--- modules/ntrack-libnl.c~	2011-03-27 07:37:02.000000000 +0800
+++ modules/ntrack-libnl.c	2011-04-09 23:11:33.919862769 +0800
@@ -375,6 +375,7 @@
 get_nl_link_by_index (ntrack_monitor_t *self, ntrack_list_t *linklist, int iindex)
 {
 	ntrack_list_t *i = linklist;
+	ntrack_list_t *head = NULL;
 	struct rtnl_link *result = NULL;
 	while (i) {
 		struct rtnl_link *link = i->data;
@@ -384,6 +385,10 @@
 		}
 		if (rtnl_link_get_ifindex(link) > iindex)
 			break;
+		if (head == i)
+			break;
+		if (head == NULL)
+			head = i;
 		i = i->next;
 	}
 	return result;