Fix dns hijack on android

iproute2 on android does not support port rules

common/dialer/bind.go

@@ -1,19 +0,0 @@
-package dialer
-
-import (
-	"syscall"
-
-	"github.com/sagernet/sing/common/control"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func skipIfPrivate(next control.Func) control.Func {
-	return func(network, address string, conn syscall.RawConn) error {
-		destination := M.ParseSocksaddr(address)
-		if !N.IsPublicAddr(destination.Addr) {
-			return nil
-		}
-		return next(network, address, conn)
-	}
-}

common/dialer/default.go

@@ -64,25 +64,25 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 	var listener net.ListenConfig
 	if options.BindInterface != "" {
 		warnBindInterfaceOnUnsupportedPlatform.Check()
-		bindFunc := skipIfPrivate(control.BindToInterface(router.InterfaceBindManager(), options.BindInterface))
+		bindFunc := control.BindToInterface(router.InterfaceBindManager(), options.BindInterface)
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
 	} else if router.AutoDetectInterface() {
 		if C.IsWindows {
-			bindFunc := skipIfPrivate(control.BindToInterfaceIndexFunc(func() int {
-				return router.InterfaceMonitor().DefaultInterfaceIndex()
-			}))
+			bindFunc := control.BindToInterfaceIndexFunc(func(network, address string) int {
+				return router.InterfaceMonitor().DefaultInterfaceIndex(M.ParseSocksaddr(address).Addr)
+			})
 			dialer.Control = control.Append(dialer.Control, bindFunc)
 			listener.Control = control.Append(listener.Control, bindFunc)
 		} else {
-			bindFunc := skipIfPrivate(control.BindToInterfaceFunc(router.InterfaceBindManager(), func() string {
-				return router.InterfaceMonitor().DefaultInterfaceName()
-			}))
+			bindFunc := control.BindToInterfaceFunc(router.InterfaceBindManager(), func(network, address string) string {
+				return router.InterfaceMonitor().DefaultInterfaceName(M.ParseSocksaddr(address).Addr)
+			})
 			dialer.Control = control.Append(dialer.Control, bindFunc)
 			listener.Control = control.Append(listener.Control, bindFunc)
 		}
 	} else if router.DefaultInterface() != "" {
-		bindFunc := skipIfPrivate(control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface()))
+		bindFunc := control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface())
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
 	}

common/settings/proxy_darwin.go

@@ -1,6 +1,7 @@
 package settings
 
 import (
+	"net/netip"
 	"strings"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -20,7 +21,7 @@ type systemProxy struct {
 }
 
 func (p *systemProxy) update() error {
-	newInterfaceName := p.monitor.DefaultInterfaceName()
+	newInterfaceName := p.monitor.DefaultInterfaceName(netip.IPv4Unspecified())
 	if p.interfaceName == newInterfaceName {
 		return nil
 	}