diff --git a/README.md b/README.md
index 27015c6..4889fb5 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ Usage of ./vtun:
         protocol ws/wss/udp (default "wss")
   -s string
         server address (default ":3001")
+  -d string
+        dns address (default "8.8.8.8:53")
   -P    enable pporf server on :6060
   -S    server mode
   -g    client global mode
diff --git a/common/config/config.go b/common/config/config.go
index 5c2b775..7be515f 100644
--- a/common/config/config.go
+++ b/common/config/config.go
@@ -13,6 +13,7 @@ type Config struct {
 	CIDR       string
 	Key        string
 	Protocol   string
+	DNS        string
 	ServerMode bool
 	GlobalMode bool
 	Obfuscate  bool
diff --git a/common/netutil/netutil.go b/common/netutil/netutil.go
index e4ab23b..0e96e89 100644
--- a/common/netutil/netutil.go
+++ b/common/netutil/netutil.go
@@ -40,6 +40,13 @@ func GetAddr(b []byte) (srcAddr string, dstAddr string) {
 }
 
 func ConnectServer(config config.Config) net.Conn {
+	net.DefaultResolver = &net.Resolver{
+		PreferGo: true,
+		Dial: func(ctx context.Context, network, _ string) (net.Conn, error) {
+			var dialer net.Dialer
+			return dialer.DialContext(ctx, network, config.DNS)
+		},
+	}
 	scheme := "ws"
 	if config.Protocol == "wss" {
 		scheme = "wss"
diff --git a/main.go b/main.go
index a34b8f8..d1612a9 100644
--- a/main.go
+++ b/main.go
@@ -17,6 +17,7 @@ func main() {
 	flag.StringVar(&config.ServerAddr, "s", ":3001", "server address")
 	flag.StringVar(&config.Key, "k", "6w9z$C&F)J@NcRfWjXn3r4u7x!A%D*G-", "key")
 	flag.StringVar(&config.Protocol, "p", "wss", "protocol ws/wss/udp")
+	flag.StringVar(&config.DNS, "d", "8.8.8.8:53", "dns address")
 	flag.BoolVar(&config.ServerMode, "S", false, "server mode")
 	flag.BoolVar(&config.GlobalMode, "g", false, "client global mode")
 	flag.BoolVar(&config.Obfuscate, "o", false, "enable data obfuscation")
diff --git a/tun/tun.go b/tun/tun.go
index 1f38237..912cedd 100644
--- a/tun/tun.go
+++ b/tun/tun.go
@@ -40,8 +40,8 @@ func configTun(config config.Config, iface *water.Interface) {
 			if physicalIface != "" && serverIP != "" {
 				execCmd("/sbin/ip", "route", "add", "0.0.0.0/1", "dev", iface.Name())
 				execCmd("/sbin/ip", "route", "add", "128.0.0.0/1", "dev", iface.Name())
-				execCmd("/sbin/ip", "route", "delete", strings.Join([]string{serverIP, "32"}, "/"), "via", gateway, "dev", physicalIface)
 				execCmd("/sbin/ip", "route", "add", strings.Join([]string{serverIP, "32"}, "/"), "via", gateway, "dev", physicalIface)
+				execCmd("/sbin/ip", "route", "add", strings.Join([]string{strings.Split(config.DNS, ":")[0], "32"}, "/"), "via", gateway, "dev", physicalIface)
 			}
 		}
 
@@ -54,6 +54,7 @@ func configTun(config config.Config, iface *water.Interface) {
 			serverIP := netutil.LookupIP(strings.Split(config.ServerAddr, ":")[0])
 			if physicalIface != "" && serverIP != "" {
 				execCmd("route", "add", serverIP, localGateway)
+				execCmd("route", "add", strings.Split(config.DNS, ":")[0], localGateway)
 				execCmd("route", "add", "0.0.0.0/1", "-interface", iface.Name())
 				execCmd("route", "add", "128.0.0.0/1", "-interface", iface.Name())
 				execCmd("route", "add", "default", gateway.String())