Prior to this update, the fix for bug BZ#1215177 added the "garp_master_repeat 5" and "garp_master_refresh 10" options to Keepalived configuration. This resulted in two issues:
1. Keepalived never stopped broadcasting garps to the network.
2. Due to a Keepalived bug, instances lost their IPv6 default gateway.
Consequently, it was determined that the IPv6 router was not working correctly with VRRP.
This update resolves this issue by dropping the repeat and refresh Keepalived options. This fixes the IPv6 bug but re-introduces bug 1215177. To resolve this, use the delay option instead.
As a result of this update, Keepalived sends a GARP when it transitions to MASTER, and then
waits a number of seconds (determined by the delay option), and sends a GARP again. This uses an aggressive 'delay' setting to make sure that when the node boots, and the L3/L2 agents start, the L2 agent has enough time to wire the ports.