[cbrewster]

Hi, author here! tptacek is right on the money. The authority server is really small and simple, and writing it in Go meant we had access to our existing internal packages that had the logic to fetch the data we need for each DNS query. This seemed like the most straight-forward path.

[rgacogne]

Hi, PowerDNS dev here! Would you mind fixing your handling of NODATA answers, which are currently lacking the AA bit and a SOA record in authority? It does not seem to affect all instances, so perhaps it only happens on the legacy infra. You can get the details here, for example: https://dnsviz.net/d/b.b.b.b.b.b.b.b.a.a.a.a.a.a.nope.repl.c...

[cbrewster]

Nice catch! I'll get that fixed up. Thanks :)

[tptacek]

miekg/dns is really excellent. Our custom DNS server is written in Rust (with the NLNet libraries, which are also great), but I used miekg/dns to throw together a DNS telemetry system that we use to keep metrics on our DNS (and UDP) service from around the world using off-net hosts, which sounds cool to type out but was an absurdly simple coding project because of how good the libraries are.

More people should do cool weird stuff with DNS. (And Replit should host stuff on Fly! But also the DNS stuff we're talking about.)

It's a great post, thanks for writing it.

[ignoramous]

> And Replit should host stuff on Fly! But also the DNS stuff we're talking about.

Having used both, I'd wager replit competes with fly.

[tptacek]

That wasn't a dig!