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vrrpd: try to bind interfaces on if_down notifications

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Normally we only opportunistically try to bind interfaces to VRRP
instances upon getting if_add and if_up notifications; now that Zebra
sends if_down notifications when interfaces change while they are down,
we should try to bind when we get those as well.

This solves a bug where VRRP would not bind and activate virtual routers
to valid interfaces because their MACs were changed to VRRP macs while
the interface was down.

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
This commit is contained in:
Quentin Young 2019-08-01 17:38:46 +00:00
parent 6f908ded80
commit 2e3d75646e
1 changed files with 4 additions and 0 deletions
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4
vrrpd/vrrp.c
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@ -2133,9 +2133,13 @@ void vrrp_if_down(struct interface *ifp)
struct listnode *ln;
struct list *vrs;
vrrp_bind_pending(ifp);
vrs = vrrp_lookup_by_if_any(ifp);
for (ALL_LIST_ELEMENTS_RO(vrs, ln, vr)) {
vrrp_check_start(vr);
if (vr->ifp == ifp || vr->v4->mvl_ifp == ifp
|| vr->v6->mvl_ifp == ifp) {
DEBUGD(&vrrp_dbg_auto,