chore: use sing-tun to replace old tun_adapter

component/ebpf/ebpf_linux.go

@@ -15,6 +15,30 @@ import (
 	C "github.com/Dreamacro/clash/constant"
 )
 
+func GetAutoDetectInterface() (string, error) {
+	routes, err := netlink.RouteList(nil, netlink.FAMILY_V4)
+	if err != nil {
+		return "", err
+	}
+
+	for _, route := range routes {
+		if route.Dst == nil {
+			lk, err := netlink.LinkByIndex(route.LinkIndex)
+			if err != nil {
+				return "", err
+			}
+
+			if lk.Type() == "tuntap" {
+				continue
+			}
+
+			return lk.Attrs().Name, nil
+		}
+	}
+
+	return "", fmt.Errorf("interface not found")
+}
+
 // NewTcEBpfProgram new redirect to tun ebpf program
 func NewTcEBpfProgram(ifaceNames []string, tunName string) (*TcEBpfProgram, error) {
 	tunIface, err := netlink.LinkByName(tunName)

component/ebpf/ebpf_others.go

@@ -15,3 +15,7 @@ func NewTcEBpfProgram(_ []string, _ string) (*TcEBpfProgram, error) {
 func NewRedirEBpfProgram(_ []string, _ uint16, _ string) (*TcEBpfProgram, error) {
 	return nil, fmt.Errorf("system not supported")
 }
+
+func GetAutoDetectInterface() (string, error) {
+	return "", fmt.Errorf("system not supported")
+}