From: Ondrej Zajicek (work) <santiago@crfreenet.org>
Date: Sun, 17 Feb 2019 18:11:19 +0000 (+0100)
Subject: OSPF: Fix wrong LSA collisions detection
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=45426652a27ed03595fd9ee78b74c6a919b9daaf;p=thirdparty%2Fbird.git

OSPF: Fix wrong LSA collisions detection

In some circumstances (old LSA flushed but not acknowledged and not
removed) origination of a new LSA may wrongly triggers LSA collision
code. The patch fixes that.

Thanks to Asbjorn Mikkelsen for the bugreport and @mdelagueronniere
for the original patch.
---

diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index 717c82808..b0ff055ae 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -404,6 +404,8 @@ ospf_refresh_lsa(struct ospf_proto *p, struct top_hash_entry *en)
 void
 ospf_flush_lsa(struct ospf_proto *p, struct top_hash_entry *en)
 {
+  en->nf = NULL;
+
   if (en->next_lsa_body)
   {
     mb_free(en->next_lsa_body);