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Been *slowly* making my way through the slides and audio of #fosdem2023 (I speed scanned the automated transcripts a couple of weeks ago).

I finally hit @pgl's 👍🏽 😄 “Bizarre DNS” talk:
fosdem.org/2023/schedule/event

I thought I kept good track of odd DNS usage, but I didn't know about the Google and OpenDNS/Umbrella “my external IP” DNS hack.

Threw together a super tiny #golang project that uses both hacks: github.com/hrbrmstr/extip

fosdem.orgFOSDEM 2023 - Bizarre and Unusual Uses of DNS
John Payne :procella:

@hrbrmstr @pgl have you seen Akamai's? Gives the unicast IP (v4 or v6) of the recursive nameserver, any ECS in the request and a representative IP from the ECS subnet - akamai.com/blog/developers/int (if you query directly against the auth servers the NS result will be your external IP of course) - it replaced whoami.akamai.net which was a quick operationalization of a stupid perl script I put together in the very early 2000s 👴

@pgl @john And, support for the akamai hack service is now in extip.

@pgl @john Aaaand, now anyone can wield these dark magics:

github.com/hrbrmstr/extip-svr

```
$ dig +short myip.is TXT @ip.rudis.net -4
"73.16.132.205"
```

It has not been tested heavily.

I guess we'll also see how long the server I stood up works for. 🙃

GitHubGitHub - hrbrmstr/extip-svrContribute to hrbrmstr/extip-svr development by creating an account on GitHub.