diff --git a/main.go b/main.go
index 34fd6b9..f302671 100644
--- a/main.go
+++ b/main.go
@@ -26,31 +26,28 @@ var (
 	flagAddr = flag.String("addr", "", "addr set")
 )
 
+func startCard() {
+	cmdstr := fmt.Sprintf("ip addr add %s dev stun", *flagAddr)
+	log.Println(cmdstr)
+	cmd := strings.Split(cmdstr, " ")
+	err := exec.Command(cmd[0], cmd[1:]...).Run()
+	if err != nil {
+		log.Panic(err)
+	}
+
+	cmdstr = "ip link set dev stun up"
+	cmd = strings.Split(cmdstr, " ")
+	err = exec.Command(cmd[0], cmd[1:]...).Run()
+	if err != nil {
+		log.Panic(err)
+	}
+}
 func testmain() {
 
 	flag.Parse()
 
-	var a chan bool = make(chan bool)
-	go func() {
-		<-a
-		cmdstr := fmt.Sprintf("ip addr add %s dev stun", *flagAddr)
-		log.Println(cmdstr)
-		cmd := strings.Split(cmdstr, " ")
-		err := exec.Command(cmd[0], cmd[1:]...).Run()
-		if err != nil {
-			log.Panic(err)
-		}
-
-		cmdstr = "ip link set dev stun up"
-		cmd = strings.Split(cmdstr, " ")
-		err = exec.Command(cmd[0], cmd[1:]...).Run()
-		if err != nil {
-			log.Panic(err)
-		}
-	}()
-
 	config := water.Config{
-		DeviceType: water.TUN,
+		DeviceType: water.TAP,
 	}
 	config.Name = "stun"
 
@@ -58,10 +55,12 @@ func testmain() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	a <- true
-	var frame ethernet.Frame
 
+	startCard()
+
+	var frame ethernet.Frame
 	for {
+
 		frame.Resize(1500)
 		n, err := ifce.Read([]byte(frame))
 		if err != nil {
diff --git a/netcard.go b/netcard.go
index d0438a3..65f2327 100644
--- a/netcard.go
+++ b/netcard.go
@@ -145,8 +145,9 @@ func NewNetCard() *NetCard {
 	config := water.Config{
 		DeviceType: water.TUN,
 		PlatformSpecificParams: water.PlatformSpecificParams{
-			Name:    "stun",
-			Persist: true,
+			Name:       "stun",
+			Persist:    true,
+			MultiQueue: true,
 		},
 	}
 
@@ -219,6 +220,7 @@ func (nc *NetCard) runRead() {
 				bytesMap[realAddr] = buffer
 			}
 
+			ifce.Write([]byte(rframe))
 			buffer.BytesArray = append(buffer.BytesArray, []byte(rframe))
 		}