From f102ef1d948221eae802ec3627bc34c7384f2002 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Thu, 23 Apr 2026 05:52:14 +0800
Subject: [PATCH] Fix process search skipped for Android again

---
 adapter/platform.go            |  4 ++++
 experimental/libbox/config.go  |  5 +++++
 experimental/libbox/service.go | 17 +++++++++++++++++
 route/process_cache.go         | 13 ++++++++-----
 4 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/adapter/platform.go b/adapter/platform.go
index fa4cbc2e4..df1f44714 100644
--- a/adapter/platform.go
+++ b/adapter/platform.go
@@ -1,6 +1,8 @@
 package adapter
 
 import (
+	"net/netip"
+
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common/logger"
@@ -36,6 +38,8 @@ type PlatformInterface interface {
 
 	UsePlatformNotification() bool
 	SendNotification(notification *Notification) error
+
+	MyInterfaceAddress() []netip.Addr
 }
 
 type FindConnectionOwnerRequest struct {
diff --git a/experimental/libbox/config.go b/experimental/libbox/config.go
index 122425d29..b1676ab61 100644
--- a/experimental/libbox/config.go
+++ b/experimental/libbox/config.go
@@ -3,6 +3,7 @@ package libbox
 import (
 	"bytes"
 	"context"
+	"net/netip"
 	"os"
 
 	box "github.com/sagernet/sing-box"
@@ -144,6 +145,10 @@ func (s *platformInterfaceStub) SendNotification(notification *adapter.Notificat
 	return nil
 }
 
+func (s *platformInterfaceStub) MyInterfaceAddress() []netip.Addr {
+	return nil
+}
+
 func (s *platformInterfaceStub) UsePlatformLocalDNSTransport() bool {
 	return false
 }
diff --git a/experimental/libbox/service.go b/experimental/libbox/service.go
index 7d0b30043..37fd56c98 100644
--- a/experimental/libbox/service.go
+++ b/experimental/libbox/service.go
@@ -29,6 +29,7 @@ type platformInterfaceWrapper struct {
 	useProcFS              bool
 	networkManager         adapter.NetworkManager
 	myTunName              string
+	myTunAddress           []netip.Addr
 	defaultInterfaceAccess sync.Mutex
 	defaultInterface       *control.Interface
 	isExpensive            bool
@@ -78,9 +79,25 @@ func (w *platformInterfaceWrapper) OpenInterface(options *tun.Options, platformO
 	}
 	options.FileDescriptor = dupFd
 	w.myTunName = options.Name
+	w.myTunAddress = myTunAddress(options)
 	return tun.New(*options)
 }
 
+func myTunAddress(options *tun.Options) []netip.Addr {
+	addresses := make([]netip.Addr, 0, len(options.Inet4Address)+len(options.Inet6Address))
+	for _, prefix := range options.Inet4Address {
+		addresses = append(addresses, prefix.Addr())
+	}
+	for _, prefix := range options.Inet6Address {
+		addresses = append(addresses, prefix.Addr())
+	}
+	return addresses
+}
+
+func (w *platformInterfaceWrapper) MyInterfaceAddress() []netip.Addr {
+	return w.myTunAddress
+}
+
 func (w *platformInterfaceWrapper) UsePlatformDefaultInterfaceMonitor() bool {
 	return true
 }
diff --git a/route/process_cache.go b/route/process_cache.go
index 01b477c41..44ee3fcf7 100644
--- a/route/process_cache.go
+++ b/route/process_cache.go
@@ -74,16 +74,19 @@ func (r *Router) searchProcessInfo(ctx context.Context, metadata *adapter.Inboun
 }
 
 func (r *Router) isLocalSource(source netip.Addr) bool {
-	if !source.IsValid() {
-		return false
-	}
-	source = source.Unmap()
 	if source.IsLoopback() {
 		return true
 	}
+	if r.platformInterface != nil {
+		for _, addr := range r.platformInterface.MyInterfaceAddress() {
+			if addr == source {
+				return true
+			}
+		}
+	}
 	for _, netInterface := range r.network.InterfaceFinder().Interfaces() {
 		for _, prefix := range netInterface.Addresses {
-			if prefix.Addr().Unmap() == source {
+			if prefix.Addr() == source {
 				return true
 			}
 		}