I believe Consul can do this and it's a pretty nice capability but the effort of retrofitting it onto things that just assume well known ports would be phenomen

I believe Consul can do this and it's a pretty nice capability but the effort of retrofitting it onto things that just assume well known ports would be phenomenal. I mean even if you know you want http the "right" thing to do is look up the port number in /etc/services but who ever does that? We all just hardcode 80. So that's another potential technique that we can't use...