[Keepalived-devel] Mac address issue.

[Paul G. <gi...@tc...>]

Testing out keepalived operation as regard to mac addresses on failover
(2.0.7), I think I found an issue? If I shut down the interface that VRRP
is configured on (the current master) I can see a gratuitous arp being sent
correctly over the network, so that when I ping from a client the mac
address of the new master is shown when queried (the physical interfaces
mac).

However if I bring back up the original interface and that system becomes
master again there is no gratuitous arp sent. So if I ping and query I can
still see the mac address of the backup physical interface, when the mac
should be updated to the new/previous master.

This is not an issue if I am bringing up and down tracked interfaces to
change who is master, the mac is correctly updated each time.

I also looked into using use_vmac due to this (and because the above method
takes 9-10 seconds for failover to occur which should be faster with vmac),
and while my kernel (4.7.8) appears to have a version of the required patch
I still get an error.

Tue Oct 23 10:07:51 2018: Netlink: error: Operation not supported,
type=(16), seq=1540289275, pid=0
Tue Oct 23 10:07:51 2018: (vSwitch1_vrrp1): Unable to create VMAC
interface vrrp.1
Tue Oct 23 10:07:51 2018: (vSwitch1_vrrp1) entering FAULT state


--
Paul