Fixes a bug with neighbor cache and overlapping IP prefixes. (8ecbaf9c) · Commits · 戴 / Bird

nest/neighbor.c

+16 −2

Original line number	Diff line number	Diff line
		@@ -114,7 +114,7 @@ neighbor *
		neigh_find2(struct proto p, ip_addr a, struct iface *ifa, unsigned flags)
		{
		neighbor *n;
		int class, scope = -1; ;
		int class, scope = -1;
		unsigned int h = neigh_hash(p, a);
		struct iface *i;

		@@ -240,7 +240,21 @@ neigh_down(neighbor *n)
		n->proto->neigh_notify(n);
		rem_node(&n->n);
		if (n->flags & NEF_STICKY)
		{
		add_tail(&sticky_neigh_list, &n->n);

		/* Respawn neighbor if there is another matching prefix */
		struct iface *i;
		int scope;

		if (!n->iface)
		WALK_LIST(i, iface_list)
		if ((scope = if_connected(&n->addr, i)) >= 0)
		{
		neigh_up(n, i, scope);
		return;
		}
		}
		else
		sl_free(neigh_slab, n);
		}