Bump version

cronet-go: Update chromium to 145.0.7632.159
documentation: Update descriptions for neighbor rules
2026-04-12 01:57:18 +10:00 · 2026-03-07 16:49:32 +08:00 · 2026-03-07 16:45:33 +08:00 · 2026-03-07 16:40:30 +08:00 · 2026-03-07 16:23:59 +08:00 · 2026-03-07 16:23:59 +08:00
46 changed files with 2243 additions and 99 deletions
--- a/.github/CRONET_GO_VERSION
+++ b/.github/CRONET_GO_VERSION
@@ -1 +1 @@
-cba7b9ac0399055aa49fbdc57c03c374f58e1597
+d181863d6a4aa2e7bb7eaf67c1d512c5e4827fde
--- a/adapter/inbound.go
+++ b/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

--- a/adapter/neighbor.go
+++ b/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)
+}
--- a/adapter/platform.go
+++ b/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 {
--- a/adapter/router.go
+++ b/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()
 }
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,6 +2,31 @@
 icon: material/alert-decagram
 ---

+#### 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
--- a/docs/configuration/dns/rule.md
+++ b/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 ""
--- a/docs/configuration/dns/rule.zh.md
+++ b/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 ""
--- a/docs/configuration/inbound/tun.md
+++ b/docs/configuration/inbound/tun.md
@@ -2,6 +2,11 @@
 icon: material/new-box
 ---

+!!! quote "Changes in sing-box 1.14.0"
+
+    :material-plus: [include_mac_address](#include_mac_address)  
+    :material-plus: [exclude_mac_address](#exclude_mac_address)
+
 !!! quote "Changes in sing-box 1.13.0"

    :material-plus: [auto_redirect_reset_mark](#auto_redirect_reset_mark)  
@@ -125,6 +130,12 @@ 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,
@@ -548,6 +559,30 @@ 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.
--- a/docs/configuration/inbound/tun.zh.md
+++ b/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 1.13.0 中的更改"

    :material-plus: [auto_redirect_reset_mark](#auto_redirect_reset_mark)  
@@ -126,6 +131,12 @@ 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,
@@ -536,6 +547,30 @@ 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。
--- a/docs/configuration/route/index.md
+++ b/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"
--- a/docs/configuration/route/index.zh.md
+++ b/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"
--- a/docs/configuration/route/rule.md
+++ b/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"
--- a/docs/configuration/route/rule.zh.md
+++ b/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)  
@@ -156,6 +161,12 @@ 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"
@@ -446,6 +457,26 @@ 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"
--- a/docs/configuration/shared/neighbor.md
+++ b/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.
--- a/docs/configuration/shared/neighbor.zh.md
+++ b/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。
--- a/experimental/libbox/config.go
+++ b/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
 }
--- a/experimental/libbox/neighbor.go
+++ b/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
+}
--- a/experimental/libbox/neighbor_darwin.go
+++ b/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}
+}
--- a/experimental/libbox/neighbor_linux.go
+++ b/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))
+		}
+	}
+}
--- a/experimental/libbox/neighbor_stub.go
+++ b/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
+}
--- a/experimental/libbox/platform.go
+++ b/experimental/libbox/platform.go
@@ -21,6 +21,13 @@ 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 {
--- a/experimental/libbox/service.go
+++ b/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)
 }

@@ -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 {
--- a/go.mod
+++ b/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 v0.0.0-20260303101018-cba7b9ac0399
-	github.com/sagernet/cronet-go/all v0.0.0-20260303101018-cba7b9ac0399
+	github.com/sagernet/cronet-go v0.0.0-20260306075351-e5943141aa40
+	github.com/sagernet/cronet-go/all v0.0.0-20260306075351-e5943141aa40
 	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
@@ -39,7 +41,7 @@ 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 v0.8.2
+	github.com/sagernet/sing-tun v0.8.3-0.20260305131414-5083da5745ed
 	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.6.0.20260303140313-3bcf9a4b9349
@@ -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
@@ -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 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
-	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260303100323-125d0d93b3e6 // indirect
+	github.com/sagernet/cronet-go/lib/android_386 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/android_amd64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/android_arm64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_amd64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/darwin_arm64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/ios_amd64_simulator v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/ios_arm64_simulator v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_386_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_amd64_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm64_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_arm_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_loong64_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mips64le v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_mipsle_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/linux_riscv64_musl v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_amd64_simulator v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/tvos_arm64_simulator v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260306074725-2e4f95b376d3 // indirect
+	github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260306074725-2e4f95b376d3 // 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
--- a/go.sum
+++ b/go.sum
@@ -162,68 +162,68 @@ 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 v0.0.0-20260303101018-cba7b9ac0399 h1:x3tVYQHdqqnKbEd9/H4KIGhtHTjA+KfiiaXedI3/w8Q=
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+github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260306074725-2e4f95b376d3 h1:WHTBryhjXaniv5fMjSr/FvWKyAhdomD7rLagh4ano10=
+github.com/sagernet/cronet-go/lib/windows_amd64 v0.0.0-20260306074725-2e4f95b376d3/go.mod h1:lm9w/oCCRyBiUa3G8lDQTT8x/ONUvgVR2iV9fVzUZB8=
+github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260306074725-2e4f95b376d3 h1:TmikX4Xtalpv2Jts/MuB5qwg+KmTKbrpPf5deZGLIqA=
+github.com/sagernet/cronet-go/lib/windows_arm64 v0.0.0-20260306074725-2e4f95b376d3/go.mod h1:n34YyLgapgjWdKa0IoeczjAFCwD3/dxbsH5sucKw0bw=
 github.com/sagernet/fswatch v0.1.1 h1:YqID+93B7VRfqIH3PArW/XpJv5H4OLEVWDfProGoRQs=
 github.com/sagernet/fswatch v0.1.1/go.mod h1:nz85laH0mkQqJfaOrqPpkwtU1znMFNVTpT/5oRsVz/o=
 github.com/sagernet/gomobile v0.1.12 h1:XwzjZaclFF96deLqwAgK8gU3w0M2A8qxgDmhV+A0wjg=
@@ -248,8 +248,8 @@ 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 v0.8.2 h1:rQr/x3eQCHh3oleIaoJdPdJwqzZp4+QWcJLT0Wz2xKY=
-github.com/sagernet/sing-tun v0.8.2/go.mod h1:pLCo4o+LacXEzz0bhwhJkKBjLlKOGPBNOAZ97ZVZWzs=
+github.com/sagernet/sing-tun v0.8.3-0.20260305131414-5083da5745ed h1:0XZgwnEX2HgQ/0J0The6KPEAezBz5bLl18PMTRHNN9E=
+github.com/sagernet/sing-tun v0.8.3-0.20260305131414-5083da5745ed/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=
--- a/mkdocs.yml
+++ b/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
--- a/option/route.go
+++ b/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"`
--- a/option/rule.go
+++ b/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"`
--- a/option/rule_dns.go
+++ b/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"`
--- a/option/tun.go
+++ b/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"`
--- a/protocol/tun/inbound.go
+++ b/protocol/tun/inbound.go
@@ -156,6 +156,22 @@ 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 +209,8 @@ 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,
 		},
--- a/route/neighbor_resolver_darwin.go
+++ b/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
+}
--- a/route/neighbor_resolver_lease.go
+++ b/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
+			}
+		}
+	}
+}
--- a/route/neighbor_resolver_linux.go
+++ b/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()
+}
--- a/route/neighbor_resolver_parse.go
+++ b/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)
+}
--- a/route/neighbor_resolver_platform.go
+++ b/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")
+}
--- a/route/neighbor_resolver_stub.go
+++ b/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
+}
--- a/route/neighbor_table_darwin.go
+++ b/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
+}
--- a/route/neighbor_table_linux.go
+++ b/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
+}
--- a/route/route.go
+++ b/route/route.go
@@ -439,6 +439,23 @@ 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 {
--- a/route/router.go
+++ b/route/router.go
@@ -31,9 +31,12 @@ 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
+	neighborResolver  adapter.NeighborResolver
 	pauseManager      pause.Manager
 	trackers          []adapter.ConnectionTracker
 	platformInterface adapter.PlatformInterface
@@ -53,6 +56,8 @@ 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 +117,7 @@ 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 +147,36 @@ func (r *Router) Start(stage adapter.StartStage) error {
 				}
 			}
 		}
+		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 +208,13 @@ 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 {
@@ -206,6 +249,14 @@ 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()
--- a/route/rule/rule_default.go
+++ b/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)
--- a/route/rule/rule_dns.go
+++ b/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 {
--- a/route/rule/rule_item_source_hostname.go
+++ b/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
+}
--- a/route/rule/rule_item_source_mac_address.go
+++ b/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
+}
--- a/route/rule_conds.go
+++ b/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
 }
Author	SHA1	Message	Date
世界	7f2316aff0	Bump version	2026-03-07 16:49:32 +08:00
世界	1b828083a1	cronet-go: Update chromium to 145.0.7632.159	2026-03-07 16:45:33 +08:00
世界	8280a9be13	documentation: Update descriptions for neighbor rules	2026-03-07 16:40:30 +08:00
世界	503e4d8551	Add macOS support for MAC and hostname rule items	2026-03-07 16:23:59 +08:00
世界	7f34daa2d2	Add Android support for MAC and hostname rule items	2026-03-07 16:23:59 +08:00
世界	e26e0d7be7	Add MAC and hostname rule items	2026-03-07 16:23:58 +08:00