--- embedaddon/quagga/isisd/isis_route.c	2012/10/09 09:22:28	1.1.1.2
+++ embedaddon/quagga/isisd/isis_route.c	2013/07/21 23:54:38	1.1.1.3
@@ -438,7 +438,11 @@ isis_route_create (struct prefix *prefix, u_int32_t co
     route_node = route_node_get (area->route_table6[level - 1], prefix);
 #endif /* HAVE_IPV6 */
   else
-    return NULL;
+    {
+      isis_route_info_delete (rinfo_new);
+      return NULL;
+    }
+
   rinfo_old = route_node->info;
   if (!rinfo_old)
     {