VIP managed by Keepalived disappears...

I have a strange situation that I don't understand where the VIP that is managed by keepalived disappears. Here's the setup:

RHEL 6.5 x86_64
Keepalived 1.2.13

server A:

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    lvs_sync_daemon_interface eth0
    virtual_router_id 51
    priority 250
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass xxxxxx
    }
    virtual_ipaddress {
        10.180.88.35
    }
}

server B:

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    lvs_sync_daemon_interface eth0
    virtual_router_id 51
    priority 150
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass xxxxxx
    }
    virtual_ipaddress {
        10.180.88.35
    }
}

Here's the scenario:

step 1. : start keepalived on server A and server B. VIP shows up on server A
step 2. : reboot server A. VIP moves to server B
step 3. : server A completes boot cycle. VIP moves back to server A from server B
step 4. : reboot server B. as server B goes offline, VIP remains on server A
step 5. : server B boots up. VIP remains on server A.
step 6. : reboot server B. as server B goes offline, VIP disappears on server A.
step 7. : server B boots up. VIP remains lost (neither server A nor B). both servers running keepalived but VIP is lost

At this point, if I restart keepalived on server A, the VIP comes back on server A. If I restart keepalived on server B, nothing happens.

What's the problem? Is this a bug? How do I diagnose further?

-Bond

------------------------------------------------------------------------------
Open source business process management suite built on Java and Eclipse
Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft

_______________________________________________
Keepalived-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/keepalived-devel