diff --git a/.github/CRONET_GO_VERSION b/.github/CRONET_GO_VERSION
index a703eff56..52565262a 100644
--- a/.github/CRONET_GO_VERSION
+++ b/.github/CRONET_GO_VERSION
@@ -1 +1 @@
-abd78bb191a815236485ad929716845ffb41465a
+34ec1a064c64f274c4e70bf7a9c7de4bb12331f6
diff --git a/adapter/connections.go b/adapter/connections.go
index 0682d05a0..a0b9c0ef8 100644
--- a/adapter/connections.go
+++ b/adapter/connections.go
@@ -9,6 +9,10 @@ import (
 
 type ConnectionManager interface {
 	Lifecycle
+	Count() int
+	CloseAll()
+	TrackConn(conn net.Conn) net.Conn
+	TrackPacketConn(conn net.PacketConn) net.PacketConn
 	NewConnection(ctx context.Context, this N.Dialer, conn net.Conn, metadata InboundContext, onClose N.CloseHandlerFunc)
 	NewPacketConnection(ctx context.Context, this N.Dialer, conn N.PacketConn, metadata InboundContext, onClose N.CloseHandlerFunc)
 }
diff --git a/box.go b/box.go
index 7885b0d41..fe116b317 100644
--- a/box.go
+++ b/box.go
@@ -125,7 +125,10 @@ func New(options Options) (*Box, error) {
 
 	ctx = pause.WithDefaultManager(ctx)
 	experimentalOptions := common.PtrValueOrDefault(options.Experimental)
-	applyDebugOptions(common.PtrValueOrDefault(experimentalOptions.Debug))
+	err := applyDebugOptions(common.PtrValueOrDefault(experimentalOptions.Debug))
+	if err != nil {
+		return nil, err
+	}
 	var needCacheFile bool
 	var needClashAPI bool
 	var needV2RayAPI bool
diff --git a/cmd/internal/build_libbox/main.go b/cmd/internal/build_libbox/main.go
index e9cbb1ef3..c12821693 100644
--- a/cmd/internal/build_libbox/main.go
+++ b/cmd/internal/build_libbox/main.go
@@ -63,7 +63,7 @@ func init() {
 	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -X internal/godebug.defaultGODEBUG=multipathtcp=0 -s -w -buildid=  -checklinkname=0")
 	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -X internal/godebug.defaultGODEBUG=multipathtcp=0 -checklinkname=0")
 
-	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_naive_outbound", "with_clash_api", "with_conntrack", "badlinkname", "tfogo_checklinkname0")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_naive_outbound", "with_clash_api", "badlinkname", "tfogo_checklinkname0")
 	darwinTags = append(darwinTags, "with_dhcp", "grpcnotrace")
 	// memcTags = append(memcTags, "with_tailscale")
 	sharedTags = append(sharedTags, "with_tailscale", "ts_omit_logtail", "ts_omit_ssh", "ts_omit_drive", "ts_omit_taildrop", "ts_omit_webclient", "ts_omit_doctor", "ts_omit_capture", "ts_omit_kube", "ts_omit_aws", "ts_omit_synology", "ts_omit_bird")
diff --git a/common/conntrack/conn.go b/common/conntrack/conn.go
deleted file mode 100644
index 4773d6a82..000000000
--- a/common/conntrack/conn.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package conntrack
-
-import (
-	"io"
-	"net"
-
-	"github.com/sagernet/sing/common/x/list"
-)
-
-type Conn struct {
-	net.Conn
-	element *list.Element[io.Closer]
-}
-
-func NewConn(conn net.Conn) (net.Conn, error) {
-	connAccess.Lock()
-	element := openConnection.PushBack(conn)
-	connAccess.Unlock()
-	if KillerEnabled {
-		err := KillerCheck()
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-	}
-	return &Conn{
-		Conn:    conn,
-		element: element,
-	}, nil
-}
-
-func (c *Conn) Close() error {
-	if c.element.Value != nil {
-		connAccess.Lock()
-		if c.element.Value != nil {
-			openConnection.Remove(c.element)
-			c.element.Value = nil
-		}
-		connAccess.Unlock()
-	}
-	return c.Conn.Close()
-}
-
-func (c *Conn) Upstream() any {
-	return c.Conn
-}
-
-func (c *Conn) ReaderReplaceable() bool {
-	return true
-}
-
-func (c *Conn) WriterReplaceable() bool {
-	return true
-}
diff --git a/common/conntrack/killer.go b/common/conntrack/killer.go
deleted file mode 100644
index e0a71e5cb..000000000
--- a/common/conntrack/killer.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package conntrack
-
-import (
-	runtimeDebug "runtime/debug"
-	"time"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/memory"
-)
-
-var (
-	KillerEnabled   bool
-	MemoryLimit     uint64
-	killerLastCheck time.Time
-)
-
-func KillerCheck() error {
-	if !KillerEnabled {
-		return nil
-	}
-	nowTime := time.Now()
-	if nowTime.Sub(killerLastCheck) < 3*time.Second {
-		return nil
-	}
-	killerLastCheck = nowTime
-	if memory.Total() > MemoryLimit {
-		Close()
-		go func() {
-			time.Sleep(time.Second)
-			runtimeDebug.FreeOSMemory()
-		}()
-		return E.New("out of memory")
-	}
-	return nil
-}
diff --git a/common/conntrack/packet_conn.go b/common/conntrack/packet_conn.go
deleted file mode 100644
index c7274637e..000000000
--- a/common/conntrack/packet_conn.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package conntrack
-
-import (
-	"io"
-	"net"
-
-	"github.com/sagernet/sing/common/bufio"
-	"github.com/sagernet/sing/common/x/list"
-)
-
-type PacketConn struct {
-	net.PacketConn
-	element *list.Element[io.Closer]
-}
-
-func NewPacketConn(conn net.PacketConn) (net.PacketConn, error) {
-	connAccess.Lock()
-	element := openConnection.PushBack(conn)
-	connAccess.Unlock()
-	if KillerEnabled {
-		err := KillerCheck()
-		if err != nil {
-			conn.Close()
-			return nil, err
-		}
-	}
-	return &PacketConn{
-		PacketConn: conn,
-		element:    element,
-	}, nil
-}
-
-func (c *PacketConn) Close() error {
-	if c.element.Value != nil {
-		connAccess.Lock()
-		if c.element.Value != nil {
-			openConnection.Remove(c.element)
-			c.element.Value = nil
-		}
-		connAccess.Unlock()
-	}
-	return c.PacketConn.Close()
-}
-
-func (c *PacketConn) Upstream() any {
-	return bufio.NewPacketConn(c.PacketConn)
-}
-
-func (c *PacketConn) ReaderReplaceable() bool {
-	return true
-}
-
-func (c *PacketConn) WriterReplaceable() bool {
-	return true
-}
diff --git a/common/conntrack/track.go b/common/conntrack/track.go
deleted file mode 100644
index 2c3e328b3..000000000
--- a/common/conntrack/track.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package conntrack
-
-import (
-	"io"
-	"sync"
-
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/x/list"
-)
-
-var (
-	connAccess     sync.RWMutex
-	openConnection list.List[io.Closer]
-)
-
-func Count() int {
-	if !Enabled {
-		return 0
-	}
-	return openConnection.Len()
-}
-
-func List() []io.Closer {
-	if !Enabled {
-		return nil
-	}
-	connAccess.RLock()
-	defer connAccess.RUnlock()
-	connList := make([]io.Closer, 0, openConnection.Len())
-	for element := openConnection.Front(); element != nil; element = element.Next() {
-		connList = append(connList, element.Value)
-	}
-	return connList
-}
-
-func Close() {
-	if !Enabled {
-		return
-	}
-	connAccess.Lock()
-	defer connAccess.Unlock()
-	for element := openConnection.Front(); element != nil; element = element.Next() {
-		common.Close(element.Value)
-		element.Value = nil
-	}
-	openConnection.Init()
-}
diff --git a/common/conntrack/track_disable.go b/common/conntrack/track_disable.go
deleted file mode 100644
index 174d8b6eb..000000000
--- a/common/conntrack/track_disable.go
+++ /dev/null
@@ -1,5 +0,0 @@
-//go:build !with_conntrack
-
-package conntrack
-
-const Enabled = false
diff --git a/common/conntrack/track_enable.go b/common/conntrack/track_enable.go
deleted file mode 100644
index a4bf9986a..000000000
--- a/common/conntrack/track_enable.go
+++ /dev/null
@@ -1,5 +0,0 @@
-//go:build with_conntrack
-
-package conntrack
-
-const Enabled = true
diff --git a/common/dialer/default.go b/common/dialer/default.go
index 3ab2e05a0..ad37834c0 100644
--- a/common/dialer/default.go
+++ b/common/dialer/default.go
@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/conntrack"
 	"github.com/sagernet/sing-box/common/listener"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
@@ -37,6 +36,7 @@ type DefaultDialer struct {
 	udpAddr4               string
 	udpAddr6               string
 	netns                  string
+	connectionManager      adapter.ConnectionManager
 	networkManager         adapter.NetworkManager
 	networkStrategy        *C.NetworkStrategy
 	defaultNetworkStrategy bool
@@ -47,6 +47,7 @@ type DefaultDialer struct {
 }
 
 func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDialer, error) {
+	connectionManager := service.FromContext[adapter.ConnectionManager](ctx)
 	networkManager := service.FromContext[adapter.NetworkManager](ctx)
 	platformInterface := service.FromContext[adapter.PlatformInterface](ctx)
 
@@ -206,6 +207,7 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		udpAddr4:               udpAddr4,
 		udpAddr6:               udpAddr6,
 		netns:                  options.NetNs,
+		connectionManager:      connectionManager,
 		networkManager:         networkManager,
 		networkStrategy:        networkStrategy,
 		defaultNetworkStrategy: defaultNetworkStrategy,
@@ -238,7 +240,7 @@ func (d *DefaultDialer) DialContext(ctx context.Context, network string, address
 		return nil, E.New("domain not resolved")
 	}
 	if d.networkStrategy == nil {
-		return trackConn(listener.ListenNetworkNamespace[net.Conn](d.netns, func() (net.Conn, error) {
+		return d.trackConn(listener.ListenNetworkNamespace[net.Conn](d.netns, func() (net.Conn, error) {
 			switch N.NetworkName(network) {
 			case N.NetworkUDP:
 				if !address.IsIPv6() {
@@ -303,12 +305,12 @@ func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network strin
 	if !fastFallback && !isPrimary {
 		d.networkLastFallback.Store(time.Now())
 	}
-	return trackConn(conn, nil)
+	return d.trackConn(conn, nil)
 }
 
 func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	if d.networkStrategy == nil {
-		return trackPacketConn(listener.ListenNetworkNamespace[net.PacketConn](d.netns, func() (net.PacketConn, error) {
+		return d.trackPacketConn(listener.ListenNetworkNamespace[net.PacketConn](d.netns, func() (net.PacketConn, error) {
 			if destination.IsIPv6() {
 				return d.udpListener.ListenPacket(ctx, N.NetworkUDP, d.udpAddr6)
 			} else if destination.IsIPv4() && !destination.Addr.IsUnspecified() {
@@ -360,23 +362,23 @@ func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destina
 			return nil, err
 		}
 	}
-	return trackPacketConn(packetConn, nil)
+	return d.trackPacketConn(packetConn, nil)
 }
 
 func (d *DefaultDialer) WireGuardControl() control.Func {
 	return d.udpListener.Control
 }
 
-func trackConn(conn net.Conn, err error) (net.Conn, error) {
-	if !conntrack.Enabled || err != nil {
+func (d *DefaultDialer) trackConn(conn net.Conn, err error) (net.Conn, error) {
+	if d.connectionManager == nil || err != nil {
 		return conn, err
 	}
-	return conntrack.NewConn(conn)
+	return d.connectionManager.TrackConn(conn), nil
 }
 
-func trackPacketConn(conn net.PacketConn, err error) (net.PacketConn, error) {
-	if !conntrack.Enabled || err != nil {
+func (d *DefaultDialer) trackPacketConn(conn net.PacketConn, err error) (net.PacketConn, error) {
+	if d.connectionManager == nil || err != nil {
 		return conn, err
 	}
-	return conntrack.NewPacketConn(conn)
+	return d.connectionManager.TrackPacketConn(conn), nil
 }
diff --git a/constant/proxy.go b/constant/proxy.go
index a51936234..4130c631a 100644
--- a/constant/proxy.go
+++ b/constant/proxy.go
@@ -30,6 +30,7 @@ const (
 	TypeSSMAPI       = "ssm-api"
 	TypeCCM          = "ccm"
 	TypeOCM          = "ocm"
+	TypeOOMKiller    = "oom-killer"
 )
 
 const (
diff --git a/daemon/instance.go b/daemon/instance.go
index 5947452f9..4ed741822 100644
--- a/daemon/instance.go
+++ b/daemon/instance.go
@@ -7,10 +7,12 @@ import (
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/urltest"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/include"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/json"
 	"github.com/sagernet/sing/service"
@@ -21,6 +23,7 @@ type Instance struct {
 	ctx                   context.Context
 	cancel                context.CancelFunc
 	instance              *box.Box
+	connectionManager     adapter.ConnectionManager
 	clashServer           adapter.ClashServer
 	cacheFile             adapter.CacheFile
 	pauseManager          pause.Manager
@@ -84,6 +87,15 @@ func (s *StartedService) newInstance(profileContent string, overrideOptions *Ove
 			}
 		}
 	}
+	if s.oomKiller && C.IsIos {
+		if !common.Any(options.Services, func(it option.Service) bool {
+			return it.Type == C.TypeOOMKiller
+		}) {
+			options.Services = append(options.Services, option.Service{
+				Type: C.TypeOOMKiller,
+			})
+		}
+	}
 	urlTestHistoryStorage := urltest.NewHistoryStorage()
 	ctx = service.ContextWithPtr(ctx, urlTestHistoryStorage)
 	i := &Instance{
@@ -101,6 +113,7 @@ func (s *StartedService) newInstance(profileContent string, overrideOptions *Ove
 		return nil, err
 	}
 	i.instance = boxInstance
+	i.connectionManager = service.FromContext[adapter.ConnectionManager](ctx)
 	i.clashServer = service.FromContext[adapter.ClashServer](ctx)
 	i.pauseManager = service.FromContext[pause.Manager](ctx)
 	i.cacheFile = service.FromContext[adapter.CacheFile](ctx)
diff --git a/daemon/started_service.go b/daemon/started_service.go
index 7c6fa9457..5e677f7ac 100644
--- a/daemon/started_service.go
+++ b/daemon/started_service.go
@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/conntrack"
 	"github.com/sagernet/sing-box/common/urltest"
 	"github.com/sagernet/sing-box/experimental/clashapi"
 	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
@@ -36,6 +35,7 @@ type StartedService struct {
 	handler     PlatformHandler
 	debug       bool
 	logMaxLines int
+	oomKiller   bool
 	// workingDirectory string
 	// tempDirectory    string
 	// userID           int
@@ -67,6 +67,7 @@ type ServiceOptions struct {
 	Handler     PlatformHandler
 	Debug       bool
 	LogMaxLines int
+	OOMKiller   bool
 	// WorkingDirectory   string
 	// TempDirectory      string
 	// UserID             int
@@ -81,6 +82,7 @@ func NewStartedService(options ServiceOptions) *StartedService {
 		handler:     options.Handler,
 		debug:       options.Debug,
 		logMaxLines: options.LogMaxLines,
+		oomKiller:   options.OOMKiller,
 		// workingDirectory: options.WorkingDirectory,
 		// tempDirectory:    options.TempDirectory,
 		// userID:           options.UserID,
@@ -409,10 +411,12 @@ func (s *StartedService) readStatus() *Status {
 	var status Status
 	status.Memory = memory.Inuse()
 	status.Goroutines = int32(runtime.NumGoroutine())
-	status.ConnectionsOut = int32(conntrack.Count())
 	s.serviceAccess.RLock()
 	nowService := s.instance
 	s.serviceAccess.RUnlock()
+	if nowService != nil && nowService.connectionManager != nil {
+		status.ConnectionsOut = int32(nowService.connectionManager.Count())
+	}
 	if nowService != nil {
 		if clashServer := nowService.clashServer; clashServer != nil {
 			status.TrafficAvailable = true
@@ -993,7 +997,12 @@ func (s *StartedService) CloseConnection(ctx context.Context, request *CloseConn
 }
 
 func (s *StartedService) CloseAllConnections(ctx context.Context, empty *emptypb.Empty) (*emptypb.Empty, error) {
-	conntrack.Close()
+	s.serviceAccess.RLock()
+	nowService := s.instance
+	s.serviceAccess.RUnlock()
+	if nowService != nil && nowService.connectionManager != nil {
+		nowService.connectionManager.CloseAll()
+	}
 	return &emptypb.Empty{}, nil
 }
 
diff --git a/debug.go b/debug.go
index 1726c10e9..f620172be 100644
--- a/debug.go
+++ b/debug.go
@@ -3,11 +3,11 @@ package box
 import (
 	"runtime/debug"
 
-	"github.com/sagernet/sing-box/common/conntrack"
 	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
 )
 
-func applyDebugOptions(options option.DebugOptions) {
+func applyDebugOptions(options option.DebugOptions) error {
 	applyDebugListenOption(options)
 	if options.GCPercent != nil {
 		debug.SetGCPercent(*options.GCPercent)
@@ -26,9 +26,9 @@ func applyDebugOptions(options option.DebugOptions) {
 	}
 	if options.MemoryLimit.Value() != 0 {
 		debug.SetMemoryLimit(int64(float64(options.MemoryLimit.Value()) / 1.5))
-		conntrack.MemoryLimit = options.MemoryLimit.Value()
 	}
 	if options.OOMKiller != nil {
-		conntrack.KillerEnabled = *options.OOMKiller
+		return E.New("legacy oom_killer in debug options is removed, use oom-killer service instead")
 	}
+	return nil
 }
diff --git a/experimental/libbox/command_server.go b/experimental/libbox/command_server.go
index e33002816..1c2412b69 100644
--- a/experimental/libbox/command_server.go
+++ b/experimental/libbox/command_server.go
@@ -60,6 +60,7 @@ func NewCommandServer(handler CommandServerHandler, platformInterface PlatformIn
 		Handler:     (*platformHandler)(server),
 		Debug:       sDebug,
 		LogMaxLines: sLogMaxLines,
+		OOMKiller:   memoryLimitEnabled,
 		// WorkingDirectory: sWorkingPath,
 		// TempDirectory:    sTempPath,
 		// UserID:           sUserID,
diff --git a/experimental/libbox/ffi.json b/experimental/libbox/ffi.json
index 283338712..81fae27da 100644
--- a/experimental/libbox/ffi.json
+++ b/experimental/libbox/ffi.json
@@ -29,7 +29,6 @@
           "with_utls",
           "with_naive_outbound",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",
@@ -59,7 +58,6 @@
           "with_wireguard",
           "with_utls",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",
@@ -90,7 +88,6 @@
           "with_utls",
           "with_naive_outbound",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_dhcp",
@@ -134,7 +131,6 @@
           "with_naive_outbound",
           "with_purego",
           "with_clash_api",
-          "with_conntrack",
           "badlinkname",
           "tfogo_checklinkname0",
           "with_tailscale",
diff --git a/experimental/libbox/memory.go b/experimental/libbox/memory.go
index b10c67014..b0b87f73f 100644
--- a/experimental/libbox/memory.go
+++ b/experimental/libbox/memory.go
@@ -4,20 +4,23 @@ import (
 	"math"
 	runtimeDebug "runtime/debug"
 
-	"github.com/sagernet/sing-box/common/conntrack"
+	C "github.com/sagernet/sing-box/constant"
 )
 
+var memoryLimitEnabled bool
+
 func SetMemoryLimit(enabled bool) {
-	const memoryLimit = 45 * 1024 * 1024
-	const memoryLimitGo = memoryLimit / 1.5
+	memoryLimitEnabled = enabled
+	const memoryLimitGo = 45 * 1024 * 1024
 	if enabled {
 		runtimeDebug.SetGCPercent(10)
-		runtimeDebug.SetMemoryLimit(memoryLimitGo)
-		conntrack.KillerEnabled = true
-		conntrack.MemoryLimit = memoryLimit
+		if C.IsIos {
+			runtimeDebug.SetMemoryLimit(memoryLimitGo)
+		}
 	} else {
 		runtimeDebug.SetGCPercent(100)
-		runtimeDebug.SetMemoryLimit(math.MaxInt64)
-		conntrack.KillerEnabled = false
+		if C.IsIos {
+			runtimeDebug.SetMemoryLimit(math.MaxInt64)
+		}
 	}
 }
diff --git a/go.mod b/go.mod
index 0523b73fc..506b54cf0 100644
--- a/go.mod
+++ b/go.mod
@@ -27,8 +27,8 @@ 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 v0.0.0-20260221042137-abd78bb191a8
-	github.com/sagernet/cronet-go/all v0.0.0-20260221042137-abd78bb191a8
+	github.com/sagernet/cronet-go v0.0.0-20260226034600-34ec1a064c64
+	github.com/sagernet/cronet-go/all v0.0.0-20260226034600-34ec1a064c64
 	github.com/sagernet/fswatch v0.1.1
 	github.com/sagernet/gomobile v0.1.11
 	github.com/sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1
@@ -105,35 +105,35 @@ require (
 	github.com/prometheus-community/pro-bing v0.4.0 // indirect
 	github.com/quic-go/qpack v0.6.0 // indirect
 	github.com/safchain/ethtool v0.3.0 // indirect
-	github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260221041448-e52d68fd87fe // indirect
-	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260221041448-e52d68fd87fe // indirect
+	github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260226033953-5745aabe7717 // indirect
+	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260226033953-5745aabe7717 // indirect
 	github.com/sagernet/netlink v0.0.0-20240612041022-b9a21c07ac6a // indirect
 	github.com/sagernet/nftables v0.3.0-beta.4 // indirect
 	github.com/spf13/pflag v1.0.9 // indirect
diff --git a/go.sum b/go.sum
index 738a415b1..c9478c270 100644
--- a/go.sum
+++ b/go.sum
@@ -152,68 +152,68 @@ 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 v0.0.0-20260221042137-abd78bb191a8 h1:XcZiLUXnYE74RvqVdsyxgIInBuFaZbABx2Hom5U6uuk=
-github.com/sagernet/cronet-go v0.0.0-20260221042137-abd78bb191a8/go.mod h1:hwFHBEjjthyEquDULbr4c4ucMedp8Drb6Jvm2kt/0Bw=
-github.com/sagernet/cronet-go/all v0.0.0-20260221042137-abd78bb191a8 h1:uaUy9opPmPYD+viUeUnBzT+lw5b19j6pC/iKew7u13I=
-github.com/sagernet/cronet-go/all v0.0.0-20260221042137-abd78bb191a8/go.mod h1:Gn1d0D8adjp7mlgSv+/pVLJsG+engIMBp/R4+1MOhlk=
-github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260221041448-e52d68fd87fe h1:iKIZJsvD+D3sdAzAeeOodJBxnFL9OVs1LTq3xnmQ6wQ=
-github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:XXDwdjX/T8xftoeJxQmbBoYXZp8MAPFR2CwbFuTpEtw=
-github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260221041448-e52d68fd87fe h1:/YhWKKVb3uQ5JmBQwFEOKg8QK2w0Ky6dxEb/UHrhQww=
-github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:iNiUGoLtnr8/JTuVNj7XJbmpOAp2C6+B81KDrPxwaZM=
-github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260221041448-e52d68fd87fe h1:h+XF746wRtYKavUeS8//Vro6s9f0F6+pI8VQFLMLg6E=
-github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:19ILNUOGIzRdOqa2mq+iY0JoHxuieB7/lnjYeaA2vEc=
-github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260221041448-e52d68fd87fe h1:yMs96D9ErwAG8gEHV6zaQ5cp9ZPNBHExxJ5+u8cZ644=
-github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:JxzGyQf94Cr6sBShKqODGDyRUlESfJK/Njcz9Lz6qMQ=
-github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260221041448-e52d68fd87fe h1:HUJtGjXcB+70W+YfeLgue6X1u69XLN0Ar56Ipg3gtvY=
-github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:KN+9T9TBycGOLzmKU4QdcHAJEj6Nlx48ifnlTvvHMvs=
-github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260221041448-e52d68fd87fe h1:ivo7JwVqDTMf/qVfpKYdwcIc+NzKGyMJ/WLj/TTNYXg=
-github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:kojvtUc29KKnk8hs2QIANynVR59921SnGWA9kXohHc0=
-github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe h1:HdWJLwa/Ie3jsueJ0O2mZd4V/NP1UJ6bamdcNHWsYEo=
-github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:hkQzRE5GDbaH1/ioqYh0Taho4L6i0yLRCVEZ5xHz5M0=
-github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260221041448-e52d68fd87fe h1:A9PWi2xCI+TCr9ALr+BO76WCCk1JnRyjeEH0/+rdyRc=
-github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:tzVJFTOm66UxLxy6K0ZN5Ic2PC79e+sKKnt+V9puEa4=
-github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260221041448-e52d68fd87fe h1:aMOUWbGjkPBFqObA+uAJOfVuBkHfvz2sibNgOJqjuBs=
-github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:M/pN6m3j0HFU6/y83n0HU6GLYys3tYdr/xTE8hVEGMo=
-github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260221041448-e52d68fd87fe h1:CzE+sJ2iOvJwOuZhpiDV5VlQrBaNJAZhDCafly+TH9c=
-github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:cGh5hO6eljCo6KMQ/Cel8Xgq4+etL0awZLRBDVG1EZQ=
-github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260221041448-e52d68fd87fe h1:2grC2CeyUiYVgqG7BGKpJvjFzYv0wL64QMoBqOHVZsI=
-github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:JFE0/cxaKkx0wqPMZU7MgaplQlU0zudv82dROJjClKU=
-github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260221041448-e52d68fd87fe h1:+N9/LauocInR5kxXU+L5bQe1bndCZUC+6L0FaozWZNI=
-github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:vU8VftFeSt7fURCa3JXD6+k6ss1YAX+idQjPvHmJ2tI=
-github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260221041448-e52d68fd87fe h1:mRJcjGtKG/eaPL4sZ4Ij+e7aLdg1AEXNI1PgRnxI6H8=
-github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:vCe4OUuL+XOUge9v3MyTD45BnuAXiH+DkjN9quDXJzQ=
-github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260221041448-e52d68fd87fe h1:UkWiTAxUAjTtsu7e52cvMrmbShz+ahTdGkhF9mEIIZU=
-github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:w9amBWrvjtohQzBGCKJ7LCh22LhTIJs4sE7cYaKQzM0=
-github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260221041448-e52d68fd87fe h1:giJVex0bwZy+DwmPwfZ+NZmafBRTsaZ+QUaD2Fkacxs=
-github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:TqlsFtcYS/etTeck46kHBeT8Le0Igw1Q/AV88UnMS3s=
-github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260221041448-e52d68fd87fe h1:XkjAQkciY78eSMF/9VdaWRWb+OfPvoIxVKx5gHGfSIg=
-github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:B6Qd0vys8sv9OKVRN6J9RqDzYRGE938Fb2zrYdBDyTQ=
-github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260221041448-e52d68fd87fe h1:8uDfbPXAL0MWqGI8bm6YJghRmGvK08z4jEIGoODKqTI=
-github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:3tXMMFY7AHugOVBZ5Al7cL7JKsnFOe5bMVr0hZPk3ow=
-github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260221041448-e52d68fd87fe h1:Ucs4htbATTdG7YGHCyQ4vMYRhltVvsapZ95THRNssr4=
-github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:Wt5uFdU3tnmm8YzobYewwdF7Mt6SucRQg6xeTNWC3Tk=
-github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260221041448-e52d68fd87fe h1:oeQjTH4lveV4M7/hqOJFfwQ9UfWvkFZEXTc00R2acuk=
-github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:lyIF6wKBLwWa5ZXaAKbAoewewl+yCHo2iYev39Mbj4E=
-github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260221041448-e52d68fd87fe h1:NWABhpSuXcN61hF0CUqwliJXxEbmHidoAHxtB61V3GA=
-github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:H46PnSTTZNcZokLLiDeMDaHiS1l14PH3tzWi0eykjD8=
-github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260221041448-e52d68fd87fe h1:+0VrQdlGR/zLjPzinXFqFR2sdzF2BXoXu7f8xaMuwtg=
-github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:RBhSUDAKWq7fswtV4nQUQhuaTLcX3ettR7teA7/yf2w=
-github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260221041448-e52d68fd87fe h1:DYW55QJOZBI4Znjhc0IiusF+IMg4R2dHPX0KnZC6gSo=
-github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:wRzoIOGG4xbpp3Gh3triLKwMwYriScXzFtunLYhY4w0=
-github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260221041448-e52d68fd87fe h1:xbbZtyXOxYJMplsyv371ddQb7QrEnyXIIGdUK/3WNTE=
-github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:LNiZXmWil1OPwKCheqQjtakZlJuKGFz+iv2eGF76Hhs=
-github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260221041448-e52d68fd87fe h1:YSH2lVT+Sn29lQQbwhDpxZvGjVSg80SUfW4JQ8vM3aA=
-github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:YFDGKTkpkJGc5+hnX/RYosZyTWg9h+68VB55fYRRLYc=
-github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe h1:gQ1veofYJr8Z1hBVM2PIrn4+EMKvwh+zWpYBr+mxgQ8=
-github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:aaX0YGl8nhGmfRWI8bc3BtDjY8Vzx6O0cS/e1uqxDq4=
-github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260221041448-e52d68fd87fe h1:e2TMlbEottRCDfTWxUSw4Jl5dK8IInV02XIvLKVjLbM=
-github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260221041448-e52d68fd87fe/go.mod h1:EdzMKA96xITc42QEI+ct4SwqX8Dn3ltKK8wzdkLWpSc=
-github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260221041448-e52d68fd87fe h1:Cgh+DP/Ns1djisz+LFxA1nEhyF6EEU5ZdVxNTkiX2BI=
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 github.com/sagernet/fswatch v0.1.1/go.mod h1:nz85laH0mkQqJfaOrqPpkwtU1znMFNVTpT/5oRsVz/o=
 github.com/sagernet/gomobile v0.1.11 h1:niMQAspvuThup5eRZQpsGcbM76zAvnsGr7RUIpnQMDQ=
diff --git a/include/oom_killer.go b/include/oom_killer.go
new file mode 100644
index 000000000..3f70d9d0e
--- /dev/null
+++ b/include/oom_killer.go
@@ -0,0 +1,10 @@
+package include
+
+import (
+	"github.com/sagernet/sing-box/adapter/service"
+	"github.com/sagernet/sing-box/service/oomkiller"
+)
+
+func registerOOMKillerService(registry *service.Registry) {
+	oomkiller.RegisterService(registry)
+}
diff --git a/include/registry.go b/include/registry.go
index d909b8500..64a49b61a 100644
--- a/include/registry.go
+++ b/include/registry.go
@@ -137,6 +137,7 @@ func ServiceRegistry() *service.Registry {
 	registerDERPService(registry)
 	registerCCMService(registry)
 	registerOCMService(registry)
+	registerOOMKillerService(registry)
 
 	return registry
 }
diff --git a/option/oom_killer.go b/option/oom_killer.go
new file mode 100644
index 000000000..9fbbde848
--- /dev/null
+++ b/option/oom_killer.go
@@ -0,0 +1,3 @@
+package option
+
+type OOMKillerServiceOptions struct{}
diff --git a/protocol/naive/outbound.go b/protocol/naive/outbound.go
index dcc1aec52..8249a1fef 100644
--- a/protocol/naive/outbound.go
+++ b/protocol/naive/outbound.go
@@ -254,6 +254,10 @@ func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (n
 	return h.uotClient.ListenPacket(ctx, destination)
 }
 
+func (h *Outbound) InterfaceUpdated() {
+	h.client.Engine().CloseAllConnections()
+}
+
 func (h *Outbound) Close() error {
 	return h.client.Close()
 }
diff --git a/route/conn.go b/route/conn.go
index 3e9c831c1..899d29391 100644
--- a/route/conn.go
+++ b/route/conn.go
@@ -44,16 +44,52 @@ func (m *ConnectionManager) Start(stage adapter.StartStage) error {
 	return nil
 }
 
-func (m *ConnectionManager) Close() error {
+func (m *ConnectionManager) Count() int {
+	return m.connections.Len()
+}
+
+func (m *ConnectionManager) CloseAll() {
 	m.access.Lock()
-	defer m.access.Unlock()
-	for element := m.connections.Front(); element != nil; element = element.Next() {
-		common.Close(element.Value)
+	var closers []io.Closer
+	for element := m.connections.Front(); element != nil; {
+		nextElement := element.Next()
+		closers = append(closers, element.Value)
+		m.connections.Remove(element)
+		element = nextElement
 	}
-	m.connections.Init()
+	m.access.Unlock()
+	for _, closer := range closers {
+		common.Close(closer)
+	}
+}
+
+func (m *ConnectionManager) Close() error {
+	m.CloseAll()
 	return nil
 }
 
+func (m *ConnectionManager) TrackConn(conn net.Conn) net.Conn {
+	m.access.Lock()
+	element := m.connections.PushBack(conn)
+	m.access.Unlock()
+	return &trackedConn{
+		Conn:    conn,
+		manager: m,
+		element: element,
+	}
+}
+
+func (m *ConnectionManager) TrackPacketConn(conn net.PacketConn) net.PacketConn {
+	m.access.Lock()
+	element := m.connections.PushBack(conn)
+	m.access.Unlock()
+	return &trackedPacketConn{
+		PacketConn: conn,
+		manager:    m,
+		element:    element,
+	}
+}
+
 func (m *ConnectionManager) NewConnection(ctx context.Context, this N.Dialer, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
 	ctx = adapter.WithContext(ctx, &metadata)
 	var (
@@ -92,14 +128,6 @@ func (m *ConnectionManager) NewConnection(ctx context.Context, this N.Dialer, co
 	if metadata.TLSFragment || metadata.TLSRecordFragment {
 		remoteConn = tf.NewConn(remoteConn, ctx, metadata.TLSFragment, metadata.TLSRecordFragment, metadata.TLSFragmentFallbackDelay)
 	}
-	m.access.Lock()
-	element := m.connections.PushBack(conn)
-	m.access.Unlock()
-	onClose = N.AppendClose(onClose, func(it error) {
-		m.access.Lock()
-		defer m.access.Unlock()
-		m.connections.Remove(element)
-	})
 	var done atomic.Bool
 	if m.kickWriteHandshake(ctx, conn, remoteConn, false, &done, onClose) {
 		return
@@ -216,14 +244,6 @@ func (m *ConnectionManager) NewPacketConnection(ctx context.Context, this N.Dial
 		ctx, conn = canceler.NewPacketConn(ctx, conn, udpTimeout)
 	}
 	destination := bufio.NewPacketConn(remotePacketConn)
-	m.access.Lock()
-	element := m.connections.PushBack(conn)
-	m.access.Unlock()
-	onClose = N.AppendClose(onClose, func(it error) {
-		m.access.Lock()
-		defer m.access.Unlock()
-		m.connections.Remove(element)
-	})
 	var done atomic.Bool
 	go m.packetConnectionCopy(ctx, conn, destination, false, &done, onClose)
 	go m.packetConnectionCopy(ctx, destination, conn, true, &done, onClose)
@@ -242,7 +262,9 @@ func (m *ConnectionManager) connectionCopy(ctx context.Context, source net.Conn,
 		destination.Close()
 	}
 	if done.Swap(true) {
-		onClose(err)
+		if onClose != nil {
+			onClose(err)
+		}
 		common.Close(source, destination)
 	}
 	if !direction {
@@ -303,7 +325,9 @@ func (m *ConnectionManager) kickWriteHandshake(ctx context.Context, source net.C
 		return false
 	}
 	if !done.Swap(true) {
-		onClose(err)
+		if onClose != nil {
+			onClose(err)
+		}
 	}
 	common.Close(source, destination)
 	if !direction {
@@ -334,7 +358,59 @@ func (m *ConnectionManager) packetConnectionCopy(ctx context.Context, source N.P
 		}
 	}
 	if !done.Swap(true) {
-		onClose(err)
+		if onClose != nil {
+			onClose(err)
+		}
 	}
 	common.Close(source, destination)
 }
+
+type trackedConn struct {
+	net.Conn
+	manager *ConnectionManager
+	element *list.Element[io.Closer]
+}
+
+func (c *trackedConn) Close() error {
+	c.manager.access.Lock()
+	c.manager.connections.Remove(c.element)
+	c.manager.access.Unlock()
+	return c.Conn.Close()
+}
+
+func (c *trackedConn) Upstream() any {
+	return c.Conn
+}
+
+func (c *trackedConn) ReaderReplaceable() bool {
+	return true
+}
+
+func (c *trackedConn) WriterReplaceable() bool {
+	return true
+}
+
+type trackedPacketConn struct {
+	net.PacketConn
+	manager *ConnectionManager
+	element *list.Element[io.Closer]
+}
+
+func (c *trackedPacketConn) Close() error {
+	c.manager.access.Lock()
+	c.manager.connections.Remove(c.element)
+	c.manager.access.Unlock()
+	return c.PacketConn.Close()
+}
+
+func (c *trackedPacketConn) Upstream() any {
+	return bufio.NewPacketConn(c.PacketConn)
+}
+
+func (c *trackedPacketConn) ReaderReplaceable() bool {
+	return true
+}
+
+func (c *trackedPacketConn) WriterReplaceable() bool {
+	return true
+}
diff --git a/route/network.go b/route/network.go
index b53142b57..b8eefdc06 100644
--- a/route/network.go
+++ b/route/network.go
@@ -13,7 +13,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/conntrack"
 	"github.com/sagernet/sing-box/common/settings"
 	"github.com/sagernet/sing-box/common/taskmonitor"
 	C "github.com/sagernet/sing-box/constant"
@@ -48,6 +47,7 @@ type NetworkManager struct {
 	powerListener          winpowrprof.EventListener
 	pauseManager           pause.Manager
 	platformInterface      adapter.PlatformInterface
+	connectionManager      adapter.ConnectionManager
 	endpoint               adapter.EndpointManager
 	inbound                adapter.InboundManager
 	outbound               adapter.OutboundManager
@@ -90,6 +90,7 @@ func NewNetworkManager(ctx context.Context, logger logger.ContextLogger, options
 		},
 		pauseManager:      service.FromContext[pause.Manager](ctx),
 		platformInterface: service.FromContext[adapter.PlatformInterface](ctx),
+		connectionManager: service.FromContext[adapter.ConnectionManager](ctx),
 		endpoint:          service.FromContext[adapter.EndpointManager](ctx),
 		inbound:           service.FromContext[adapter.InboundManager](ctx),
 		outbound:          service.FromContext[adapter.OutboundManager](ctx),
@@ -450,7 +451,9 @@ func (r *NetworkManager) UpdateWIFIState() {
 }
 
 func (r *NetworkManager) ResetNetwork() {
-	conntrack.Close()
+	if r.connectionManager != nil {
+		r.connectionManager.CloseAll()
+	}
 
 	for _, endpoint := range r.endpoint.Endpoints() {
 		listener, isListener := endpoint.(adapter.InterfaceUpdateListener)
diff --git a/route/route.go b/route/route.go
index fd025a1b3..240d0343a 100644
--- a/route/route.go
+++ b/route/route.go
@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/conntrack"
 	"github.com/sagernet/sing-box/common/process"
 	"github.com/sagernet/sing-box/common/sniff"
 	C "github.com/sagernet/sing-box/constant"
@@ -80,7 +79,6 @@ func (r *Router) routeConnection(ctx context.Context, conn net.Conn, metadata ad
 		injectable.NewConnectionEx(ctx, conn, metadata, onClose)
 		return nil
 	}
-	conntrack.KillerCheck()
 	metadata.Network = N.NetworkTCP
 	switch metadata.Destination.Fqdn {
 	case mux.Destination.Fqdn:
@@ -216,8 +214,6 @@ func (r *Router) routePacketConnection(ctx context.Context, conn N.PacketConn, m
 		injectable.NewPacketConnectionEx(ctx, conn, metadata, onClose)
 		return nil
 	}
-	conntrack.KillerCheck()
-
 	// TODO: move to UoT
 	metadata.Network = N.NetworkUDP
 
diff --git a/service/oomkiller/service.go b/service/oomkiller/service.go
new file mode 100644
index 000000000..fb486ab9a
--- /dev/null
+++ b/service/oomkiller/service.go
@@ -0,0 +1,138 @@
+//go:build darwin && cgo
+
+package oomkiller
+
+/*
+#include <dispatch/dispatch.h>
+
+static dispatch_source_t memoryPressureSource;
+
+extern void goMemoryPressureCallback(unsigned long status);
+
+static void startMemoryPressureMonitor() {
+	memoryPressureSource = dispatch_source_create(
+		DISPATCH_SOURCE_TYPE_MEMORYPRESSURE,
+		0,
+		DISPATCH_MEMORYPRESSURE_WARN | DISPATCH_MEMORYPRESSURE_CRITICAL,
+		dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0)
+	);
+	dispatch_source_set_event_handler(memoryPressureSource, ^{
+		unsigned long status = dispatch_source_get_data(memoryPressureSource);
+		goMemoryPressureCallback(status);
+	});
+	dispatch_activate(memoryPressureSource);
+}
+
+static void stopMemoryPressureMonitor() {
+	if (memoryPressureSource) {
+		dispatch_source_cancel(memoryPressureSource);
+		memoryPressureSource = NULL;
+	}
+}
+*/
+import "C"
+
+import (
+	"context"
+	runtimeDebug "runtime/debug"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	boxService "github.com/sagernet/sing-box/adapter/service"
+	boxConstant "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common/memory"
+	"github.com/sagernet/sing/service"
+)
+
+func RegisterService(registry *boxService.Registry) {
+	boxService.Register[option.OOMKillerServiceOptions](registry, boxConstant.TypeOOMKiller, NewService)
+}
+
+var (
+	globalAccess   sync.Mutex
+	globalServices []*Service
+)
+
+type Service struct {
+	boxService.Adapter
+	logger log.ContextLogger
+	router adapter.Router
+}
+
+func NewService(ctx context.Context, logger log.ContextLogger, tag string, options option.OOMKillerServiceOptions) (adapter.Service, error) {
+	return &Service{
+		Adapter: boxService.NewAdapter(boxConstant.TypeOOMKiller, tag),
+		logger:  logger,
+		router:  service.FromContext[adapter.Router](ctx),
+	}, nil
+}
+
+func (s *Service) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	globalAccess.Lock()
+	isFirst := len(globalServices) == 0
+	globalServices = append(globalServices, s)
+	globalAccess.Unlock()
+	if isFirst {
+		C.startMemoryPressureMonitor()
+	}
+	s.logger.Info("started memory pressure monitor")
+	return nil
+}
+
+func (s *Service) Close() error {
+	globalAccess.Lock()
+	for i, service := range globalServices {
+		if service == s {
+			globalServices = append(globalServices[:i], globalServices[i+1:]...)
+			break
+		}
+	}
+	isLast := len(globalServices) == 0
+	globalAccess.Unlock()
+	if isLast {
+		C.stopMemoryPressureMonitor()
+	}
+	return nil
+}
+
+//export goMemoryPressureCallback
+func goMemoryPressureCallback(status C.ulong) {
+	globalAccess.Lock()
+	services := make([]*Service, len(globalServices))
+	copy(services, globalServices)
+	globalAccess.Unlock()
+	if len(services) == 0 {
+		return
+	}
+	criticalFlag := C.ulong(C.DISPATCH_MEMORYPRESSURE_CRITICAL)
+	warnFlag := C.ulong(C.DISPATCH_MEMORYPRESSURE_WARN)
+	isCritical := status&criticalFlag != 0
+	isWarning := status&warnFlag != 0
+	var level string
+	switch {
+	case isCritical:
+		level = "critical"
+	case isWarning:
+		level = "warning"
+	default:
+		level = "normal"
+	}
+	for _, s := range services {
+		if isCritical {
+			s.logger.Error("memory pressure: ", level, ", usage: ", memory.Total()/(1024*1024), " MiB, resetting network")
+			s.router.ResetNetwork()
+		} else if isWarning {
+			s.logger.Warn("memory pressure: ", level, ", usage: ", memory.Total()/(1024*1024), " MiB")
+		} else {
+			s.logger.Debug("memory pressure: ", level, ", usage: ", memory.Total()/(1024*1024), " MiB")
+		}
+	}
+	if isCritical {
+		runtimeDebug.FreeOSMemory()
+	}
+}
diff --git a/service/oomkiller/service_stub.go b/service/oomkiller/service_stub.go
new file mode 100644
index 000000000..425f525e7
--- /dev/null
+++ b/service/oomkiller/service_stub.go
@@ -0,0 +1,39 @@
+//go:build !darwin || !cgo
+
+package oomkiller
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/adapter"
+	boxService "github.com/sagernet/sing-box/adapter/service"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func RegisterService(registry *boxService.Registry) {
+	boxService.Register[option.OOMKillerServiceOptions](registry, C.TypeOOMKiller, NewService)
+}
+
+type Service struct {
+	boxService.Adapter
+}
+
+func NewService(ctx context.Context, logger log.ContextLogger, tag string, options option.OOMKillerServiceOptions) (adapter.Service, error) {
+	return &Service{
+		Adapter: boxService.NewAdapter(C.TypeOOMKiller, tag),
+	}, nil
+}
+
+func (s *Service) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	return E.New("memory pressure monitoring is not available on this platform")
+}
+
+func (s *Service) Close() error {
+	return nil
+}