From 64869d0f17b1309833af497d129e29025d1f837d Mon Sep 17 00:00:00 2001
From: Skyxim <noreply@skyxim.com>
Date: Sat, 8 Jan 2022 16:57:59 +0800
Subject: [PATCH] [Fixed] Remove the Linux automatic routing configuration 
 Change the name of the Linux network card to utun

---
 listener/tun/dev/dev.go       | 59 -----------------------------------
 listener/tun/dev/dev_linux.go | 10 +++---
 2 files changed, 4 insertions(+), 65 deletions(-)

diff --git a/listener/tun/dev/dev.go b/listener/tun/dev/dev.go
index 004b51da..54ff591e 100644
--- a/listener/tun/dev/dev.go
+++ b/listener/tun/dev/dev.go
@@ -1,13 +1,5 @@
 package dev
 
-import (
-	"bytes"
-	"os/exec"
-	"runtime"
-
-	"github.com/Dreamacro/clash/log"
-)
-
 // TunDevice is cross-platform tun interface
 type TunDevice interface {
 	Name() string
@@ -18,54 +10,3 @@ type TunDevice interface {
 	Read(buff []byte) (int, error)
 	Write(buff []byte) (int, error)
 }
-
-func SetLinuxAutoRoute() {
-	log.Infoln("Tun adapter auto setting global route")
-	addLinuxSystemRoute("0")
-	//addLinuxSystemRoute("1")
-	//addLinuxSystemRoute("2/7")
-	//addLinuxSystemRoute("4/6")
-	//addLinuxSystemRoute("8/5")
-	//addLinuxSystemRoute("16/4")
-	//addLinuxSystemRoute("32/3")
-	//addLinuxSystemRoute("64/2")
-	//addLinuxSystemRoute("128.0/1")
-	//addLinuxSystemRoute("198.18.0/16")
-}
-
-func RemoveLinuxAutoRoute() {
-	log.Infoln("Tun adapter removing global route")
-	delLinuxSystemRoute("0")
-	//delLinuxSystemRoute("1")
-	//delLinuxSystemRoute("2/7")
-	//delLinuxSystemRoute("4/6")
-	//delLinuxSystemRoute("8/5")
-	//delLinuxSystemRoute("16/4")
-	//delLinuxSystemRoute("32/3")
-	//delLinuxSystemRoute("64/2")
-	//delLinuxSystemRoute("128.0/1")
-	//delLinuxSystemRoute("198.18.0/16")
-}
-
-func addLinuxSystemRoute(net string) {
-	if runtime.GOOS != "darwin" && runtime.GOOS != "linux" {
-		return
-	}
-	cmd := exec.Command("route", "add", "-net", net, "meta")
-	var stderr bytes.Buffer
-	cmd.Stderr = &stderr
-	if err := cmd.Run(); err != nil {
-		log.Errorln("[auto route] Failed to add system route: %s: %s , cmd: %s", err.Error(), stderr.String(), cmd.String())
-	}
-}
-
-func delLinuxSystemRoute(net string) {
-	if runtime.GOOS != "darwin" && runtime.GOOS != "linux" {
-		return
-	}
-	cmd := exec.Command("route", "delete", "-net", net, "meta")
-	_ = cmd.Run()
-	//if err := cmd.Run(); err != nil {
-	//	log.Errorln("[auto route]Failed to delete system route: %s, cmd: %s", err.Error(), cmd.String())
-	//}
-}
diff --git a/listener/tun/dev/dev_linux.go b/listener/tun/dev/dev_linux.go
index 4d63a87d..aeb90d4e 100644
--- a/listener/tun/dev/dev_linux.go
+++ b/listener/tun/dev/dev_linux.go
@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"github.com/Dreamacro/clash/log"
 	"net/url"
 	"os"
 	"os/exec"
@@ -38,7 +39,7 @@ type tunLinux struct {
 
 // OpenTunDevice return a TunDevice according a URL
 func OpenTunDevice(tunAddress string, autoRoute bool) (TunDevice, error) {
-	deviceURL, _ := url.Parse("dev://meta")
+	deviceURL, _ := url.Parse("dev://utun")
 	mtu, _ := strconv.ParseInt(deviceURL.Query().Get("mtu"), 0, 32)
 
 	t := &tunLinux{
@@ -62,7 +63,7 @@ func OpenTunDevice(tunAddress string, autoRoute bool) (TunDevice, error) {
 		}
 
 		if autoRoute {
-			SetLinuxAutoRoute()
+			log.Warnln("linux unsupported automatic route")
 		}
 		return dev, nil
 	case "fd":
@@ -76,7 +77,7 @@ func OpenTunDevice(tunAddress string, autoRoute bool) (TunDevice, error) {
 			return nil, err
 		}
 		if autoRoute {
-			SetLinuxAutoRoute()
+			log.Warnln("linux unsupported automatic route")
 		}
 		return dev, nil
 	}
@@ -105,9 +106,6 @@ func (t *tunLinux) IsClose() bool {
 
 func (t *tunLinux) Close() error {
 	t.stopOnce.Do(func() {
-		if t.autoRoute {
-			RemoveLinuxAutoRoute()
-		}
 		t.closed = true
 		t.tunFile.Close()
 	})