Improve loopback detector

experimental/libbox/config.go

@@ -9,7 +9,6 @@ import (
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
-	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common/control"
@@ -75,7 +74,7 @@ func (s *platformInterfaceStub) UsePlatformInterfaceGetter() bool {
 	return true
 }
 
-func (s *platformInterfaceStub) Interfaces() ([]platform.NetworkInterface, error) {
+func (s *platformInterfaceStub) Interfaces() ([]control.Interface, error) {
 	return nil, os.ErrInvalid
 }
 

experimental/libbox/platform/interface.go

@@ -2,7 +2,6 @@ package platform
 
 import (
 	"context"
-	"net/netip"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
@@ -20,16 +19,9 @@ type Interface interface {
 	UsePlatformDefaultInterfaceMonitor() bool
 	CreateDefaultInterfaceMonitor(logger logger.Logger) tun.DefaultInterfaceMonitor
 	UsePlatformInterfaceGetter() bool
-	Interfaces() ([]NetworkInterface, error)
+	Interfaces() ([]control.Interface, error)
 	UnderNetworkExtension() bool
 	ClearDNSCache()
 	ReadWIFIState() adapter.WIFIState
 	process.Searcher
 }
-
-type NetworkInterface struct {
-	Index     int
-	MTU       int
-	Name      string
-	Addresses []netip.Prefix
-}

experimental/libbox/service.go

@@ -192,14 +192,14 @@ func (w *platformInterfaceWrapper) UsePlatformInterfaceGetter() bool {
 	return w.iif.UsePlatformInterfaceGetter()
 }
 
-func (w *platformInterfaceWrapper) Interfaces() ([]platform.NetworkInterface, error) {
+func (w *platformInterfaceWrapper) Interfaces() ([]control.Interface, error) {
 	interfaceIterator, err := w.iif.GetInterfaces()
 	if err != nil {
 		return nil, err
 	}
-	var interfaces []platform.NetworkInterface
+	var interfaces []control.Interface
 	for _, netInterface := range iteratorToArray[*NetworkInterface](interfaceIterator) {
-		interfaces = append(interfaces, platform.NetworkInterface{
+		interfaces = append(interfaces, control.Interface{
 			Index:     int(netInterface.Index),
 			MTU:       int(netInterface.MTU),
 			Name:      netInterface.Name,