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zebra: Prevent crash in the off-chance we make a mistake

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Prevent zebra from crashing for when the nexthop vrf has
changed in some manner and the lookup fails.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-03-27 14:59:05 -04:00
parent 049e899eb2
commit 4c66767c10
1 changed files with 8 additions and 2 deletions
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10
zebra/zebra_vty.c
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@ -1108,7 +1108,10 @@ static void vty_show_ip_route_detail(struct vty *vty, struct route_node *rn,
struct vrf *vrf =
vrf_lookup_by_id(nexthop->vrf_id);
vty_out(vty, "(vrf %s)", vrf->name);
if (vrf)
vty_out(vty, "(vrf %s)", vrf->name);
else
vty_out(vty, "(vrf UKNOWN)");
}
if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE))
@ -1468,7 +1471,10 @@ static void vty_show_ip_route(struct vty *vty, struct route_node *rn,
if (nexthop->vrf_id != re->vrf_id) {
struct vrf *vrf = vrf_lookup_by_id(nexthop->vrf_id);
vty_out(vty, "(vrf %s)", vrf->name);
if (vrf)
vty_out(vty, "(vrf %s)", vrf->name);
else
vty_out(vty, "(vrf UKNOWN)");
}
if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))