[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.sh b/ap/app/Script/scripts/wan_ipv6.sh
index d1c1708..e1e60d1 100755
--- a/ap/app/Script/scripts/wan_ipv6.sh
+++ b/ap/app/Script/scripts/wan_ipv6.sh
@@ -142,7 +142,7 @@
             fi
 			
 			killall -9 clatd
-			clatd -i $wan_if -p 1:1:1:123:: &
+			#clatd -i $wan_if -p 1:1:1:123:: &
 			
 			if [ "-$c_id" != "-$def_cid" ]; then
 				wan_pri=`nv get $1"_priority"`
@@ -237,7 +237,7 @@
                 fi
 				
 				killall -9 clatd
-				clatd -i $wan_if -p 1:1:1:123:: &
+				#clatd -i $wan_if -p 1:1:1:123:: &
 			else
 				echo "the zte_ipv6_slaac fail"
 				nv set $wan_if"_ipv6_state"="dead"
@@ -297,6 +297,9 @@
 	if [ "-$c_id" == "-0" -o "-$c_id" == "-$def_cid" ]; then
 		echo 0 > /proc/sys/net/ipv6/conf/all/forwarding  
 		ip -6 route del default
+		ip route del default
+		killall clatd
+		iptables -t nat -D POSTROUTING -o v4-$wan_if -j MASQUERADE
 		#if [ $? -ne 0 ];then
 	        #echo "Error: ip -6 route del default failed." >> $test_log
         #fi