vrrp_instance INBAND {
    state BACKUP
    interface eth1
    virtual_router_id 51
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtural_ipaddress {
        192.168.100.100
    }
    track_interface {
        eth0
    }
}