--- x/net/rose/rose_route.c
+++ y/net/rose/rose_route.c
@@ -500,8 +500,10 @@ void rose_rt_device_down(struct net_devi
 			for (i = 0; i < t->count; i++) {
 				if (t->neighbour[i] != s)
 					continue;
+				t->neighbour[i] = NULL;
 
 				t->count--;
+				continue;
 
 				switch (i) {
 				case 0:
@@ -689,6 +691,8 @@ struct rose_neigh *rose_get_neigh(rose_a
 	for (node = rose_node_list; node != NULL; node = node->next) {
 		if (rosecmpm(addr, &node->address, node->mask) == 0) {
 			for (i = 0; i < node->count; i++) {
+				if (!node->neighbour[i])
+					continue;
 				if (node->neighbour[i]->restarted) {
 					res = node->neighbour[i];
 					goto out;
@@ -700,6 +704,8 @@ struct rose_neigh *rose_get_neigh(rose_a
 		for (node = rose_node_list; node != NULL; node = node->next) {
 			if (rosecmpm(addr, &node->address, node->mask) == 0) {
 				for (i = 0; i < node->count; i++) {
+					if (!node->neighbour[i])
+						continue;
 					if (!rose_ftimer_running(node->neighbour[i])) {
 						res = node->neighbour[i];
 						goto out;