> > > ... Do you have an example of a system/network that fails on punycode? > > Yes, an organization's internal network resolver or a user's local > resolver could reply to utf8 queries but not punycode queries. > > For example, adding the line: > > ? 10.99.99.1? ??.jp > > to /etc/hosts on Ubuntu 20.04 with resolver systemd-resolved > and running the test program [1] gives this output: > > ? error querying '??.jp': Unknown server error > > ? name '??.jp' has ip address 10.99.99.1 Thanks for the example, although it seems very contrived to me. Firefox will punycode the domain right after putting it into the address bar, for example, so any network that wants to support web browsing must use a punycoded version. I'm sure there are many other pieces of software that do the same. Your example doesn't really convince me that a Gemini browser is going to encounter a situation where doing a lookup using the punycoded domain name will be the wrong thing to do. It's not literally impossible for that to be the case, but I don't really see it being an issue at all. makeworld
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