Origin: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=713454

Index: b/modules/ntrack-libnl.c
===================================================================
--- a/modules/ntrack-libnl.c
+++ b/modules/ntrack-libnl.c
@@ -530,7 +530,8 @@ update_connectivity (ntrack_monitor_t *s
 		op_default_route_disappeared ((struct _ntrack_monitor_arch*) self, nl_info);
 	} else if (nl_info->topmost_route && topmost_route) {
 		int diff_bits;
-		if ((diff_bits = (route_obj_ops.oo_id_attrs | ROUTE_ATTR_OIF
+                struct nl_object *nl_obj = nl_object_alloc(&route_obj_ops);
+		if ((diff_bits = (nl_object_get_id_attrs(nl_obj) | ROUTE_ATTR_OIF
 		                  | ROUTE_ATTR_GATEWAY) &
 		                  nl_object_diff (OBJ_CAST (nl_info->topmost_route),
 		                                  OBJ_CAST (topmost_route)))) {
@@ -556,6 +557,7 @@ update_connectivity (ntrack_monitor_t *s
 			nl_info->topmost_route = topmost_route;
 			op_default_route_changed ((struct _ntrack_monitor_arch*) self, nl_info);
 		}
+                nl_object_free(nl_obj);
 	} else {
 		/* on first run of update_connectivity we emit a disappeared signal if no
 		 * new topmost_route was found; in this way monitors can update their initial