Index: /src/router/services/services/igmp.c
===================================================================
--- /src/router/services/services/igmp.c	(revision 12002)
+++ /src/router/services/services/igmp.c	(revision 12003)
@@ -65,5 +65,5 @@
 	else
 	{
-        fprintf( fp, "quickleave\nphyint %s upstream  ratelimit 0  threshold 1\n",nvram_safe_get( "wan_iface" ) );
+        fprintf( fp, "quickleave\nphyint %s upstream  ratelimit 0  threshold 1\n",get_wan_face() );
 	}
     if( nvram_match( "block_multicast", "0" ) )