This RowStatus object adds or removes a tracked-interface entry for a VRRP virtual router: setting it to active(1) or createAndGo(4) adds the specified interface to the set this virtual router monitors, while destroying the entry removes it from tracking. An administrator configures exactly which interfaces a VRRP instance should watch for failover purposes using this object, since only tracked interfaces going down will trigger the associated priority reduction. For example, an administrator might track only the router's primary WAN interface here, so a failure on that specific link, rather than any interface at all, triggers this router to yield master status to its backup.