Comment 2 for bug 1796703

Thx Andrii for reporting this issue.
In fact it's hard to say why it happened like that.
About Your question where keepalived.conf is prepared, it's in https://github.com/openstack/neutron/blob/master/neutron/agent/linux/keepalived.py which is used later by this class: https://github.com/openstack/neutron/blob/master/neutron/agent/l3/ha_router.py#L60