VRRP_CONF_PREEMPT
if (mask & VRRP_CONF_PREEMPT)
if (mask & create_mask & VRRP_CONF_PREEMPT)
if (mask & modify_mask & VRRP_CONF_PREEMPT)
if (mask & VRRP_CONF_PREEMPT)
mask |= VRRP_CONF_PREEMPT;