One unique short url to access the application (ex: kara.moe)
Having to write something like 192.168.0.12:1337 can be a burden for some users, especially on mobile. It's notably the case in "public" like during a convention.
For a given instance, when internet is available (or if admin activates some setting ?), KM could post its local IP adress to kara.moe The website then associates the public IP with the local network IP. Then, when anyone connects to kara.moe, redirect them to the associated local IP instantly.
Since people on the same network share the same IP, everyone connects to the application
We'll have to check how it works for the port however, I'm not too sure how redirection works on that matter.