[Feature][ZXW-136]merge P50U04 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: I7b6a8e22777591bc7a9ede91d6695d9415116f81
diff --git a/ap/app/Script/scripts/psext_down_ipv6.sh b/ap/app/Script/scripts/psext_down_ipv6.sh
index 2ce0d21..c738a77 100755
--- a/ap/app/Script/scripts/psext_down_ipv6.sh
+++ b/ap/app/Script/scripts/psext_down_ipv6.sh
@@ -39,7 +39,7 @@
 	#if [ $? -ne 0 ];then
 	#    echo "Error: ip -6 addr del $ps_ip/126 dev $ps_if  failed." >> $test_log
     #fi
-    ip -6 route del default
+    ip -6 route del default dev $ps_if
 	#if [ $? -ne 0 ];then
 	#    echo "Error: ip -6 route del default failed." >> $test_log
     #fi