Comment 3 for bug 1375625

Unfortunately it will not solve this problem. Adding new interface will give us the same result. Right now keepalived monitor only one interface specified in NS for router. Adding any additional will not solve the problem. We need extend the verification of connectivity on multiple NICs but because of the NS we cannot add any additional interfaces to track_interface section because they're not available from that NS.
Because of that we need to introduce that functionality in other way - track_script gives us that possibility because we can run any bash script using that config file section - so we can run different ip/ping/ping6 commands to verify connectivity with GW, is interface is UP in multiple NS and in OVS if available.