Yeah, Undernet doesn't have on-network registrations. It's a very poor setup, but that's how they do it. The solution there is really just to ask Undernet to update their webpage to send the registrations as UTF8. That shouldn't be difficult for them to change if people start requesting it. It shouldn't even require any ircd changes.
It might even take it as UTF8 if you have your browser set to Unicode instead of a codepage, but I haven't ever tried that, so I really don't know. It's still something Undernet should set up on their website even if it is that easy to do locally.
