Keepalived preempts

Hello all,

I'm seeing strange VRRP preempt behavior on keepalived 1.2.16 on ubuntu
14.04 LTS.  Both boxes have priority 100 and nopreempt.

10.84.128.202 was master, 10.84.129.151 was backup.  I rebooted the
backup box, and when it returned, it preempted.

Config is simple:
vrrp_instance instance0 {
    state BACKUP
    interface eth0
    unicast_src_ip 10.84.129.151
    unicast_peer {
        10.84.128.202
    }
    virtual_router_id 1
    priority 100
    nopreempt
    notify_master /etc/keepalived/master.sh
    notify_backup /etc/keepalived/backup.sh
    notify_fault /etc/keepalived/fault.sh
}

Peer config is identical but unicast IPs are swapped.  I normally use AH
auth, but it's disabled to simplify troubleshooting - that hasn't
helped.  Maybe I've done something else wrong?

Here's the startup logs from 10.84.129.151:
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived[1092]: Starting Keepalived v1.2.16 (08/04,2015)
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived[1093]: Starting Healthcheck child process, pid=1094
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived[1093]: Starting VRRP child process, pid=1095
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Registering Kernel netlink reflector
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Registering Kernel netlink command channel
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Registering gratuitous ARP shared channel
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Initializing ipvs 2.6
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Opening file '/etc/keepalived/keepalived.conf'.
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Configuration is using : 60216 Bytes
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Using LinkWatch kernel netlink reflector...
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: VRRP_Instance(instance0) Entering BACKUP STATE
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_vrrp[1095]: Opening script file /etc/keepalived/backup.sh
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Registering Kernel netlink reflector
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Registering Kernel netlink command channel
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Opening file '/etc/keepalived/keepalived.conf'.
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Configuration is using : 5437 Bytes
> Sep 16 14:55:21 ip-10-84-129-151 Keepalived_healthcheckers[1094]: Using LinkWatch kernel netlink reflector...
> Sep 16 14:55:24 ip-10-84-129-151 Keepalived_vrrp[1095]: VRRP_Instance(instance0) Transition to MASTER STATE
> Sep 16 14:55:25 ip-10-84-129-151 Keepalived_vrrp[1095]: VRRP_Instance(instance0) Entering MASTER STATE
> Sep 16 14:55:25 ip-10-84-129-151 Keepalived_vrrp[1095]: Opening script file /etc/keepalived/master.sh

Here's the preempt logs from 10.84.128.202:
> Sep 16 14:55:25 ip-10-84-128-202 Keepalived_vrrp[25564]: VRRP_Instance(instance0) Received higher prio advert
> Sep 16 14:55:25 ip-10-84-128-202 Keepalived_vrrp[25564]: VRRP_Instance(instance0) Entering BACKUP STATE
> Sep 16 14:55:25 ip-10-84-128-202 Keepalived_vrrp[25564]: Opening script file /etc/keepalived/backup.sh

Ross

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