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pimd, pim6d: Fix RP Unknown IIF

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When route to RP is having nexthop secndary address,
neighborship is built with primary address,
then pim_neighbor_find() fails, which causes RP IIF
Unknown.

Fix:
Verify pim neighborship on the RP connected interface.

Issue: #11526

Signed-off-by: Sarita Patra <saritap@vmware.com>
(cherry picked from commit ae5bcac0ae)
This commit is contained in:
Sarita Patra 2022-10-18 16:27:14 -07:00 committed by Mergify
parent ca163640f1
commit bfd120c5f3
1 changed files with 4 additions and 3 deletions
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7
pimd/pim_nht.c
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@ -568,7 +568,7 @@ static int pim_ecmp_nexthop_search(struct pim_instance *pim,
src)) { src)) {
nbr = pim_neighbor_find( nbr = pim_neighbor_find(
nexthop->interface, nexthop->interface,
nexthop->mrib_nexthop_addr); nexthop->mrib_nexthop_addr, true);
if (!nbr if (!nbr
&& !if_is_loopback(nexthop->interface)) { && !if_is_loopback(nexthop->interface)) {
if (PIM_DEBUG_PIM_NHT) if (PIM_DEBUG_PIM_NHT)
@ -610,7 +610,7 @@ static int pim_ecmp_nexthop_search(struct pim_instance *pim,
#else #else
pim_addr nhaddr = nh_node->gate.ipv6; pim_addr nhaddr = nh_node->gate.ipv6;
#endif #endif
nbrs[i] = pim_neighbor_find(ifps[i], nhaddr); nbrs[i] = pim_neighbor_find(ifps[i], nhaddr, true);
if (nbrs[i] || pim_if_connected_to_source(ifps[i], src)) if (nbrs[i] || pim_if_connected_to_source(ifps[i], src))
num_nbrs++; num_nbrs++;
} }
@ -961,7 +961,8 @@ int pim_ecmp_nexthop_lookup(struct pim_instance *pim,
pim->vrf->vrf_id); pim->vrf->vrf_id);
if (ifps[i]) { if (ifps[i]) {
nbrs[i] = pim_neighbor_find( nbrs[i] = pim_neighbor_find(
ifps[i], nexthop_tab[i].nexthop_addr); ifps[i], nexthop_tab[i].nexthop_addr, true);
if (nbrs[i] || pim_if_connected_to_source(ifps[i], src)) if (nbrs[i] || pim_if_connected_to_source(ifps[i], src))
num_nbrs++; num_nbrs++;
} }