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Merge pull request #8062 from donaldsharp/bgp_blackhole

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bgpd: Blackhole nexthops are not reachable
This commit is contained in:
Russ White 2021-02-17 15:47:51 -05:00 committed by GitHub
commit 95e336226e
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1 changed files with 11 additions and 3 deletions
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12
bgpd/bgp_nht.c
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@ -843,9 +843,17 @@ static void evaluate_paths(struct bgp_nexthop_cache *bnc)
if (peer) { if (peer) {
int valid_nexthops = bgp_isvalid_nexthop(bnc); int valid_nexthops = bgp_isvalid_nexthop(bnc);
if (valid_nexthops) if (valid_nexthops) {
/*
* Peering cannot occur across a blackhole nexthop
*/
if (bnc->nexthop_num == 1
&& bnc->nexthop->type == NEXTHOP_TYPE_BLACKHOLE) {
peer->last_reset = PEER_DOWN_WAITING_NHT;
valid_nexthops = 0;
} else
peer->last_reset = PEER_DOWN_WAITING_OPEN; peer->last_reset = PEER_DOWN_WAITING_OPEN;
else } else
peer->last_reset = PEER_DOWN_WAITING_NHT; peer->last_reset = PEER_DOWN_WAITING_NHT;
if (!CHECK_FLAG(bnc->flags, BGP_NEXTHOP_PEER_NOTIFIED)) { if (!CHECK_FLAG(bnc->flags, BGP_NEXTHOP_PEER_NOTIFIED)) {