[Feature][ZXW-237]merge P54U03 version

Only Configure: No
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: Id39ef8b992af691eab09c01d4ea26da89e5f4049
diff --git a/ap/app/Script/scripts/wan_ipv6_config.sh b/ap/app/Script/scripts/wan_ipv6_config.sh
index 1c1e278..9098fab 100755
--- a/ap/app/Script/scripts/wan_ipv6_config.sh
+++ b/ap/app/Script/scripts/wan_ipv6_config.sh
@@ -264,7 +264,23 @@
     
     ndp_kill
     zte_ndp -a -s br0 -d "$wan_if" -l $ndp_log &
-
+    xlat_enable=`nv get xlat_enable`
+    if [ "-$xlat_enable" == "-1" ];then
+	route_info=`route|grep default`
+	if [ "$route_info" == "" ];then
+		xlat_prefix=`nv get xlat_prefix`
+		#chmod 777 /dev/net/tun
+		if [ "$xlat_prefix" == "" ];then
+			clatd -i $defwan6_if &
+		else
+			clatd -i $defwan6_if -p $xlat_prefix &
+		fi		
+		echo 1 > /proc/sys/net/ipv4/ip_forward
+		iptables -t nat -A POSTROUTING -o v4-$defwan6_if -j MASQUERADE
+		sleep 1
+		ip route add default dev v4-$defwan6_if
+	fi
+    fi
 }
 
 ############ipv6 shell entry#################