When marking an IP for unicast, perhaps just generically mark the vlan for unicast?

[derwin12]

Perhaps more of a question but with more folks using hostnames rather than static IPs, in the multisync page "we" often mark an IP for the unicast sync. If the ip changes, do we lose that unicast selection? Could it be made such that you are simply marking the vlan
192.168.1.x for unicast so that if the IP changes it will still be "marked"?
Or does it already do this?