name`, `process_path`, `package_name`, `user` or `user_id` rules exist.
+
+#### find_neighbor
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux and macOS.
+
+Enable neighbor resolution for logging when no `source_mac_address` or `source_hostname` rules exist.
+
+See [Neighbor Resolution](/configuration/shared/neighbor/) for setup.
+
+#### dhcp_lease_files
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux and macOS.
+
+Custom DHCP lease file paths for hostname and MAC address resolution.
+
+Automatically detected from common DHCP servers (dnsmasq, odhcpd, ISC dhcpd, Kea) if empty.
+
 #### default_domain_resolver
 
 !!! question "Since sing-box 1.12.0"

docs/configuration/route/index.zh.md

@@ -4,6 +4,11 @@ icon: material/alert-decagram
 
 # 路由
 
+!!! quote "sing-box 1.14.0 中的更改"
+
+    :material-plus: [find_neighbor](#find_neighbor)  
+    :material-plus: [dhcp_lease_files](#dhcp_lease_files)
+
 !!! quote "sing-box 1.12.0 中的更改"
 
     :material-plus: [default_domain_resolver](#default_domain_resolver)  
@@ -37,6 +42,9 @@ icon: material/alert-decagram
     "override_android_vpn": false,
     "default_interface": "",
     "default_mark": 0,
+    "find_process": false,
+    "find_neighbor": false,
+    "dhcp_lease_files": [],
     "default_network_strategy": "",
     "default_fallback_delay": ""
   }
@@ -106,6 +114,38 @@ icon: material/alert-decagram
 
 如果设置了 `outbound.routing_mark` 设置，则不生效。
 
+#### find_process
+
+!!! quote ""
+
+    仅支持 Linux、Windows 和 macOS。
+
+在没有 `process_name`、`process_path`、`package_name`、`user` 或 `user_id` 规则时启用进程搜索以输出日志。
+
+#### find_neighbor
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux 和 macOS。
+
+在没有 `source_mac_address` 或 `source_hostname` 规则时启用邻居解析以输出日志。
+
+参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。
+
+#### dhcp_lease_files
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux 和 macOS。
+
+用于主机名和 MAC 地址解析的自定义 DHCP 租约文件路径。
+
+为空时自动从常见 DHCP 服务器（dnsmasq、odhcpd、ISC dhcpd、Kea）检测。
+
 #### default_domain_resolver
 
 !!! question "自 sing-box 1.12.0 起"

docs/configuration/route/rule.md

@@ -2,6 +2,11 @@
 icon: material/new-box
 ---
 
+!!! quote "Changes in sing-box 1.14.0"
+
+    :material-plus: [source_mac_address](#source_mac_address)  
+    :material-plus: [source_hostname](#source_hostname)
+
 !!! quote "Changes in sing-box 1.13.0"
 
     :material-plus: [interface_address](#interface_address)  
@@ -159,6 +164,12 @@ icon: material/new-box
           "tailscale",
           "wireguard"
         ],
+        "source_mac_address": [
+          "00:11:22:33:44:55"
+        ],
+        "source_hostname": [
+          "my-device"
+        ],
         "rule_set": [
           "geoip-cn",
           "geosite-cn"
@@ -449,6 +460,26 @@ Match specified outbounds' preferred routes.
 | `tailscale` | Match MagicDNS domains and peers' allowed IPs |
 | `wireguard` | Match peers's allowed IPs                     |
 
+#### source_mac_address
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup.
+
+Match source device MAC address.
+
+#### source_hostname
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux, macOS, or in graphical clients on Android and macOS. See [Neighbor Resolution](/configuration/shared/neighbor/) for setup.
+
+Match source device hostname from DHCP leases.
+
 #### rule_set
 
 !!! question "Since sing-box 1.8.0"

docs/configuration/route/rule.zh.md

@@ -2,6 +2,11 @@
 icon: material/new-box
 ---
 
+!!! quote "sing-box 1.14.0 中的更改"
+
+    :material-plus: [source_mac_address](#source_mac_address)  
+    :material-plus: [source_hostname](#source_hostname)
+
 !!! quote "sing-box 1.13.0 中的更改"
 
     :material-plus: [interface_address](#interface_address)  
@@ -157,6 +162,12 @@ icon: material/new-box
           "tailscale",
           "wireguard"
         ],
+        "source_mac_address": [
+          "00:11:22:33:44:55"
+        ],
+        "source_hostname": [
+          "my-device"
+        ],
         "rule_set": [
           "geoip-cn",
           "geosite-cn"
@@ -447,6 +458,26 @@ icon: material/new-box
 | `tailscale` | 匹配 MagicDNS 域名和对端的 allowed IPs |
 | `wireguard` | 匹配对端的 allowed IPs              |
 
+#### source_mac_address
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。
+
+匹配源设备 MAC 地址。
+
+#### source_hostname
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux、macOS，或在 Android 和 macOS 图形客户端中支持。参阅 [邻居解析](/configuration/shared/neighbor/) 了解设置方法。
+
+匹配源设备从 DHCP 租约获取的主机名。
+
 #### rule_set
 
 !!! question "自 sing-box 1.8.0 起"

docs/configuration/shared/neighbor.md

@@ -0,0 +1,49 @@
+---
+icon: material/lan
+---
+
+# Neighbor Resolution
+
+Match LAN devices by MAC address and hostname using
+[`source_mac_address`](/configuration/route/rule/#source_mac_address) and
+[`source_hostname`](/configuration/route/rule/#source_hostname) rule items.
+
+Neighbor resolution is automatically enabled when these rule items exist.
+Use [`route.find_neighbor`](/configuration/route/#find_neighbor) to force enable it for logging without rules.
+
+## Linux
+
+Works natively. No special setup required.
+
+Hostname resolution requires DHCP lease files,
+automatically detected from common DHCP servers (dnsmasq, odhcpd, ISC dhcpd, Kea).
+Custom paths can be set via [`route.dhcp_lease_files`](/configuration/route/#dhcp_lease_files).
+
+## Android
+
+!!! quote ""
+
+    Only supported in graphical clients.
+
+Requires Android 11 or above and ROOT.
+
+Must use [VPNHotspot](https://github.com/Mygod/VPNHotspot) to share the VPN connection.
+ROM built-in features like "Use VPN for connected devices" can share VPN
+but cannot provide MAC address or hostname information.
+
+Set **IP Masquerade Mode** to **None** in VPNHotspot settings.
+
+Only route/DNS rules are supported. TUN include/exclude routes are not supported.
+
+### Hostname Visibility
+
+Hostname is only visible in sing-box if it is visible in VPNHotspot.
+For Apple devices, change **Private Wi-Fi Address** from **Rotating** to **Fixed** in the Wi-Fi settings
+of the connected network. Non-Apple devices are always visible.
+
+## macOS
+
+Requires the standalone version (macOS system extension).
+The App Store version can share the VPN as a hotspot but does not support MAC address or hostname reading.
+
+See [VPN Hotspot](/manual/misc/vpn-hotspot/#macos) for Internet Sharing setup.

docs/configuration/shared/neighbor.zh.md

@@ -0,0 +1,49 @@
+---
+icon: material/lan
+---
+
+# 邻居解析
+
+通过
+[`source_mac_address`](/configuration/route/rule/#source_mac_address) 和
+[`source_hostname`](/configuration/route/rule/#source_hostname) 规则项匹配局域网设备的 MAC 地址和主机名。
+
+当这些规则项存在时，邻居解析自动启用。
+使用 [`route.find_neighbor`](/configuration/route/#find_neighbor) 可在没有规则时强制启用以输出日志。
+
+## Linux
+
+原生支持，无需特殊设置。
+
+主机名解析需要 DHCP 租约文件，
+自动从常见 DHCP 服务器（dnsmasq、odhcpd、ISC dhcpd、Kea）检测。
+可通过 [`route.dhcp_lease_files`](/configuration/route/#dhcp_lease_files) 设置自定义路径。
+
+## Android
+
+!!! quote ""
+
+    仅在图形客户端中支持。
+
+需要 Android 11 或以上版本和 ROOT。
+
+必须使用 [VPNHotspot](https://github.com/Mygod/VPNHotspot) 共享 VPN 连接。
+ROM 自带的「通过 VPN 共享连接」等功能可以共享 VPN，
+但无法提供 MAC 地址或主机名信息。
+
+在 VPNHotspot 设置中将 **IP 遮掩模式** 设为 **无**。
+
+仅支持路由/DNS 规则。不支持 TUN 的 include/exclude 路由。
+
+### 设备可见性
+
+MAC 地址和主机名仅在 VPNHotspot 中可见时 sing-box 才能读取。
+对于 Apple 设备，需要在所连接网络的 Wi-Fi 设置中将**私有无线局域网地址**从**轮替**改为**固定**。
+非 Apple 设备始终可见。
+
+## macOS
+
+需要独立版本（macOS 系统扩展）。
+App Store 版本可以共享 VPN 热点但不支持 MAC 地址或主机名读取。
+
+参阅 [VPN 热点](/manual/misc/vpn-hotspot/#macos) 了解互联网共享设置。

experimental/clashapi/trafficontrol/tracker.go

@@ -45,8 +45,8 @@ func (t TrackerMetadata) MarshalJSON() ([]byte, error) {
 	if t.Metadata.ProcessInfo != nil {
 		if t.Metadata.ProcessInfo.ProcessPath != "" {
 			processPath = t.Metadata.ProcessInfo.ProcessPath
-		} else if t.Metadata.ProcessInfo.AndroidPackageName != "" {
-			processPath = t.Metadata.ProcessInfo.AndroidPackageName
+		} else if len(t.Metadata.ProcessInfo.AndroidPackageNames) > 0 {
+			processPath = t.Metadata.ProcessInfo.AndroidPackageNames[0]
 		}
 		if processPath == "" {
 			if t.Metadata.ProcessInfo.UserId != -1 {

experimental/libbox/command_types.go

@@ -239,11 +239,15 @@ func (c *Connections) Iterator() ConnectionIterator {
 }
 
 type ProcessInfo struct {
-	ProcessID   int64
-	UserID      int32
-	UserName    string
-	ProcessPath string
-	PackageName string
+	ProcessID    int64
+	UserID       int32
+	UserName     string
+	ProcessPath  string
+	packageNames []string
+}
+
+func (p *ProcessInfo) PackageNames() StringIterator {
+	return newIterator(p.packageNames)
 }
 
 type Connection struct {
@@ -339,11 +343,11 @@ func connectionFromGRPC(conn *daemon.Connection) Connection {
 	var processInfo *ProcessInfo
 	if conn.ProcessInfo != nil {
 		processInfo = &ProcessInfo{
-			ProcessID:   int64(conn.ProcessInfo.ProcessId),
-			UserID:      conn.ProcessInfo.UserId,
-			UserName:    conn.ProcessInfo.UserName,
-			ProcessPath: conn.ProcessInfo.ProcessPath,
-			PackageName: conn.ProcessInfo.PackageName,
+			ProcessID:    int64(conn.ProcessInfo.ProcessId),
+			UserID:       conn.ProcessInfo.UserId,
+			UserName:     conn.ProcessInfo.UserName,
+			ProcessPath:  conn.ProcessInfo.ProcessPath,
+			packageNames: conn.ProcessInfo.PackageNames,
 		}
 	}
 	return Connection{

experimental/libbox/config.go

@@ -144,6 +144,18 @@ func (s *platformInterfaceStub) SendNotification(notification *adapter.Notificat
 	return nil
 }
 
+func (s *platformInterfaceStub) UsePlatformNeighborResolver() bool {
+	return false
+}
+
+func (s *platformInterfaceStub) StartNeighborMonitor(listener adapter.NeighborUpdateListener) error {
+	return os.ErrInvalid
+}
+
+func (s *platformInterfaceStub) CloseNeighborMonitor(listener adapter.NeighborUpdateListener) error {
+	return nil
+}
+
 func (s *platformInterfaceStub) UsePlatformLocalDNSTransport() bool {
 	return false
 }

experimental/libbox/connection_owner_darwin.go

@@ -0,0 +1,57 @@
+package libbox
+
+import (
+	"net/netip"
+	"os/user"
+	"syscall"
+
+	"github.com/sagernet/sing-box/common/process"
+	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
+)
+
+func FindConnectionOwner(ipProtocol int32, sourceAddress string, sourcePort int32, destinationAddress string, destinationPort int32) (*ConnectionOwner, error) {
+	source, err := parseConnectionOwnerAddrPort(sourceAddress, sourcePort)
+	if err != nil {
+		return nil, E.Cause(err, "parse source")
+	}
+	destination, err := parseConnectionOwnerAddrPort(destinationAddress, destinationPort)
+	if err != nil {
+		return nil, E.Cause(err, "parse destination")
+	}
+	var network string
+	switch ipProtocol {
+	case syscall.IPPROTO_TCP:
+		network = "tcp"
+	case syscall.IPPROTO_UDP:
+		network = "udp"
+	default:
+		return nil, E.New("unknown protocol: ", ipProtocol)
+	}
+	owner, err := process.FindDarwinConnectionOwner(network, source, destination)
+	if err != nil {
+		return nil, err
+	}
+	result := &ConnectionOwner{
+		UserId:      owner.UserId,
+		ProcessPath: owner.ProcessPath,
+	}
+	if owner.UserId != -1 && owner.UserName == "" {
+		osUser, _ := user.LookupId(F.ToString(owner.UserId))
+		if osUser != nil {
+			result.UserName = osUser.Username
+		}
+	}
+	return result, nil
+}
+
+func parseConnectionOwnerAddrPort(address string, port int32) (netip.AddrPort, error) {
+	if port < 0 || port > 65535 {
+		return netip.AddrPort{}, E.New("invalid port: ", port)
+	}
+	addr, err := netip.ParseAddr(address)
+	if err != nil {
+		return netip.AddrPort{}, err
+	}
+	return netip.AddrPortFrom(addr.Unmap(), uint16(port)), nil
+}

experimental/libbox/neighbor.go

@@ -0,0 +1,53 @@
+package libbox
+
+import (
+	"net"
+	"net/netip"
+)
+
+type NeighborEntry struct {
+	Address    string
+	MacAddress string
+	Hostname   string
+}
+
+type NeighborEntryIterator interface {
+	Next() *NeighborEntry
+	HasNext() bool
+}
+
+type NeighborSubscription struct {
+	done chan struct{}
+}
+
+func (s *NeighborSubscription) Close() {
+	close(s.done)
+}
+
+func tableToIterator(table map[netip.Addr]net.HardwareAddr) NeighborEntryIterator {
+	entries := make([]*NeighborEntry, 0, len(table))
+	for address, mac := range table {
+		entries = append(entries, &NeighborEntry{
+			Address:    address.String(),
+			MacAddress: mac.String(),
+		})
+	}
+	return &neighborEntryIterator{entries}
+}
+
+type neighborEntryIterator struct {
+	entries []*NeighborEntry
+}
+
+func (i *neighborEntryIterator) HasNext() bool {
+	return len(i.entries) > 0
+}
+
+func (i *neighborEntryIterator) Next() *NeighborEntry {
+	if len(i.entries) == 0 {
+		return nil
+	}
+	entry := i.entries[0]
+	i.entries = i.entries[1:]
+	return entry
+}

experimental/libbox/neighbor_darwin.go

@@ -0,0 +1,123 @@
+//go:build darwin
+
+package libbox
+
+import (
+	"net"
+	"net/netip"
+	"os"
+	"slices"
+	"time"
+
+	"github.com/sagernet/sing-box/route"
+	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	xroute "golang.org/x/net/route"
+	"golang.org/x/sys/unix"
+)
+
+func SubscribeNeighborTable(listener NeighborUpdateListener) (*NeighborSubscription, error) {
+	entries, err := route.ReadNeighborEntries()
+	if err != nil {
+		return nil, E.Cause(err, "initial neighbor dump")
+	}
+	table := make(map[netip.Addr]net.HardwareAddr)
+	for _, entry := range entries {
+		table[entry.Address] = entry.MACAddress
+	}
+	listener.UpdateNeighborTable(tableToIterator(table))
+	routeSocket, err := unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, 0)
+	if err != nil {
+		return nil, E.Cause(err, "open route socket")
+	}
+	err = unix.SetNonblock(routeSocket, true)
+	if err != nil {
+		unix.Close(routeSocket)
+		return nil, E.Cause(err, "set route socket nonblock")
+	}
+	subscription := &NeighborSubscription{
+		done: make(chan struct{}),
+	}
+	go subscription.loop(listener, routeSocket, table)
+	return subscription, nil
+}
+
+func (s *NeighborSubscription) loop(listener NeighborUpdateListener, routeSocket int, table map[netip.Addr]net.HardwareAddr) {
+	routeSocketFile := os.NewFile(uintptr(routeSocket), "route")
+	defer routeSocketFile.Close()
+	buffer := buf.NewPacket()
+	defer buffer.Release()
+	for {
+		select {
+		case <-s.done:
+			return
+		default:
+		}
+		tv := unix.NsecToTimeval(int64(3 * time.Second))
+		_ = unix.SetsockoptTimeval(routeSocket, unix.SOL_SOCKET, unix.SO_RCVTIMEO, &tv)
+		n, err := routeSocketFile.Read(buffer.FreeBytes())
+		if err != nil {
+			if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
+				continue
+			}
+			select {
+			case <-s.done:
+				return
+			default:
+			}
+			continue
+		}
+		messages, err := xroute.ParseRIB(xroute.RIBTypeRoute, buffer.FreeBytes()[:n])
+		if err != nil {
+			continue
+		}
+		changed := false
+		for _, message := range messages {
+			routeMessage, isRouteMessage := message.(*xroute.RouteMessage)
+			if !isRouteMessage {
+				continue
+			}
+			if routeMessage.Flags&unix.RTF_LLINFO == 0 {
+				continue
+			}
+			address, mac, isDelete, ok := route.ParseRouteNeighborMessage(routeMessage)
+			if !ok {
+				continue
+			}
+			if isDelete {
+				if _, exists := table[address]; exists {
+					delete(table, address)
+					changed = true
+				}
+			} else {
+				existing, exists := table[address]
+				if !exists || !slices.Equal(existing, mac) {
+					table[address] = mac
+					changed = true
+				}
+			}
+		}
+		if changed {
+			listener.UpdateNeighborTable(tableToIterator(table))
+		}
+	}
+}
+
+func ReadBootpdLeases() NeighborEntryIterator {
+	leaseIPToMAC, ipToHostname, macToHostname := route.ReloadLeaseFiles([]string{"/var/db/dhcpd_leases"})
+	entries := make([]*NeighborEntry, 0, len(leaseIPToMAC))
+	for address, mac := range leaseIPToMAC {
+		entry := &NeighborEntry{
+			Address:    address.String(),
+			MacAddress: mac.String(),
+		}
+		hostname, found := ipToHostname[address]
+		if !found {
+			hostname = macToHostname[mac.String()]
+		}
+		entry.Hostname = hostname
+		entries = append(entries, entry)
+	}
+	return &neighborEntryIterator{entries}
+}

experimental/libbox/neighbor_linux.go

@@ -0,0 +1,88 @@
+//go:build linux
+
+package libbox
+
+import (
+	"net"
+	"net/netip"
+	"slices"
+	"time"
+
+	"github.com/sagernet/sing-box/route"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+func SubscribeNeighborTable(listener NeighborUpdateListener) (*NeighborSubscription, error) {
+	entries, err := route.ReadNeighborEntries()
+	if err != nil {
+		return nil, E.Cause(err, "initial neighbor dump")
+	}
+	table := make(map[netip.Addr]net.HardwareAddr)
+	for _, entry := range entries {
+		table[entry.Address] = entry.MACAddress
+	}
+	listener.UpdateNeighborTable(tableToIterator(table))
+	connection, err := netlink.Dial(unix.NETLINK_ROUTE, &netlink.Config{
+		Groups: 1 << (unix.RTNLGRP_NEIGH - 1),
+	})
+	if err != nil {
+		return nil, E.Cause(err, "subscribe neighbor updates")
+	}
+	subscription := &NeighborSubscription{
+		done: make(chan struct{}),
+	}
+	go subscription.loop(listener, connection, table)
+	return subscription, nil
+}
+
+func (s *NeighborSubscription) loop(listener NeighborUpdateListener, connection *netlink.Conn, table map[netip.Addr]net.HardwareAddr) {
+	defer connection.Close()
+	for {
+		select {
+		case <-s.done:
+			return
+		default:
+		}
+		err := connection.SetReadDeadline(time.Now().Add(3 * time.Second))
+		if err != nil {
+			return
+		}
+		messages, err := connection.Receive()
+		if err != nil {
+			if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
+				continue
+			}
+			select {
+			case <-s.done:
+				return
+			default:
+			}
+			continue
+		}
+		changed := false
+		for _, message := range messages {
+			address, mac, isDelete, ok := route.ParseNeighborMessage(message)
+			if !ok {
+				continue
+			}
+			if isDelete {
+				if _, exists := table[address]; exists {
+					delete(table, address)
+					changed = true
+				}
+			} else {
+				existing, exists := table[address]
+				if !exists || !slices.Equal(existing, mac) {
+					table[address] = mac
+					changed = true
+				}
+			}
+		}
+		if changed {
+			listener.UpdateNeighborTable(tableToIterator(table))
+		}
+	}
+}

experimental/libbox/neighbor_stub.go

@@ -0,0 +1,9 @@
+//go:build !linux && !darwin
+
+package libbox
+
+import "os"
+
+func SubscribeNeighborTable(_ NeighborUpdateListener) (*NeighborSubscription, error) {
+	return nil, os.ErrInvalid
+}

experimental/libbox/platform.go

@@ -21,13 +21,28 @@ type PlatformInterface interface {
 	SystemCertificates() StringIterator
 	ClearDNSCache()
 	SendNotification(notification *Notification) error
+	StartNeighborMonitor(listener NeighborUpdateListener) error
+	CloseNeighborMonitor(listener NeighborUpdateListener) error
+	RegisterMyInterface(name string)
+}
+
+type NeighborUpdateListener interface {
+	UpdateNeighborTable(entries NeighborEntryIterator)
 }
 
 type ConnectionOwner struct {
-	UserId             int32
-	UserName           string
-	ProcessPath        string
-	AndroidPackageName string
+	UserId              int32
+	UserName            string
+	ProcessPath         string
+	androidPackageNames []string
+}
+
+func (c *ConnectionOwner) SetAndroidPackageNames(names StringIterator) {
+	c.androidPackageNames = iteratorToArray[string](names)
+}
+
+func (c *ConnectionOwner) AndroidPackageNames() StringIterator {
+	return newIterator(c.androidPackageNames)
 }
 
 type InterfaceUpdateListener interface {

experimental/libbox/service.go

@@ -78,6 +78,7 @@ func (w *platformInterfaceWrapper) OpenInterface(options *tun.Options, platformO
 	}
 	options.FileDescriptor = dupFd
 	w.myTunName = options.Name
+	w.iif.RegisterMyInterface(options.Name)
 	return tun.New(*options)
 }
 
@@ -201,10 +202,10 @@ func (w *platformInterfaceWrapper) FindConnectionOwner(request *adapter.FindConn
 		return nil, err
 	}
 	return &adapter.ConnectionOwner{
-		UserId:             result.UserId,
-		UserName:           result.UserName,
-		ProcessPath:        result.ProcessPath,
-		AndroidPackageName: result.AndroidPackageName,
+		UserId:              result.UserId,
+		UserName:            result.UserName,
+		ProcessPath:         result.ProcessPath,
+		AndroidPackageNames: result.androidPackageNames,
 	}, nil
 }
 
@@ -220,6 +221,46 @@ func (w *platformInterfaceWrapper) SendNotification(notification *adapter.Notifi
 	return w.iif.SendNotification((*Notification)(notification))
 }
 
+func (w *platformInterfaceWrapper) UsePlatformNeighborResolver() bool {
+	return true
+}
+
+func (w *platformInterfaceWrapper) StartNeighborMonitor(listener adapter.NeighborUpdateListener) error {
+	return w.iif.StartNeighborMonitor(&neighborUpdateListenerWrapper{listener: listener})
+}
+
+func (w *platformInterfaceWrapper) CloseNeighborMonitor(listener adapter.NeighborUpdateListener) error {
+	return w.iif.CloseNeighborMonitor(nil)
+}
+
+type neighborUpdateListenerWrapper struct {
+	listener adapter.NeighborUpdateListener
+}
+
+func (w *neighborUpdateListenerWrapper) UpdateNeighborTable(entries NeighborEntryIterator) {
+	var result []adapter.NeighborEntry
+	for entries.HasNext() {
+		entry := entries.Next()
+		if entry == nil {
+			continue
+		}
+		address, err := netip.ParseAddr(entry.Address)
+		if err != nil {
+			continue
+		}
+		macAddress, err := net.ParseMAC(entry.MacAddress)
+		if err != nil {
+			continue
+		}
+		result = append(result, adapter.NeighborEntry{
+			Address:    address,
+			MACAddress: macAddress,
+			Hostname:   entry.Hostname,
+		})
+	}
+	w.listener.UpdateNeighborTable(result)
+}
+
 func AvailablePort(startPort int32) (int32, error) {
 	for port := int(startPort); ; port++ {
 		if port > 65535 {

go.mod

@@ -14,11 +14,13 @@ require (
 	github.com/godbus/dbus/v5 v5.2.2
 	github.com/gofrs/uuid/v5 v5.4.0
 	github.com/insomniacslk/dhcp v0.0.0-20260220084031-5adc3eb26f91
+	github.com/jsimonetti/rtnetlink v1.4.0
 	github.com/keybase/go-keychain v0.0.1
 	github.com/libdns/acmedns v0.5.0
 	github.com/libdns/alidns v1.0.6
 	github.com/libdns/cloudflare v0.2.2
 	github.com/logrusorgru/aurora v2.0.3+incompatible
+	github.com/mdlayher/netlink v1.9.0
 	github.com/metacubex/utls v1.8.4
 	github.com/mholt/acmez/v3 v3.1.6
 	github.com/miekg/dns v1.1.72
@@ -27,8 +29,8 @@ require (
 	github.com/sagernet/asc-go v0.0.0-20241217030726-d563060fe4e1
 	github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a
 	github.com/sagernet/cors v1.2.1
-	github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9
-	github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9
+	github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc
+	github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc
 	github.com/sagernet/fswatch v0.1.1
 	github.com/sagernet/gomobile v0.1.12
 	github.com/sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1
@@ -39,10 +41,10 @@ require (
 	github.com/sagernet/sing-shadowsocks v0.2.8
 	github.com/sagernet/sing-shadowsocks2 v0.2.1
 	github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11
-	github.com/sagernet/sing-tun v0.8.3
+	github.com/sagernet/sing-tun v0.8.7-0.20260323120017-8eb4e8acfc2d
 	github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1
 	github.com/sagernet/smux v1.5.50-sing-box-mod.1
-	github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.6.0.20260311131347-f88b27eeb76e
+	github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.7
 	github.com/sagernet/wireguard-go v0.0.2-beta.1.0.20260224074747-506b7631853c
 	github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854
 	github.com/spf13/cobra v1.10.2
@@ -92,11 +94,9 @@ require (
 	github.com/hashicorp/yamux v0.1.2 // indirect
 	github.com/hdevalence/ed25519consensus v0.2.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/jsimonetti/rtnetlink v1.4.0 // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/libdns/libdns v1.1.1 // indirect
-	github.com/mdlayher/netlink v1.9.0 // indirect
 	github.com/mdlayher/socket v0.5.1 // indirect
 	github.com/mitchellh/go-ps v1.0.0 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect

go.sum

@@ -162,10 +162,10 @@ github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a h1:+NkI2670SQpQWvkk
 github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a/go.mod h1:63s7jpZqcDAIpj8oI/1v4Izok+npJOHACFCU6+huCkM=
 github.com/sagernet/cors v1.2.1 h1:Cv5Z8y9YSD6Gm+qSpNrL3LO4lD3eQVvbFYJSG7JCMHQ=
 github.com/sagernet/cors v1.2.1/go.mod h1:O64VyOjjhrkLmQIjF4KGRrJO/5dVXFdpEmCW/eISRAI=
-github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9 h1:xq5Yr10jXEppD3cnGjE3WENaB6D0YsZu6KptZ8d3054=
-github.com/sagernet/cronet-go v0.0.0-20260309102448-2fef65f9dba9/go.mod h1:hwFHBEjjthyEquDULbr4c4ucMedp8Drb6Jvm2kt/0Bw=
-github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9 h1:uxQyy6Y/boOuecVA66tf79JgtoRGfeDJcfYZZLKVA5E=
-github.com/sagernet/cronet-go/all v0.0.0-20260309102448-2fef65f9dba9/go.mod h1:Xm6cCvs0/twozC1JYNq0sVlOVmcSGzV7YON1XGcD97w=
+github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc h1:YK7PwJT0irRAEui9ASdXSxcE2BOVQipWMF/A1Ogt+7c=
+github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc/go.mod h1:hwFHBEjjthyEquDULbr4c4ucMedp8Drb6Jvm2kt/0Bw=
+github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc h1:EJPHOqk23IuBsTjXK9OXqkNxPbKOBWKRmviQoCcriAs=
+github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc/go.mod h1:8aty0RW96DrJSMWXO6bRPMBJEjuqq5JWiOIi4bCRzFA=
 github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260309101654-0cbdcfddded9 h1:Qi0IKBpoPP3qZqIXuOKMsT2dv+l/MLWMyBHDMLRw2EA=
 github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260309101654-0cbdcfddded9/go.mod h1:XXDwdjX/T8xftoeJxQmbBoYXZp8MAPFR2CwbFuTpEtw=
 github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260309101654-0cbdcfddded9 h1:p+wCMjOhj46SpSD/AJeTGgkCcbyA76FyH631XZatyU8=
@@ -248,14 +248,14 @@ github.com/sagernet/sing-shadowsocks2 v0.2.1 h1:dWV9OXCeFPuYGHb6IRqlSptVnSzOelnq
 github.com/sagernet/sing-shadowsocks2 v0.2.1/go.mod h1:RnXS0lExcDAovvDeniJ4IKa2IuChrdipolPYWBv9hWQ=
 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 h1:tK+75l64tm9WvEFrYRE1t0YxoFdWQqw/h7Uhzj0vJ+w=
 github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11/go.mod h1:sWqKnGlMipCHaGsw1sTTlimyUpgzP4WP3pjhCsYt9oA=
-github.com/sagernet/sing-tun v0.8.3 h1:mozxmuIoRhFdVHnheenLpBaammVj7bZPcnkApaYKDPY=
-github.com/sagernet/sing-tun v0.8.3/go.mod h1:pLCo4o+LacXEzz0bhwhJkKBjLlKOGPBNOAZ97ZVZWzs=
+github.com/sagernet/sing-tun v0.8.7-0.20260323120017-8eb4e8acfc2d h1:vi0j6301f6H8t2GYgAC2PA2AdnGdMwkP34B4+N03Qt4=
+github.com/sagernet/sing-tun v0.8.7-0.20260323120017-8eb4e8acfc2d/go.mod h1:pLCo4o+LacXEzz0bhwhJkKBjLlKOGPBNOAZ97ZVZWzs=
 github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1 h1:aSwUNYUkVyVvdmBSufR8/nRFonwJeKSIROxHcm5br9o=
 github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1/go.mod h1:P11scgTxMxVVQ8dlM27yNm3Cro40mD0+gHbnqrNGDuY=
 github.com/sagernet/smux v1.5.50-sing-box-mod.1 h1:XkJcivBC9V4wBjiGXIXZ229aZCU1hzcbp6kSkkyQ478=
 github.com/sagernet/smux v1.5.50-sing-box-mod.1/go.mod h1:NjhsCEWedJm7eFLyhuBgIEzwfhRmytrUoiLluxs5Sk8=
-github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.6.0.20260311131347-f88b27eeb76e h1:Sv1qUhJIidjSTc24XEknovDZnbmVSlAXj8wNVgIfgGo=
-github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.6.0.20260311131347-f88b27eeb76e/go.mod h1:m87GAn4UcesHQF3leaPFEINZETO5za1LGn1GJdNDgNc=
+github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.7 h1:8zc1Aph1+ElqF9/7aSPkO0o4vTd+AfQC+CO324mLWGg=
+github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.7/go.mod h1:m87GAn4UcesHQF3leaPFEINZETO5za1LGn1GJdNDgNc=
 github.com/sagernet/wireguard-go v0.0.2-beta.1.0.20260224074747-506b7631853c h1:f9cXNB+IOOPnR8DOLMTpr42jf7naxh5Un5Y09BBf5Cg=
 github.com/sagernet/wireguard-go v0.0.2-beta.1.0.20260224074747-506b7631853c/go.mod h1:WUxgxUDZoCF2sxVmW+STSxatP02Qn3FcafTiI2BLtE0=
 github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854 h1:6uUiZcDRnZSAegryaUGwPC/Fj13JSHwiTftrXhMmYOc=

mkdocs.yml

@@ -129,6 +129,7 @@ nav:
           - UDP over TCP: configuration/shared/udp-over-tcp.md
           - TCP Brutal: configuration/shared/tcp-brutal.md
           - Wi-Fi State: configuration/shared/wifi-state.md
+          - Neighbor Resolution: configuration/shared/neighbor.md
       - Endpoint:
           - configuration/endpoint/index.md
           - WireGuard: configuration/endpoint/wireguard.md

option/inbound.go

@@ -44,6 +44,12 @@ func (h *Inbound) UnmarshalJSONContext(ctx context.Context, content []byte) erro
 	if err != nil {
 		return err
 	}
+	if listenWrapper, isListen := options.(ListenOptionsWrapper); isListen {
+		//nolint:staticcheck
+		if listenWrapper.TakeListenOptions().InboundOptions != (InboundOptions{}) {
+			return E.New("legacy inbound fields are deprecated in sing-box 1.11.0 and removed in sing-box 1.13.0, checkout migration: https://sing-box.sagernet.org/migration/#migrate-legacy-inbound-fields-to-rule-actions")
+		}
+	}
 	h.Options = options
 	return nil
 }

option/route.go

@@ -9,6 +9,8 @@ type RouteOptions struct {
 	RuleSet                    []RuleSet                         `json:"rule_set,omitempty"`
 	Final                      string                            `json:"final,omitempty"`
 	FindProcess                bool                              `json:"find_process,omitempty"`
+	FindNeighbor               bool                              `json:"find_neighbor,omitempty"`
+	DHCPLeaseFiles             badoption.Listable[string]        `json:"dhcp_lease_files,omitempty"`
 	AutoDetectInterface        bool                              `json:"auto_detect_interface,omitempty"`
 	OverrideAndroidVPN         bool                              `json:"override_android_vpn,omitempty"`
 	DefaultInterface           string                            `json:"default_interface,omitempty"`

option/rule.go

@@ -103,6 +103,8 @@ type RawDefaultRule struct {
 	InterfaceAddress         *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]]        `json:"interface_address,omitempty"`
 	NetworkInterfaceAddress  *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"`
 	DefaultInterfaceAddress  badoption.Listable[*badoption.Prefixable]                                   `json:"default_interface_address,omitempty"`
+	SourceMACAddress         badoption.Listable[string]                                                  `json:"source_mac_address,omitempty"`
+	SourceHostname           badoption.Listable[string]                                                  `json:"source_hostname,omitempty"`
 	PreferredBy              badoption.Listable[string]                                                  `json:"preferred_by,omitempty"`
 	RuleSet                  badoption.Listable[string]                                                  `json:"rule_set,omitempty"`
 	RuleSetIPCIDRMatchSource bool                                                                        `json:"rule_set_ip_cidr_match_source,omitempty"`

option/rule_dns.go

@@ -106,6 +106,8 @@ type RawDefaultDNSRule struct {
 	InterfaceAddress         *badjson.TypedMap[string, badoption.Listable[*badoption.Prefixable]]        `json:"interface_address,omitempty"`
 	NetworkInterfaceAddress  *badjson.TypedMap[InterfaceType, badoption.Listable[*badoption.Prefixable]] `json:"network_interface_address,omitempty"`
 	DefaultInterfaceAddress  badoption.Listable[*badoption.Prefixable]                                   `json:"default_interface_address,omitempty"`
+	SourceMACAddress         badoption.Listable[string]                                                  `json:"source_mac_address,omitempty"`
+	SourceHostname           badoption.Listable[string]                                                  `json:"source_hostname,omitempty"`
 	RuleSet                  badoption.Listable[string]                                                  `json:"rule_set,omitempty"`
 	RuleSetIPCIDRMatchSource bool                                                                        `json:"rule_set_ip_cidr_match_source,omitempty"`
 	RuleSetIPCIDRAcceptEmpty bool                                                                        `json:"rule_set_ip_cidr_accept_empty,omitempty"`

option/tun.go

@@ -39,6 +39,8 @@ type TunInboundOptions struct {
 	IncludeAndroidUser            badoption.Listable[int]          `json:"include_android_user,omitempty"`
 	IncludePackage                badoption.Listable[string]       `json:"include_package,omitempty"`
 	ExcludePackage                badoption.Listable[string]       `json:"exclude_package,omitempty"`
+	IncludeMACAddress             badoption.Listable[string]       `json:"include_mac_address,omitempty"`
+	ExcludeMACAddress             badoption.Listable[string]       `json:"exclude_mac_address,omitempty"`
 	UDPTimeout                    UDPTimeoutCompat                 `json:"udp_timeout,omitempty"`
 	Stack                         string                           `json:"stack,omitempty"`
 	Platform                      *TunPlatformOptions              `json:"platform,omitempty"`

protocol/tun/inbound.go

@@ -67,6 +67,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	if options.GSO {
 		return nil, E.New("GSO option in tun is deprecated in sing-box 1.11.0 and removed in sing-box 1.12.0")
 	}
+	//nolint:staticcheck
+	if options.InboundOptions != (option.InboundOptions{}) {
+		return nil, E.New("legacy inbound fields are deprecated in sing-box 1.11.0 and removed in sing-box 1.13.0, checkout migration: https://sing-box.sagernet.org/migration/#migrate-legacy-inbound-fields-to-rule-actions")
+	}
 
 	address := options.Address
 	inet4Address := common.Filter(address, func(it netip.Prefix) bool {
@@ -156,6 +160,22 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	if nfQueue == 0 {
 		nfQueue = tun.DefaultAutoRedirectNFQueue
 	}
+	var includeMACAddress []net.HardwareAddr
+	for i, macString := range options.IncludeMACAddress {
+		mac, macErr := net.ParseMAC(macString)
+		if macErr != nil {
+			return nil, E.Cause(macErr, "parse include_mac_address[", i, "]")
+		}
+		includeMACAddress = append(includeMACAddress, mac)
+	}
+	var excludeMACAddress []net.HardwareAddr
+	for i, macString := range options.ExcludeMACAddress {
+		mac, macErr := net.ParseMAC(macString)
+		if macErr != nil {
+			return nil, E.Cause(macErr, "parse exclude_mac_address[", i, "]")
+		}
+		excludeMACAddress = append(excludeMACAddress, mac)
+	}
 	networkManager := service.FromContext[adapter.NetworkManager](ctx)
 	multiPendingPackets := C.IsDarwin && ((options.Stack == "gvisor" && tunMTU < 32768) || (options.Stack != "gvisor" && options.MTU <= 9000))
 	inbound := &Inbound{
@@ -193,6 +213,8 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 			IncludeAndroidUser:                    options.IncludeAndroidUser,
 			IncludePackage:                        options.IncludePackage,
 			ExcludePackage:                        options.ExcludePackage,
+			IncludeMACAddress:                     includeMACAddress,
+			ExcludeMACAddress:                     excludeMACAddress,
 			InterfaceMonitor:                      networkManager.InterfaceMonitor(),
 			EXP_MultiPendingPackets:               multiPendingPackets,
 		},

route/neighbor_resolver_darwin.go

@@ -0,0 +1,239 @@
+//go:build darwin
+
+package route
+
+import (
+	"net"
+	"net/netip"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/sagernet/fswatch"
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+
+	"golang.org/x/net/route"
+	"golang.org/x/sys/unix"
+)
+
+var defaultLeaseFiles = []string{
+	"/var/db/dhcpd_leases",
+	"/tmp/dhcp.leases",
+}
+
+type neighborResolver struct {
+	logger          logger.ContextLogger
+	leaseFiles      []string
+	access          sync.RWMutex
+	neighborIPToMAC map[netip.Addr]net.HardwareAddr
+	leaseIPToMAC    map[netip.Addr]net.HardwareAddr
+	ipToHostname    map[netip.Addr]string
+	macToHostname   map[string]string
+	watcher         *fswatch.Watcher
+	done            chan struct{}
+}
+
+func newNeighborResolver(resolverLogger logger.ContextLogger, leaseFiles []string) (adapter.NeighborResolver, error) {
+	if len(leaseFiles) == 0 {
+		for _, path := range defaultLeaseFiles {
+			info, err := os.Stat(path)
+			if err == nil && info.Size() > 0 {
+				leaseFiles = append(leaseFiles, path)
+			}
+		}
+	}
+	return &neighborResolver{
+		logger:          resolverLogger,
+		leaseFiles:      leaseFiles,
+		neighborIPToMAC: make(map[netip.Addr]net.HardwareAddr),
+		leaseIPToMAC:    make(map[netip.Addr]net.HardwareAddr),
+		ipToHostname:    make(map[netip.Addr]string),
+		macToHostname:   make(map[string]string),
+		done:            make(chan struct{}),
+	}, nil
+}
+
+func (r *neighborResolver) Start() error {
+	err := r.loadNeighborTable()
+	if err != nil {
+		r.logger.Warn(E.Cause(err, "load neighbor table"))
+	}
+	r.doReloadLeaseFiles()
+	go r.subscribeNeighborUpdates()
+	if len(r.leaseFiles) > 0 {
+		watcher, err := fswatch.NewWatcher(fswatch.Options{
+			Path:   r.leaseFiles,
+			Logger: r.logger,
+			Callback: func(_ string) {
+				r.doReloadLeaseFiles()
+			},
+		})
+		if err != nil {
+			r.logger.Warn(E.Cause(err, "create lease file watcher"))
+		} else {
+			r.watcher = watcher
+			err = watcher.Start()
+			if err != nil {
+				r.logger.Warn(E.Cause(err, "start lease file watcher"))
+			}
+		}
+	}
+	return nil
+}
+
+func (r *neighborResolver) Close() error {
+	close(r.done)
+	if r.watcher != nil {
+		return r.watcher.Close()
+	}
+	return nil
+}
+
+func (r *neighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	mac, found := r.neighborIPToMAC[address]
+	if found {
+		return mac, true
+	}
+	mac, found = r.leaseIPToMAC[address]
+	if found {
+		return mac, true
+	}
+	mac, found = extractMACFromEUI64(address)
+	if found {
+		return mac, true
+	}
+	return nil, false
+}
+
+func (r *neighborResolver) LookupHostname(address netip.Addr) (string, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	hostname, found := r.ipToHostname[address]
+	if found {
+		return hostname, true
+	}
+	mac, macFound := r.neighborIPToMAC[address]
+	if !macFound {
+		mac, macFound = r.leaseIPToMAC[address]
+	}
+	if !macFound {
+		mac, macFound = extractMACFromEUI64(address)
+	}
+	if macFound {
+		hostname, found = r.macToHostname[mac.String()]
+		if found {
+			return hostname, true
+		}
+	}
+	return "", false
+}
+
+func (r *neighborResolver) loadNeighborTable() error {
+	entries, err := ReadNeighborEntries()
+	if err != nil {
+		return err
+	}
+	r.access.Lock()
+	defer r.access.Unlock()
+	for _, entry := range entries {
+		r.neighborIPToMAC[entry.Address] = entry.MACAddress
+	}
+	return nil
+}
+
+func (r *neighborResolver) subscribeNeighborUpdates() {
+	routeSocket, err := unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, 0)
+	if err != nil {
+		r.logger.Warn(E.Cause(err, "subscribe neighbor updates"))
+		return
+	}
+	err = unix.SetNonblock(routeSocket, true)
+	if err != nil {
+		unix.Close(routeSocket)
+		r.logger.Warn(E.Cause(err, "set route socket nonblock"))
+		return
+	}
+	routeSocketFile := os.NewFile(uintptr(routeSocket), "route")
+	defer routeSocketFile.Close()
+	buffer := buf.NewPacket()
+	defer buffer.Release()
+	for {
+		select {
+		case <-r.done:
+			return
+		default:
+		}
+		err = setReadDeadline(routeSocketFile, 3*time.Second)
+		if err != nil {
+			r.logger.Warn(E.Cause(err, "set route socket read deadline"))
+			return
+		}
+		n, err := routeSocketFile.Read(buffer.FreeBytes())
+		if err != nil {
+			if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
+				continue
+			}
+			select {
+			case <-r.done:
+				return
+			default:
+			}
+			r.logger.Warn(E.Cause(err, "receive neighbor update"))
+			continue
+		}
+		messages, err := route.ParseRIB(route.RIBTypeRoute, buffer.FreeBytes()[:n])
+		if err != nil {
+			continue
+		}
+		for _, message := range messages {
+			routeMessage, isRouteMessage := message.(*route.RouteMessage)
+			if !isRouteMessage {
+				continue
+			}
+			if routeMessage.Flags&unix.RTF_LLINFO == 0 {
+				continue
+			}
+			address, mac, isDelete, ok := ParseRouteNeighborMessage(routeMessage)
+			if !ok {
+				continue
+			}
+			r.access.Lock()
+			if isDelete {
+				delete(r.neighborIPToMAC, address)
+			} else {
+				r.neighborIPToMAC[address] = mac
+			}
+			r.access.Unlock()
+		}
+	}
+}
+
+func (r *neighborResolver) doReloadLeaseFiles() {
+	leaseIPToMAC, ipToHostname, macToHostname := ReloadLeaseFiles(r.leaseFiles)
+	r.access.Lock()
+	r.leaseIPToMAC = leaseIPToMAC
+	r.ipToHostname = ipToHostname
+	r.macToHostname = macToHostname
+	r.access.Unlock()
+}
+
+func setReadDeadline(file *os.File, timeout time.Duration) error {
+	rawConn, err := file.SyscallConn()
+	if err != nil {
+		return err
+	}
+	var controlErr error
+	err = rawConn.Control(func(fd uintptr) {
+		tv := unix.NsecToTimeval(int64(timeout))
+		controlErr = unix.SetsockoptTimeval(int(fd), unix.SOL_SOCKET, unix.SO_RCVTIMEO, &tv)
+	})
+	if err != nil {
+		return err
+	}
+	return controlErr
+}

route/neighbor_resolver_lease.go

@@ -0,0 +1,386 @@
+package route
+
+import (
+	"bufio"
+	"encoding/hex"
+	"net"
+	"net/netip"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func parseLeaseFile(path string, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	file, err := os.Open(path)
+	if err != nil {
+		return
+	}
+	defer file.Close()
+	if strings.HasSuffix(path, "dhcpd_leases") {
+		parseBootpdLeases(file, ipToMAC, ipToHostname, macToHostname)
+		return
+	}
+	if strings.HasSuffix(path, "kea-leases4.csv") {
+		parseKeaCSV4(file, ipToMAC, ipToHostname, macToHostname)
+		return
+	}
+	if strings.HasSuffix(path, "kea-leases6.csv") {
+		parseKeaCSV6(file, ipToMAC, ipToHostname, macToHostname)
+		return
+	}
+	if strings.HasSuffix(path, "dhcpd.leases") {
+		parseISCDhcpd(file, ipToMAC, ipToHostname, macToHostname)
+		return
+	}
+	parseDnsmasqOdhcpd(file, ipToMAC, ipToHostname, macToHostname)
+}
+
+func ReloadLeaseFiles(leaseFiles []string) (leaseIPToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	leaseIPToMAC = make(map[netip.Addr]net.HardwareAddr)
+	ipToHostname = make(map[netip.Addr]string)
+	macToHostname = make(map[string]string)
+	for _, path := range leaseFiles {
+		parseLeaseFile(path, leaseIPToMAC, ipToHostname, macToHostname)
+	}
+	return
+}
+
+func parseDnsmasqOdhcpd(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	now := time.Now().Unix()
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "duid ") {
+			continue
+		}
+		if strings.HasPrefix(line, "# ") {
+			parseOdhcpdLine(line[2:], ipToMAC, ipToHostname, macToHostname)
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) < 4 {
+			continue
+		}
+		expiry, err := strconv.ParseInt(fields[0], 10, 64)
+		if err != nil {
+			continue
+		}
+		if expiry != 0 && expiry < now {
+			continue
+		}
+		if strings.Contains(fields[1], ":") {
+			mac, macErr := net.ParseMAC(fields[1])
+			if macErr != nil {
+				continue
+			}
+			address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[2]))
+			if !addrOK {
+				continue
+			}
+			address = address.Unmap()
+			ipToMAC[address] = mac
+			hostname := fields[3]
+			if hostname != "*" {
+				ipToHostname[address] = hostname
+				macToHostname[mac.String()] = hostname
+			}
+		} else {
+			var mac net.HardwareAddr
+			if len(fields) >= 5 {
+				duid, duidErr := parseDUID(fields[4])
+				if duidErr == nil {
+					mac, _ = extractMACFromDUID(duid)
+				}
+			}
+			address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[2]))
+			if !addrOK {
+				continue
+			}
+			address = address.Unmap()
+			if mac != nil {
+				ipToMAC[address] = mac
+			}
+			hostname := fields[3]
+			if hostname != "*" {
+				ipToHostname[address] = hostname
+				if mac != nil {
+					macToHostname[mac.String()] = hostname
+				}
+			}
+		}
+	}
+}
+
+func parseOdhcpdLine(line string, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	fields := strings.Fields(line)
+	if len(fields) < 5 {
+		return
+	}
+	validTime, err := strconv.ParseInt(fields[4], 10, 64)
+	if err != nil {
+		return
+	}
+	if validTime == 0 {
+		return
+	}
+	if validTime > 0 && validTime < time.Now().Unix() {
+		return
+	}
+	hostname := fields[3]
+	if hostname == "-" || strings.HasPrefix(hostname, `broken\x20`) {
+		hostname = ""
+	}
+	if len(fields) >= 8 && fields[2] == "ipv4" {
+		mac, macErr := net.ParseMAC(fields[1])
+		if macErr != nil {
+			return
+		}
+		addressField := fields[7]
+		slashIndex := strings.IndexByte(addressField, '/')
+		if slashIndex >= 0 {
+			addressField = addressField[:slashIndex]
+		}
+		address, addrOK := netip.AddrFromSlice(net.ParseIP(addressField))
+		if !addrOK {
+			return
+		}
+		address = address.Unmap()
+		ipToMAC[address] = mac
+		if hostname != "" {
+			ipToHostname[address] = hostname
+			macToHostname[mac.String()] = hostname
+		}
+		return
+	}
+	var mac net.HardwareAddr
+	duidHex := fields[1]
+	duidBytes, hexErr := hex.DecodeString(duidHex)
+	if hexErr == nil {
+		mac, _ = extractMACFromDUID(duidBytes)
+	}
+	for i := 7; i < len(fields); i++ {
+		addressField := fields[i]
+		slashIndex := strings.IndexByte(addressField, '/')
+		if slashIndex >= 0 {
+			addressField = addressField[:slashIndex]
+		}
+		address, addrOK := netip.AddrFromSlice(net.ParseIP(addressField))
+		if !addrOK {
+			continue
+		}
+		address = address.Unmap()
+		if mac != nil {
+			ipToMAC[address] = mac
+		}
+		if hostname != "" {
+			ipToHostname[address] = hostname
+			if mac != nil {
+				macToHostname[mac.String()] = hostname
+			}
+		}
+	}
+}
+
+func parseISCDhcpd(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	scanner := bufio.NewScanner(file)
+	var currentIP netip.Addr
+	var currentMAC net.HardwareAddr
+	var currentHostname string
+	var currentActive bool
+	var inLease bool
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if strings.HasPrefix(line, "lease ") && strings.HasSuffix(line, "{") {
+			ipString := strings.TrimSuffix(strings.TrimPrefix(line, "lease "), " {")
+			parsed, addrOK := netip.AddrFromSlice(net.ParseIP(ipString))
+			if addrOK {
+				currentIP = parsed.Unmap()
+				inLease = true
+				currentMAC = nil
+				currentHostname = ""
+				currentActive = false
+			}
+			continue
+		}
+		if line == "}" && inLease {
+			if currentActive && currentMAC != nil {
+				ipToMAC[currentIP] = currentMAC
+				if currentHostname != "" {
+					ipToHostname[currentIP] = currentHostname
+					macToHostname[currentMAC.String()] = currentHostname
+				}
+			} else {
+				delete(ipToMAC, currentIP)
+				delete(ipToHostname, currentIP)
+			}
+			inLease = false
+			continue
+		}
+		if !inLease {
+			continue
+		}
+		if strings.HasPrefix(line, "hardware ethernet ") {
+			macString := strings.TrimSuffix(strings.TrimPrefix(line, "hardware ethernet "), ";")
+			parsed, macErr := net.ParseMAC(macString)
+			if macErr == nil {
+				currentMAC = parsed
+			}
+		} else if strings.HasPrefix(line, "client-hostname ") {
+			hostname := strings.TrimSuffix(strings.TrimPrefix(line, "client-hostname "), ";")
+			hostname = strings.Trim(hostname, "\"")
+			if hostname != "" {
+				currentHostname = hostname
+			}
+		} else if strings.HasPrefix(line, "binding state ") {
+			state := strings.TrimSuffix(strings.TrimPrefix(line, "binding state "), ";")
+			currentActive = state == "active"
+		}
+	}
+}
+
+func parseKeaCSV4(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	scanner := bufio.NewScanner(file)
+	firstLine := true
+	for scanner.Scan() {
+		if firstLine {
+			firstLine = false
+			continue
+		}
+		fields := strings.Split(scanner.Text(), ",")
+		if len(fields) < 10 {
+			continue
+		}
+		if fields[9] != "0" {
+			continue
+		}
+		address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[0]))
+		if !addrOK {
+			continue
+		}
+		address = address.Unmap()
+		mac, macErr := net.ParseMAC(fields[1])
+		if macErr != nil {
+			continue
+		}
+		ipToMAC[address] = mac
+		hostname := ""
+		if len(fields) > 8 {
+			hostname = fields[8]
+		}
+		if hostname != "" {
+			ipToHostname[address] = hostname
+			macToHostname[mac.String()] = hostname
+		}
+	}
+}
+
+func parseKeaCSV6(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	scanner := bufio.NewScanner(file)
+	firstLine := true
+	for scanner.Scan() {
+		if firstLine {
+			firstLine = false
+			continue
+		}
+		fields := strings.Split(scanner.Text(), ",")
+		if len(fields) < 14 {
+			continue
+		}
+		if fields[13] != "0" {
+			continue
+		}
+		address, addrOK := netip.AddrFromSlice(net.ParseIP(fields[0]))
+		if !addrOK {
+			continue
+		}
+		address = address.Unmap()
+		var mac net.HardwareAddr
+		if fields[12] != "" {
+			mac, _ = net.ParseMAC(fields[12])
+		}
+		if mac == nil {
+			duid, duidErr := hex.DecodeString(strings.ReplaceAll(fields[1], ":", ""))
+			if duidErr == nil {
+				mac, _ = extractMACFromDUID(duid)
+			}
+		}
+		hostname := ""
+		if len(fields) > 11 {
+			hostname = fields[11]
+		}
+		if mac != nil {
+			ipToMAC[address] = mac
+		}
+		if hostname != "" {
+			ipToHostname[address] = hostname
+			if mac != nil {
+				macToHostname[mac.String()] = hostname
+			}
+		}
+	}
+}
+
+func parseBootpdLeases(file *os.File, ipToMAC map[netip.Addr]net.HardwareAddr, ipToHostname map[netip.Addr]string, macToHostname map[string]string) {
+	now := time.Now().Unix()
+	scanner := bufio.NewScanner(file)
+	var currentName string
+	var currentIP netip.Addr
+	var currentMAC net.HardwareAddr
+	var currentLease int64
+	var inBlock bool
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if line == "{" {
+			inBlock = true
+			currentName = ""
+			currentIP = netip.Addr{}
+			currentMAC = nil
+			currentLease = 0
+			continue
+		}
+		if line == "}" && inBlock {
+			if currentMAC != nil && currentIP.IsValid() {
+				if currentLease == 0 || currentLease >= now {
+					ipToMAC[currentIP] = currentMAC
+					if currentName != "" {
+						ipToHostname[currentIP] = currentName
+						macToHostname[currentMAC.String()] = currentName
+					}
+				}
+			}
+			inBlock = false
+			continue
+		}
+		if !inBlock {
+			continue
+		}
+		key, value, found := strings.Cut(line, "=")
+		if !found {
+			continue
+		}
+		switch key {
+		case "name":
+			currentName = value
+		case "ip_address":
+			parsed, addrOK := netip.AddrFromSlice(net.ParseIP(value))
+			if addrOK {
+				currentIP = parsed.Unmap()
+			}
+		case "hw_address":
+			typeAndMAC, hasSep := strings.CutPrefix(value, "1,")
+			if hasSep {
+				mac, macErr := net.ParseMAC(typeAndMAC)
+				if macErr == nil {
+					currentMAC = mac
+				}
+			}
+		case "lease":
+			leaseHex := strings.TrimPrefix(value, "0x")
+			parsed, parseErr := strconv.ParseInt(leaseHex, 16, 64)
+			if parseErr == nil {
+				currentLease = parsed
+			}
+		}
+	}
+}

route/neighbor_resolver_linux.go

@@ -0,0 +1,224 @@
+//go:build linux
+
+package route
+
+import (
+	"net"
+	"net/netip"
+	"os"
+	"slices"
+	"sync"
+	"time"
+
+	"github.com/sagernet/fswatch"
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+
+	"github.com/jsimonetti/rtnetlink"
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+var defaultLeaseFiles = []string{
+	"/tmp/dhcp.leases",
+	"/var/lib/dhcp/dhcpd.leases",
+	"/var/lib/dhcpd/dhcpd.leases",
+	"/var/lib/kea/kea-leases4.csv",
+	"/var/lib/kea/kea-leases6.csv",
+}
+
+type neighborResolver struct {
+	logger          logger.ContextLogger
+	leaseFiles      []string
+	access          sync.RWMutex
+	neighborIPToMAC map[netip.Addr]net.HardwareAddr
+	leaseIPToMAC    map[netip.Addr]net.HardwareAddr
+	ipToHostname    map[netip.Addr]string
+	macToHostname   map[string]string
+	watcher         *fswatch.Watcher
+	done            chan struct{}
+}
+
+func newNeighborResolver(resolverLogger logger.ContextLogger, leaseFiles []string) (adapter.NeighborResolver, error) {
+	if len(leaseFiles) == 0 {
+		for _, path := range defaultLeaseFiles {
+			info, err := os.Stat(path)
+			if err == nil && info.Size() > 0 {
+				leaseFiles = append(leaseFiles, path)
+			}
+		}
+	}
+	return &neighborResolver{
+		logger:          resolverLogger,
+		leaseFiles:      leaseFiles,
+		neighborIPToMAC: make(map[netip.Addr]net.HardwareAddr),
+		leaseIPToMAC:    make(map[netip.Addr]net.HardwareAddr),
+		ipToHostname:    make(map[netip.Addr]string),
+		macToHostname:   make(map[string]string),
+		done:            make(chan struct{}),
+	}, nil
+}
+
+func (r *neighborResolver) Start() error {
+	err := r.loadNeighborTable()
+	if err != nil {
+		r.logger.Warn(E.Cause(err, "load neighbor table"))
+	}
+	r.doReloadLeaseFiles()
+	go r.subscribeNeighborUpdates()
+	if len(r.leaseFiles) > 0 {
+		watcher, err := fswatch.NewWatcher(fswatch.Options{
+			Path:   r.leaseFiles,
+			Logger: r.logger,
+			Callback: func(_ string) {
+				r.doReloadLeaseFiles()
+			},
+		})
+		if err != nil {
+			r.logger.Warn(E.Cause(err, "create lease file watcher"))
+		} else {
+			r.watcher = watcher
+			err = watcher.Start()
+			if err != nil {
+				r.logger.Warn(E.Cause(err, "start lease file watcher"))
+			}
+		}
+	}
+	return nil
+}
+
+func (r *neighborResolver) Close() error {
+	close(r.done)
+	if r.watcher != nil {
+		return r.watcher.Close()
+	}
+	return nil
+}
+
+func (r *neighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	mac, found := r.neighborIPToMAC[address]
+	if found {
+		return mac, true
+	}
+	mac, found = r.leaseIPToMAC[address]
+	if found {
+		return mac, true
+	}
+	mac, found = extractMACFromEUI64(address)
+	if found {
+		return mac, true
+	}
+	return nil, false
+}
+
+func (r *neighborResolver) LookupHostname(address netip.Addr) (string, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	hostname, found := r.ipToHostname[address]
+	if found {
+		return hostname, true
+	}
+	mac, macFound := r.neighborIPToMAC[address]
+	if !macFound {
+		mac, macFound = r.leaseIPToMAC[address]
+	}
+	if !macFound {
+		mac, macFound = extractMACFromEUI64(address)
+	}
+	if macFound {
+		hostname, found = r.macToHostname[mac.String()]
+		if found {
+			return hostname, true
+		}
+	}
+	return "", false
+}
+
+func (r *neighborResolver) loadNeighborTable() error {
+	connection, err := rtnetlink.Dial(nil)
+	if err != nil {
+		return E.Cause(err, "dial rtnetlink")
+	}
+	defer connection.Close()
+	neighbors, err := connection.Neigh.List()
+	if err != nil {
+		return E.Cause(err, "list neighbors")
+	}
+	r.access.Lock()
+	defer r.access.Unlock()
+	for _, neigh := range neighbors {
+		if neigh.Attributes == nil {
+			continue
+		}
+		if neigh.Attributes.LLAddress == nil || len(neigh.Attributes.Address) == 0 {
+			continue
+		}
+		address, ok := netip.AddrFromSlice(neigh.Attributes.Address)
+		if !ok {
+			continue
+		}
+		r.neighborIPToMAC[address] = slices.Clone(neigh.Attributes.LLAddress)
+	}
+	return nil
+}
+
+func (r *neighborResolver) subscribeNeighborUpdates() {
+	connection, err := netlink.Dial(unix.NETLINK_ROUTE, &netlink.Config{
+		Groups: 1 << (unix.RTNLGRP_NEIGH - 1),
+	})
+	if err != nil {
+		r.logger.Warn(E.Cause(err, "subscribe neighbor updates"))
+		return
+	}
+	defer connection.Close()
+	for {
+		select {
+		case <-r.done:
+			return
+		default:
+		}
+		err = connection.SetReadDeadline(time.Now().Add(3 * time.Second))
+		if err != nil {
+			r.logger.Warn(E.Cause(err, "set netlink read deadline"))
+			return
+		}
+		messages, err := connection.Receive()
+		if err != nil {
+			if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
+				continue
+			}
+			select {
+			case <-r.done:
+				return
+			default:
+			}
+			r.logger.Warn(E.Cause(err, "receive neighbor update"))
+			continue
+		}
+		for _, message := range messages {
+			address, mac, isDelete, ok := ParseNeighborMessage(message)
+			if !ok {
+				continue
+			}
+			r.access.Lock()
+			if isDelete {
+				delete(r.neighborIPToMAC, address)
+			} else {
+				r.neighborIPToMAC[address] = mac
+			}
+			r.access.Unlock()
+		}
+	}
+}
+
+func (r *neighborResolver) doReloadLeaseFiles() {
+	leaseIPToMAC, ipToHostname, macToHostname := ReloadLeaseFiles(r.leaseFiles)
+	r.access.Lock()
+	r.leaseIPToMAC = leaseIPToMAC
+	r.ipToHostname = ipToHostname
+	r.macToHostname = macToHostname
+	r.access.Unlock()
+}

route/neighbor_resolver_parse.go

@@ -0,0 +1,50 @@
+package route
+
+import (
+	"encoding/binary"
+	"encoding/hex"
+	"net"
+	"net/netip"
+	"slices"
+	"strings"
+)
+
+func extractMACFromDUID(duid []byte) (net.HardwareAddr, bool) {
+	if len(duid) < 4 {
+		return nil, false
+	}
+	duidType := binary.BigEndian.Uint16(duid[0:2])
+	hwType := binary.BigEndian.Uint16(duid[2:4])
+	if hwType != 1 {
+		return nil, false
+	}
+	switch duidType {
+	case 1:
+		if len(duid) < 14 {
+			return nil, false
+		}
+		return net.HardwareAddr(slices.Clone(duid[8:14])), true
+	case 3:
+		if len(duid) < 10 {
+			return nil, false
+		}
+		return net.HardwareAddr(slices.Clone(duid[4:10])), true
+	}
+	return nil, false
+}
+
+func extractMACFromEUI64(address netip.Addr) (net.HardwareAddr, bool) {
+	if !address.Is6() {
+		return nil, false
+	}
+	b := address.As16()
+	if b[11] != 0xff || b[12] != 0xfe {
+		return nil, false
+	}
+	return net.HardwareAddr{b[8] ^ 0x02, b[9], b[10], b[13], b[14], b[15]}, true
+}
+
+func parseDUID(s string) ([]byte, error) {
+	cleaned := strings.ReplaceAll(s, ":", "")
+	return hex.DecodeString(cleaned)
+}

route/neighbor_resolver_platform.go

@@ -0,0 +1,84 @@
+package route
+
+import (
+	"net"
+	"net/netip"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common/logger"
+)
+
+type platformNeighborResolver struct {
+	logger        logger.ContextLogger
+	platform      adapter.PlatformInterface
+	access        sync.RWMutex
+	ipToMAC       map[netip.Addr]net.HardwareAddr
+	ipToHostname  map[netip.Addr]string
+	macToHostname map[string]string
+}
+
+func newPlatformNeighborResolver(resolverLogger logger.ContextLogger, platform adapter.PlatformInterface) adapter.NeighborResolver {
+	return &platformNeighborResolver{
+		logger:        resolverLogger,
+		platform:      platform,
+		ipToMAC:       make(map[netip.Addr]net.HardwareAddr),
+		ipToHostname:  make(map[netip.Addr]string),
+		macToHostname: make(map[string]string),
+	}
+}
+
+func (r *platformNeighborResolver) Start() error {
+	return r.platform.StartNeighborMonitor(r)
+}
+
+func (r *platformNeighborResolver) Close() error {
+	return r.platform.CloseNeighborMonitor(r)
+}
+
+func (r *platformNeighborResolver) LookupMAC(address netip.Addr) (net.HardwareAddr, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	mac, found := r.ipToMAC[address]
+	if found {
+		return mac, true
+	}
+	return extractMACFromEUI64(address)
+}
+
+func (r *platformNeighborResolver) LookupHostname(address netip.Addr) (string, bool) {
+	r.access.RLock()
+	defer r.access.RUnlock()
+	hostname, found := r.ipToHostname[address]
+	if found {
+		return hostname, true
+	}
+	mac, found := r.ipToMAC[address]
+	if !found {
+		mac, found = extractMACFromEUI64(address)
+	}
+	if !found {
+		return "", false
+	}
+	hostname, found = r.macToHostname[mac.String()]
+	return hostname, found
+}
+
+func (r *platformNeighborResolver) UpdateNeighborTable(entries []adapter.NeighborEntry) {
+	ipToMAC := make(map[netip.Addr]net.HardwareAddr)
+	ipToHostname := make(map[netip.Addr]string)
+	macToHostname := make(map[string]string)
+	for _, entry := range entries {
+		ipToMAC[entry.Address] = entry.MACAddress
+		if entry.Hostname != "" {
+			ipToHostname[entry.Address] = entry.Hostname
+			macToHostname[entry.MACAddress.String()] = entry.Hostname
+		}
+	}
+	r.access.Lock()
+	r.ipToMAC = ipToMAC
+	r.ipToHostname = ipToHostname
+	r.macToHostname = macToHostname
+	r.access.Unlock()
+	r.logger.Info("updated neighbor table: ", len(entries), " entries")
+}

route/neighbor_resolver_stub.go

@@ -0,0 +1,14 @@
+//go:build !linux && !darwin
+
+package route
+
+import (
+	"os"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common/logger"
+)
+
+func newNeighborResolver(_ logger.ContextLogger, _ []string) (adapter.NeighborResolver, error) {
+	return nil, os.ErrInvalid
+}

route/neighbor_table_darwin.go

@@ -0,0 +1,104 @@
+//go:build darwin
+
+package route
+
+import (
+	"net"
+	"net/netip"
+	"syscall"
+
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"golang.org/x/net/route"
+	"golang.org/x/sys/unix"
+)
+
+func ReadNeighborEntries() ([]adapter.NeighborEntry, error) {
+	var entries []adapter.NeighborEntry
+	ipv4Entries, err := readNeighborEntriesAF(syscall.AF_INET)
+	if err != nil {
+		return nil, E.Cause(err, "read IPv4 neighbors")
+	}
+	entries = append(entries, ipv4Entries...)
+	ipv6Entries, err := readNeighborEntriesAF(syscall.AF_INET6)
+	if err != nil {
+		return nil, E.Cause(err, "read IPv6 neighbors")
+	}
+	entries = append(entries, ipv6Entries...)
+	return entries, nil
+}
+
+func readNeighborEntriesAF(addressFamily int) ([]adapter.NeighborEntry, error) {
+	rib, err := route.FetchRIB(addressFamily, route.RIBType(syscall.NET_RT_FLAGS), syscall.RTF_LLINFO)
+	if err != nil {
+		return nil, err
+	}
+	messages, err := route.ParseRIB(route.RIBType(syscall.NET_RT_FLAGS), rib)
+	if err != nil {
+		return nil, err
+	}
+	var entries []adapter.NeighborEntry
+	for _, message := range messages {
+		routeMessage, isRouteMessage := message.(*route.RouteMessage)
+		if !isRouteMessage {
+			continue
+		}
+		address, macAddress, ok := parseRouteNeighborEntry(routeMessage)
+		if !ok {
+			continue
+		}
+		entries = append(entries, adapter.NeighborEntry{
+			Address:    address,
+			MACAddress: macAddress,
+		})
+	}
+	return entries, nil
+}
+
+func parseRouteNeighborEntry(message *route.RouteMessage) (address netip.Addr, macAddress net.HardwareAddr, ok bool) {
+	if len(message.Addrs) <= unix.RTAX_GATEWAY {
+		return
+	}
+	gateway, isLinkAddr := message.Addrs[unix.RTAX_GATEWAY].(*route.LinkAddr)
+	if !isLinkAddr || len(gateway.Addr) < 6 {
+		return
+	}
+	switch destination := message.Addrs[unix.RTAX_DST].(type) {
+	case *route.Inet4Addr:
+		address = netip.AddrFrom4(destination.IP)
+	case *route.Inet6Addr:
+		address = netip.AddrFrom16(destination.IP)
+	default:
+		return
+	}
+	macAddress = net.HardwareAddr(make([]byte, len(gateway.Addr)))
+	copy(macAddress, gateway.Addr)
+	ok = true
+	return
+}
+
+func ParseRouteNeighborMessage(message *route.RouteMessage) (address netip.Addr, macAddress net.HardwareAddr, isDelete bool, ok bool) {
+	isDelete = message.Type == unix.RTM_DELETE
+	if len(message.Addrs) <= unix.RTAX_GATEWAY {
+		return
+	}
+	switch destination := message.Addrs[unix.RTAX_DST].(type) {
+	case *route.Inet4Addr:
+		address = netip.AddrFrom4(destination.IP)
+	case *route.Inet6Addr:
+		address = netip.AddrFrom16(destination.IP)
+	default:
+		return
+	}
+	if !isDelete {
+		gateway, isLinkAddr := message.Addrs[unix.RTAX_GATEWAY].(*route.LinkAddr)
+		if !isLinkAddr || len(gateway.Addr) < 6 {
+			return
+		}
+		macAddress = net.HardwareAddr(make([]byte, len(gateway.Addr)))
+		copy(macAddress, gateway.Addr)
+	}
+	ok = true
+	return
+}

route/neighbor_table_linux.go

@@ -0,0 +1,68 @@
+//go:build linux
+
+package route
+
+import (
+	"net"
+	"net/netip"
+	"slices"
+
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"github.com/jsimonetti/rtnetlink"
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+func ReadNeighborEntries() ([]adapter.NeighborEntry, error) {
+	connection, err := rtnetlink.Dial(nil)
+	if err != nil {
+		return nil, E.Cause(err, "dial rtnetlink")
+	}
+	defer connection.Close()
+	neighbors, err := connection.Neigh.List()
+	if err != nil {
+		return nil, E.Cause(err, "list neighbors")
+	}
+	var entries []adapter.NeighborEntry
+	for _, neighbor := range neighbors {
+		if neighbor.Attributes == nil {
+			continue
+		}
+		if neighbor.Attributes.LLAddress == nil || len(neighbor.Attributes.Address) == 0 {
+			continue
+		}
+		address, ok := netip.AddrFromSlice(neighbor.Attributes.Address)
+		if !ok {
+			continue
+		}
+		entries = append(entries, adapter.NeighborEntry{
+			Address:    address,
+			MACAddress: slices.Clone(neighbor.Attributes.LLAddress),
+		})
+	}
+	return entries, nil
+}
+
+func ParseNeighborMessage(message netlink.Message) (address netip.Addr, macAddress net.HardwareAddr, isDelete bool, ok bool) {
+	var neighMessage rtnetlink.NeighMessage
+	err := neighMessage.UnmarshalBinary(message.Data)
+	if err != nil {
+		return
+	}
+	if neighMessage.Attributes == nil || len(neighMessage.Attributes.Address) == 0 {
+		return
+	}
+	address, ok = netip.AddrFromSlice(neighMessage.Attributes.Address)
+	if !ok {
+		return
+	}
+	isDelete = message.Header.Type == unix.RTM_DELNEIGH
+	if !isDelete && neighMessage.Attributes.LLAddress == nil {
+		ok = false
+		return
+	}
+	macAddress = slices.Clone(neighMessage.Attributes.LLAddress)
+	return
+}

route/platform_searcher.go

@@ -43,3 +43,7 @@ func (s *platformSearcher) FindProcessInfo(ctx context.Context, network string,
 
 	return s.platform.FindConnectionOwner(request)
 }
+
+func (s *platformSearcher) Close() error {
+	return nil
+}

route/process_cache.go

@@ -0,0 +1,34 @@
+package route
+
+import (
+	"context"
+	"net/netip"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/process"
+)
+
+type processCacheKey struct {
+	Network     string
+	Source      netip.AddrPort
+	Destination netip.AddrPort
+}
+
+type processCacheEntry struct {
+	result *adapter.ConnectionOwner
+	err    error
+}
+
+func (r *Router) findProcessInfoCached(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
+	key := processCacheKey{
+		Network:     network,
+		Source:      source,
+		Destination: destination,
+	}
+	if entry, ok := r.processCache.Get(key); ok {
+		return entry.result, entry.err
+	}
+	result, err := process.FindProcessInfo(r.processSearcher, ctx, network, source, destination)
+	r.processCache.Add(key, processCacheEntry{result: result, err: err})
+	return result, err
+}

route/route.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/process"
 	"github.com/sagernet/sing-box/common/sniff"
 	C "github.com/sagernet/sing-box/constant"
 	R "github.com/sagernet/sing-box/route/rule"
@@ -415,7 +414,7 @@ func (r *Router) matchRule(
 		} else if metadata.Destination.IsIP() {
 			originDestination = metadata.Destination.AddrPort()
 		}
-		processInfo, fErr := process.FindProcessInfo(r.processSearcher, ctx, metadata.Network, metadata.Source.AddrPort(), originDestination)
+		processInfo, fErr := r.findProcessInfoCached(ctx, metadata.Network, metadata.Source.AddrPort(), originDestination)
 		if fErr != nil {
 			r.logger.InfoContext(ctx, "failed to search process: ", fErr)
 		} else {
@@ -427,8 +426,8 @@ func (r *Router) matchRule(
 				} else {
 					r.logger.InfoContext(ctx, "found process path: ", processInfo.ProcessPath)
 				}
-			} else if processInfo.AndroidPackageName != "" {
-				r.logger.InfoContext(ctx, "found package name: ", processInfo.AndroidPackageName)
+			} else if len(processInfo.AndroidPackageNames) > 0 {
+				r.logger.InfoContext(ctx, "found package name: ", strings.Join(processInfo.AndroidPackageNames, ", "))
 			} else if processInfo.UserId != -1 {
 				if processInfo.UserName != "" {
 					r.logger.InfoContext(ctx, "found user: ", processInfo.UserName)
@@ -439,6 +438,23 @@ func (r *Router) matchRule(
 			metadata.ProcessInfo = processInfo
 		}
 	}
+	if r.neighborResolver != nil && metadata.SourceMACAddress == nil && metadata.Source.Addr.IsValid() {
+		mac, macFound := r.neighborResolver.LookupMAC(metadata.Source.Addr)
+		if macFound {
+			metadata.SourceMACAddress = mac
+		}
+		hostname, hostnameFound := r.neighborResolver.LookupHostname(metadata.Source.Addr)
+		if hostnameFound {
+			metadata.SourceHostname = hostname
+			if macFound {
+				r.logger.InfoContext(ctx, "found neighbor: ", mac, ", hostname: ", hostname)
+			} else {
+				r.logger.InfoContext(ctx, "found neighbor hostname: ", hostname)
+			}
+		} else if macFound {
+			r.logger.InfoContext(ctx, "found neighbor: ", mac)
+		}
+	}
 	if metadata.Destination.Addr.IsValid() && r.dnsTransport.FakeIP() != nil && r.dnsTransport.FakeIP().Store().Contains(metadata.Destination.Addr) {
 		domain, loaded := r.dnsTransport.FakeIP().Store().Lookup(metadata.Destination.Addr)
 		if !loaded {

route/router.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"os"
 	"runtime"
+	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
@@ -12,8 +13,11 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	R "github.com/sagernet/sing-box/route/rule"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/task"
+	"github.com/sagernet/sing/contrab/freelru"
+	"github.com/sagernet/sing/contrab/maphash"
 	"github.com/sagernet/sing/service"
 	"github.com/sagernet/sing/service/pause"
 )
@@ -31,9 +35,13 @@ type Router struct {
 	network           adapter.NetworkManager
 	rules             []adapter.Rule
 	needFindProcess   bool
+	needFindNeighbor  bool
+	leaseFiles        []string
 	ruleSets          []adapter.RuleSet
 	ruleSetMap        map[string]adapter.RuleSet
 	processSearcher   process.Searcher
+	processCache      freelru.Cache[processCacheKey, processCacheEntry]
+	neighborResolver  adapter.NeighborResolver
 	pauseManager      pause.Manager
 	trackers          []adapter.ConnectionTracker
 	platformInterface adapter.PlatformInterface
@@ -53,6 +61,8 @@ func NewRouter(ctx context.Context, logFactory log.Factory, options option.Route
 		rules:             make([]adapter.Rule, 0, len(options.Rules)),
 		ruleSetMap:        make(map[string]adapter.RuleSet),
 		needFindProcess:   hasRule(options.Rules, isProcessRule) || hasDNSRule(dnsOptions.Rules, isProcessDNSRule) || options.FindProcess,
+		needFindNeighbor:  hasRule(options.Rules, isNeighborRule) || hasDNSRule(dnsOptions.Rules, isNeighborDNSRule) || options.FindNeighbor,
+		leaseFiles:        options.DHCPLeaseFiles,
 		pauseManager:      service.FromContext[pause.Manager](ctx),
 		platformInterface: service.FromContext[adapter.PlatformInterface](ctx),
 	}
@@ -112,6 +122,7 @@ func (r *Router) Start(stage adapter.StartStage) error {
 		}
 		r.network.Initialize(r.ruleSets)
 		needFindProcess := r.needFindProcess
+		needFindNeighbor := r.needFindNeighbor
 		for _, ruleSet := range r.ruleSets {
 			metadata := ruleSet.Metadata()
 			if metadata.ContainsProcessRule {
@@ -141,6 +152,41 @@ func (r *Router) Start(stage adapter.StartStage) error {
 				}
 			}
 		}
+		if r.processSearcher != nil {
+			processCache := common.Must1(freelru.NewSharded[processCacheKey, processCacheEntry](256, maphash.NewHasher[processCacheKey]().Hash32))
+			processCache.SetLifetime(200 * time.Millisecond)
+			r.processCache = processCache
+		}
+		r.needFindNeighbor = needFindNeighbor
+		if needFindNeighbor {
+			if r.platformInterface != nil && r.platformInterface.UsePlatformNeighborResolver() {
+				monitor.Start("initialize neighbor resolver")
+				resolver := newPlatformNeighborResolver(r.logger, r.platformInterface)
+				err := resolver.Start()
+				monitor.Finish()
+				if err != nil {
+					r.logger.Error(E.Cause(err, "start neighbor resolver"))
+				} else {
+					r.neighborResolver = resolver
+				}
+			} else {
+				monitor.Start("initialize neighbor resolver")
+				resolver, err := newNeighborResolver(r.logger, r.leaseFiles)
+				monitor.Finish()
+				if err != nil {
+					if err != os.ErrInvalid {
+						r.logger.Error(E.Cause(err, "create neighbor resolver"))
+					}
+				} else {
+					err = resolver.Start()
+					if err != nil {
+						r.logger.Error(E.Cause(err, "start neighbor resolver"))
+					} else {
+						r.neighborResolver = resolver
+					}
+				}
+			}
+		}
 	case adapter.StartStatePostStart:
 		for i, rule := range r.rules {
 			monitor.Start("initialize rule[", i, "]")
@@ -172,6 +218,13 @@ func (r *Router) Start(stage adapter.StartStage) error {
 func (r *Router) Close() error {
 	monitor := taskmonitor.New(r.logger, C.StopTimeout)
 	var err error
+	if r.neighborResolver != nil {
+		monitor.Start("close neighbor resolver")
+		err = E.Append(err, r.neighborResolver.Close(), func(closeErr error) error {
+			return E.Cause(closeErr, "close neighbor resolver")
+		})
+		monitor.Finish()
+	}
 	for i, rule := range r.rules {
 		monitor.Start("close rule[", i, "]")
 		err = E.Append(err, rule.Close(), func(err error) error {
@@ -186,6 +239,13 @@ func (r *Router) Close() error {
 		})
 		monitor.Finish()
 	}
+	if r.processSearcher != nil {
+		monitor.Start("close process searcher")
+		err = E.Append(err, r.processSearcher.Close(), func(err error) error {
+			return E.Cause(err, "close process searcher")
+		})
+		monitor.Finish()
+	}
 	return err
 }
 
@@ -206,6 +266,14 @@ func (r *Router) NeedFindProcess() bool {
 	return r.needFindProcess
 }
 
+func (r *Router) NeedFindNeighbor() bool {
+	return r.needFindNeighbor
+}
+
+func (r *Router) NeighborResolver() adapter.NeighborResolver {
+	return r.neighborResolver
+}
+
 func (r *Router) ResetNetwork() {
 	r.network.ResetNetwork()
 	r.dns.ResetNetwork()

route/rule/rule_default.go

@@ -260,6 +260,16 @@ func NewDefaultRule(ctx context.Context, logger log.ContextLogger, options optio
 		rule.items = append(rule.items, item)
 		rule.allItems = append(rule.allItems, item)
 	}
+	if len(options.SourceMACAddress) > 0 {
+		item := NewSourceMACAddressItem(options.SourceMACAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourceHostname) > 0 {
+		item := NewSourceHostnameItem(options.SourceHostname)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
 	if len(options.PreferredBy) > 0 {
 		item := NewPreferredByItem(ctx, options.PreferredBy)
 		rule.items = append(rule.items, item)

route/rule/rule_dns.go

@@ -261,6 +261,16 @@ func NewDefaultDNSRule(ctx context.Context, logger log.ContextLogger, options op
 		rule.items = append(rule.items, item)
 		rule.allItems = append(rule.allItems, item)
 	}
+	if len(options.SourceMACAddress) > 0 {
+		item := NewSourceMACAddressItem(options.SourceMACAddress)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
+	if len(options.SourceHostname) > 0 {
+		item := NewSourceHostnameItem(options.SourceHostname)
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
 	if len(options.RuleSet) > 0 {
 		//nolint:staticcheck
 		if options.Deprecated_RulesetIPCIDRMatchSource {

route/rule/rule_item_package_name.go

@@ -25,10 +25,15 @@ func NewPackageNameItem(packageNameList []string) *PackageNameItem {
 }
 
 func (r *PackageNameItem) Match(metadata *adapter.InboundContext) bool {
-	if metadata.ProcessInfo == nil || metadata.ProcessInfo.AndroidPackageName == "" {
+	if metadata.ProcessInfo == nil || len(metadata.ProcessInfo.AndroidPackageNames) == 0 {
 		return false
 	}
-	return r.packageMap[metadata.ProcessInfo.AndroidPackageName]
+	for _, packageName := range metadata.ProcessInfo.AndroidPackageNames {
+		if r.packageMap[packageName] {
+			return true
+		}
+	}
+	return false
 }
 
 func (r *PackageNameItem) String() string {

route/rule/rule_item_process_path.go

@@ -4,6 +4,7 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
 )
 
 var _ RuleItem = (*ProcessPathItem)(nil)
@@ -25,10 +26,20 @@ func NewProcessPathItem(processNameList []string) *ProcessPathItem {
 }
 
 func (r *ProcessPathItem) Match(metadata *adapter.InboundContext) bool {
-	if metadata.ProcessInfo == nil || metadata.ProcessInfo.ProcessPath == "" {
+	if metadata.ProcessInfo == nil {
 		return false
 	}
-	return r.processMap[metadata.ProcessInfo.ProcessPath]
+	if metadata.ProcessInfo.ProcessPath != "" && r.processMap[metadata.ProcessInfo.ProcessPath] {
+		return true
+	}
+	if C.IsAndroid {
+		for _, packageName := range metadata.ProcessInfo.AndroidPackageNames {
+			if r.processMap[packageName] {
+				return true
+			}
+		}
+	}
+	return false
 }
 
 func (r *ProcessPathItem) String() string {

route/rule/rule_item_rule_set.go

@@ -41,10 +41,12 @@ func (r *RuleSetItem) Start() error {
 }
 
 func (r *RuleSetItem) Match(metadata *adapter.InboundContext) bool {
-	metadata.IPCIDRMatchSource = r.ipCidrMatchSource
-	metadata.IPCIDRAcceptEmpty = r.ipCidrAcceptEmpty
 	for _, ruleSet := range r.setList {
-		if ruleSet.Match(metadata) {
+		nestedMetadata := *metadata
+		nestedMetadata.ResetRuleMatchCache()
+		nestedMetadata.IPCIDRMatchSource = r.ipCidrMatchSource
+		nestedMetadata.IPCIDRAcceptEmpty = r.ipCidrAcceptEmpty
+		if ruleSet.Match(&nestedMetadata) {
 			return true
 		}
 	}

route/rule/rule_item_source_hostname.go

@@ -0,0 +1,42 @@
+package rule
+
+import (
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+)
+
+var _ RuleItem = (*SourceHostnameItem)(nil)
+
+type SourceHostnameItem struct {
+	hostnames   []string
+	hostnameMap map[string]bool
+}
+
+func NewSourceHostnameItem(hostnameList []string) *SourceHostnameItem {
+	rule := &SourceHostnameItem{
+		hostnames:   hostnameList,
+		hostnameMap: make(map[string]bool),
+	}
+	for _, hostname := range hostnameList {
+		rule.hostnameMap[hostname] = true
+	}
+	return rule
+}
+
+func (r *SourceHostnameItem) Match(metadata *adapter.InboundContext) bool {
+	if metadata.SourceHostname == "" {
+		return false
+	}
+	return r.hostnameMap[metadata.SourceHostname]
+}
+
+func (r *SourceHostnameItem) String() string {
+	var description string
+	if len(r.hostnames) == 1 {
+		description = "source_hostname=" + r.hostnames[0]
+	} else {
+		description = "source_hostname=[" + strings.Join(r.hostnames, " ") + "]"
+	}
+	return description
+}

route/rule/rule_item_source_mac_address.go

@@ -0,0 +1,48 @@
+package rule
+
+import (
+	"net"
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+)
+
+var _ RuleItem = (*SourceMACAddressItem)(nil)
+
+type SourceMACAddressItem struct {
+	addresses  []string
+	addressMap map[string]bool
+}
+
+func NewSourceMACAddressItem(addressList []string) *SourceMACAddressItem {
+	rule := &SourceMACAddressItem{
+		addresses:  addressList,
+		addressMap: make(map[string]bool),
+	}
+	for _, address := range addressList {
+		parsed, err := net.ParseMAC(address)
+		if err == nil {
+			rule.addressMap[parsed.String()] = true
+		} else {
+			rule.addressMap[address] = true
+		}
+	}
+	return rule
+}
+
+func (r *SourceMACAddressItem) Match(metadata *adapter.InboundContext) bool {
+	if metadata.SourceMACAddress == nil {
+		return false
+	}
+	return r.addressMap[metadata.SourceMACAddress.String()]
+}
+
+func (r *SourceMACAddressItem) String() string {
+	var description string
+	if len(r.addresses) == 1 {
+		description = "source_mac_address=" + r.addresses[0]
+	} else {
+		description = "source_mac_address=[" + strings.Join(r.addresses, " ") + "]"
+	}
+	return description
+}

route/rule/rule_set_local.go

@@ -203,7 +203,9 @@ func (s *LocalRuleSet) Close() error {
 
 func (s *LocalRuleSet) Match(metadata *adapter.InboundContext) bool {
 	for _, rule := range s.rules {
-		if rule.Match(metadata) {
+		nestedMetadata := *metadata
+		nestedMetadata.ResetRuleMatchCache()
+		if rule.Match(&nestedMetadata) {
 			return true
 		}
 	}

route/rule/rule_set_remote.go

@@ -323,7 +323,9 @@ func (s *RemoteRuleSet) Close() error {
 
 func (s *RemoteRuleSet) Match(metadata *adapter.InboundContext) bool {
 	for _, rule := range s.rules {
-		if rule.Match(metadata) {
+		nestedMetadata := *metadata
+		nestedMetadata.ResetRuleMatchCache()
+		if rule.Match(&nestedMetadata) {
 			return true
 		}
 	}

route/rule_conds.go

@@ -45,6 +45,14 @@ func isProcessDNSRule(rule option.DefaultDNSRule) bool {
 	return len(rule.ProcessName) > 0 || len(rule.ProcessPath) > 0 || len(rule.ProcessPathRegex) > 0 || len(rule.PackageName) > 0 || len(rule.User) > 0 || len(rule.UserID) > 0
 }
 
+func isNeighborRule(rule option.DefaultRule) bool {
+	return len(rule.SourceMACAddress) > 0 || len(rule.SourceHostname) > 0
+}
+
+func isNeighborDNSRule(rule option.DefaultDNSRule) bool {
+	return len(rule.SourceMACAddress) > 0 || len(rule.SourceHostname) > 0
+}
+
 func isWIFIRule(rule option.DefaultRule) bool {
 	return len(rule.WIFISSID) > 0 || len(rule.WIFIBSSID) > 0
 }

test/go.mod

@@ -10,34 +10,35 @@ require (
 	github.com/docker/docker v27.3.1+incompatible
 	github.com/docker/go-connections v0.5.0
 	github.com/gofrs/uuid/v5 v5.4.0
-	github.com/sagernet/quic-go v0.59.0-sing-box-mod.2
-	github.com/sagernet/sing v0.8.0-beta.16
-	github.com/sagernet/sing-quic v0.6.0-beta.11
+	github.com/sagernet/quic-go v0.59.0-sing-box-mod.4
+	github.com/sagernet/sing v0.8.3-0.20260315153529-ed51f65fbfde
+	github.com/sagernet/sing-quic v0.6.0
 	github.com/sagernet/sing-shadowsocks v0.2.8
 	github.com/sagernet/sing-shadowsocks2 v0.2.1
 	github.com/spyzhov/ajson v0.9.4
 	github.com/stretchr/testify v1.11.1
 	go.uber.org/goleak v1.3.0
-	golang.org/x/net v0.48.0
+	golang.org/x/net v0.50.0
 )
 
 require (
-	filippo.io/edwards25519 v1.1.0 // indirect
+	filippo.io/edwards25519 v1.1.1 // indirect
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/akutz/memconn v0.1.0 // indirect
 	github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa // indirect
 	github.com/andybalholm/brotli v1.1.0 // indirect
-	github.com/anthropics/anthropic-sdk-go v1.19.0 // indirect
+	github.com/anthropics/anthropic-sdk-go v1.26.0 // indirect
 	github.com/anytls/sing-anytls v0.0.11 // indirect
-	github.com/caddyserver/certmagic v0.25.0 // indirect
-	github.com/caddyserver/zerossl v0.1.3 // indirect
+	github.com/caddyserver/certmagic v0.25.2 // indirect
+	github.com/caddyserver/zerossl v0.1.5 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/coder/websocket v1.8.14 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/coreos/go-iptables v0.7.1-0.20240112124308-65c67c9f46e6 // indirect
 	github.com/cretz/bine v0.2.0 // indirect
 	github.com/database64128/netx-go v0.1.1 // indirect
-	github.com/database64128/tfo-go/v2 v2.3.1 // indirect
+	github.com/database64128/tfo-go/v2 v2.3.2 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dblohm7/wingoes v0.0.0-20240119213807-a09d6be7affa // indirect
 	github.com/distribution/reference v0.5.0 // indirect
@@ -48,7 +49,7 @@ require (
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
 	github.com/gaissmai/bart v0.18.0 // indirect
-	github.com/go-chi/chi/v5 v5.2.3 // indirect
+	github.com/go-chi/chi/v5 v5.2.5 // indirect
 	github.com/go-chi/render v1.0.3 // indirect
 	github.com/go-json-experiment/json v0.0.0-20250813024750-ebf49471dced // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
@@ -56,7 +57,7 @@ require (
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
-	github.com/godbus/dbus/v5 v5.2.1 // indirect
+	github.com/godbus/dbus/v5 v5.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/btree v1.1.3 // indirect
@@ -65,26 +66,26 @@ require (
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/yamux v0.1.2 // indirect
 	github.com/hdevalence/ed25519consensus v0.2.0 // indirect
-	github.com/insomniacslk/dhcp v0.0.0-20251020182700-175e84fbb167 // indirect
+	github.com/insomniacslk/dhcp v0.0.0-20260220084031-5adc3eb26f91 // indirect
 	github.com/jsimonetti/rtnetlink v1.4.0 // indirect
 	github.com/keybase/go-keychain v0.0.1 // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/libdns/acmedns v0.5.0 // indirect
-	github.com/libdns/alidns v1.0.6-beta.3 // indirect
+	github.com/libdns/alidns v1.0.6 // indirect
 	github.com/libdns/cloudflare v0.2.2 // indirect
 	github.com/libdns/libdns v1.1.1 // indirect
 	github.com/logrusorgru/aurora v2.0.3+incompatible // indirect
-	github.com/mdlayher/netlink v1.7.3-0.20250113171957-fbb4dce95f42 // indirect
+	github.com/mdlayher/netlink v1.9.0 // indirect
 	github.com/mdlayher/socket v0.5.1 // indirect
 	github.com/metacubex/utls v1.8.4 // indirect
-	github.com/mholt/acmez/v3 v3.1.4 // indirect
-	github.com/miekg/dns v1.1.69 // indirect
+	github.com/mholt/acmez/v3 v3.1.6 // indirect
+	github.com/miekg/dns v1.1.72 // indirect
 	github.com/mitchellh/go-ps v1.0.0 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/term v0.5.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/openai/openai-go/v3 v3.15.0 // indirect
+	github.com/openai/openai-go/v3 v3.26.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
@@ -96,41 +97,48 @@ require (
 	github.com/safchain/ethtool v0.3.0 // indirect
 	github.com/sagernet/bbolt v0.0.0-20231014093535-ea5cb2fe9f0a // indirect
 	github.com/sagernet/cors v1.2.1 // indirect
-	github.com/sagernet/cronet-go v0.0.0-20260117110918-dc1cda1fe287 // indirect
-	github.com/sagernet/cronet-go/all v0.0.0-20260117110918-dc1cda1fe287 // indirect
-	github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260117110516-f21660bef13f // indirect
-	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260117110516-f21660bef13f // indirect
+	github.com/sagernet/cronet-go v0.0.0-20260309100020-c128886ff3fc // indirect
+	github.com/sagernet/cronet-go/all v0.0.0-20260309100020-c128886ff3fc // indirect
+	github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
+	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260309101654-0cbdcfddded9 // indirect
 	github.com/sagernet/fswatch v0.1.1 // indirect
 	github.com/sagernet/gvisor v0.0.0-20250822052253-5558536cf237 // indirect
 	github.com/sagernet/netlink v0.0.0-20240612041022-b9a21c07ac6a // indirect
 	github.com/sagernet/nftables v0.3.0-beta.4 // indirect
 	github.com/sagernet/sing-mux v0.3.4 // indirect
 	github.com/sagernet/sing-shadowtls v0.2.1-0.20250503051639-fcd445d33c11 // indirect
-	github.com/sagernet/sing-tun v0.8.0-beta.17 // indirect
+	github.com/sagernet/sing-tun v0.8.7-0.20260323120017-8eb4e8acfc2d // indirect
 	github.com/sagernet/sing-vmess v0.2.8-0.20250909125414-3aed155119a1 // indirect
 	github.com/sagernet/smux v1.5.50-sing-box-mod.1 // indirect
-	github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.6 // indirect
-	github.com/sagernet/wireguard-go v0.0.2-beta.1.0.20250917110311-16510ac47288 // indirect
+	github.com/sagernet/tailscale v1.92.4-sing-box-1.13-mod.7 // indirect
+	github.com/sagernet/wireguard-go v0.0.2-beta.1.0.20260224074747-506b7631853c // indirect
 	github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854 // indirect
 	github.com/tailscale/certstore v0.1.1-0.20231202035212-d3fa0460f47e // indirect
 	github.com/tailscale/go-winio v0.0.0-20231025203758-c4f33415bf55 // indirect
@@ -149,29 +157,29 @@ require (
 	github.com/zeebo/blake3 v0.2.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0 // indirect
-	go.opentelemetry.io/otel v1.38.0 // indirect
+	go.opentelemetry.io/otel v1.39.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.31.0 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.1 // indirect
 	go.uber.org/zap/exp v0.3.0 // indirect
 	go4.org/mem v0.0.0-20240501181205-ae6ca9944745 // indirect
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba // indirect
-	golang.org/x/crypto v0.46.0 // indirect
+	golang.org/x/crypto v0.48.0 // indirect
 	golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93 // indirect
-	golang.org/x/mod v0.31.0 // indirect
-	golang.org/x/oauth2 v0.32.0 // indirect
+	golang.org/x/mod v0.33.0 // indirect
+	golang.org/x/oauth2 v0.34.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.39.0 // indirect
-	golang.org/x/term v0.38.0 // indirect
-	golang.org/x/text v0.32.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/term v0.40.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
 	golang.org/x/time v0.11.0 // indirect
-	golang.org/x/tools v0.40.0 // indirect
+	golang.org/x/tools v0.42.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	golang.zx2c4.com/wireguard/windows v0.5.3 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20251022142026-3a174f9686a8 // indirect
-	google.golang.org/grpc v1.77.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217 // indirect
+	google.golang.org/grpc v1.79.1 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	gotest.tools/v3 v3.5.1 // indirect

test/go.sum

@@ -1,5 +1,7 @@
-filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
-filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+code.pfad.fr/check v1.1.0 h1:GWvjdzhSEgHvEHe2uJujDcpmZoySKuHQNrZMfzfO0bE=
+code.pfad.fr/check v1.1.0/go.mod h1:NiUH13DtYsb7xp5wll0U4SXx7KhXQVCtRgdC96IPfoM=
+filippo.io/edwards25519 v1.1.1 h1:YpjwWWlNmGIDyXOn8zLzqiD+9TyIlPhGFG96P39uBpw=
+filippo.io/edwards25519 v1.1.1/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
@@ -12,16 +14,18 @@ github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa h1:LHTHcTQiSGT7V
 github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa/go.mod h1:cEWa1LVoE5KvSD9ONXsZrj0z6KqySlCCNKHlLzbqAt4=
 github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M=
 github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
-github.com/anthropics/anthropic-sdk-go v1.19.0 h1:mO6E+ffSzLRvR/YUH9KJC0uGw0uV8GjISIuzem//3KE=
-github.com/anthropics/anthropic-sdk-go v1.19.0/go.mod h1:WTz31rIUHUHqai2UslPpw5CwXrQP3geYBioRV4WOLvE=
+github.com/anthropics/anthropic-sdk-go v1.26.0 h1:oUTzFaUpAevfuELAP1sjL6CQJ9HHAfT7CoSYSac11PY=
+github.com/anthropics/anthropic-sdk-go v1.26.0/go.mod h1:qUKmaW+uuPB64iy1l+4kOSvaLqPXnHTTBKH6RVZ7q5Q=
 github.com/anytls/sing-anytls v0.0.11 h1:w8e9Uj1oP3m4zxkyZDewPk0EcQbvVxb7Nn+rapEx4fc=
 github.com/anytls/sing-anytls v0.0.11/go.mod h1:7rjN6IukwysmdusYsrV51Fgu1uW6vsrdd6ctjnEAln8=
-github.com/caddyserver/certmagic v0.25.0 h1:VMleO/XA48gEWes5l+Fh6tRWo9bHkhwAEhx63i+F5ic=
-github.com/caddyserver/certmagic v0.25.0/go.mod h1:m9yB7Mud24OQbPHOiipAoyKPn9pKHhpSJxXR1jydBxA=
-github.com/caddyserver/zerossl v0.1.3 h1:onS+pxp3M8HnHpN5MMbOMyNjmTheJyWRaZYwn+YTAyA=
-github.com/caddyserver/zerossl v0.1.3/go.mod h1:CxA0acn7oEGO6//4rtrRjYgEoa4MFw/XofZnrYwGqG4=
+github.com/caddyserver/certmagic v0.25.2 h1:D7xcS7ggX/WEY54x0czj7ioTkmDWKIgxtIi2OcQclUc=
+github.com/caddyserver/certmagic v0.25.2/go.mod h1:llW/CvsNmza8S6hmsuggsZeiX+uS27dkqY27wDIuBWg=
+github.com/caddyserver/zerossl v0.1.5 h1:dkvOjBAEEtY6LIGAHei7sw2UgqSD6TrWweXpV7lvEvE=
+github.com/caddyserver/zerossl v0.1.5/go.mod h1:CxA0acn7oEGO6//4rtrRjYgEoa4MFw/XofZnrYwGqG4=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cilium/ebpf v0.15.0 h1:7NxJhNiBT3NG8pZJ3c+yfrVdHY8ScgKD27sScgjLMMk=
 github.com/cilium/ebpf v0.15.0/go.mod h1:DHp1WyrLeiBh19Cf/tfiSMhqheEiK8fXFZ4No0P1Hso=
 github.com/coder/websocket v1.8.14 h1:9L0p0iKiNOibykf283eHkKUHHrpG7f65OE3BhhO7v9g=
@@ -34,8 +38,8 @@ github.com/cretz/bine v0.2.0 h1:8GiDRGlTgz+o8H9DSnsl+5MeBK4HsExxgl6WgzOCuZo=
 github.com/cretz/bine v0.2.0/go.mod h1:WU4o9QR9wWp8AVKtTM1XD5vUHkEqnf2vVSo6dBqbetI=
 github.com/database64128/netx-go v0.1.1 h1:dT5LG7Gs7zFZBthFBbzWE6K8wAHjSNAaK7wCYZT7NzM=
 github.com/database64128/netx-go v0.1.1/go.mod h1:LNlYVipaYkQArRFDNNJ02VkNV+My9A5XR/IGS7sIBQc=
-github.com/database64128/tfo-go/v2 v2.3.1 h1:EGE+ELd5/AQ0X6YBlQ9RgKs8+kciNhgN3d8lRvfEJQw=
-github.com/database64128/tfo-go/v2 v2.3.1/go.mod h1:k9wcpg/8i5zenspBkc9jUEYehpZZccBnCElzOJB++bU=
+github.com/database64128/tfo-go/v2 v2.3.2 h1:UhZMKiMq3swZGUiETkLBDzQnZBPSAeBMClpJGlnJ5Fw=
+github.com/database64128/tfo-go/v2 v2.3.2/go.mod h1:GC3uB5oa4beGpCUbRb2ZOWP73bJJFmMyAVgQSO7r724=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
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@@ -43,6 +47,8 @@ github.com/dblohm7/wingoes v0.0.0-20240119213807-a09d6be7affa h1:h8TfIT1xc8FWbww
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@@ -312,20 +338,20 @@ go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ
 go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0 h1:UP6IpuHFkUgOQL9FFQFrZ+5LiwhhYRbi7VZSIx6Nj5s=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.56.0/go.mod h1:qxuZLtbq5QDtdeSHsS7bcf6EH6uO6jUAgk764zd3rhM=
-go.opentelemetry.io/otel v1.38.0 h1:RkfdswUDRimDg0m2Az18RKOsnI8UDzppJAtj01/Ymk8=
-go.opentelemetry.io/otel v1.38.0/go.mod h1:zcmtmQ1+YmQM9wrNsTGV/q/uyusom3P8RxwExxkZhjM=
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 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.31.0 h1:K0XaT3DwHAcV4nKLzcQvwAgSyisUghWoY20I7huthMk=
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@@ -344,26 +370,26 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
-golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
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@@ -379,24 +405,24 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -407,17 +433,19 @@ golang.zx2c4.com/wireguard/windows v0.5.3 h1:On6j2Rpn3OEMXqBq00QEDC7bWSZrPIHKIus
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