Don't use the word "abuse" unless it's in the sense of "SOAP and XHR are an 'abuse' of HTTP".
The IN (internet) class is the evolutionary "towering cedar" of the moment, but there were the CH (chaos) and HS (hesiod) classes during the cambrian period; you might review those project's purposes and goals.
Arguably the abuse today is in the form of things like ten millisecond windows for retransmission and qname minimization which optimize specifically for cloud-based web services ("happy eyeballs") at the expense of all else (and seemingly without awareness of e.g. buffer bloat). There's a whole world outside of A / AAAA resolution.
It's not unheard of to see two people with pocket protectors having a knife fight (or at least poking at each other with pencils) in the hallway at an Internet confab. "RFC" stands for "Request For Comments" and BCPs (Best Current Practice) are routinely ignored.
I watched the video. He's trolling his hypothesized pearl clutchers. I'm sure I share the same critics. Actually most of the talk is open source intelligence basics and utilization of DNS for nonpublic purposes.
Good sell regarding hotel networks as adversaries. :-p
It's time. Start the long walk. We are migrating to meet the skexies, you're welcome to join us.
"Toy server" with 6 million queries and the talk is not about keeping the server up. We're done here; you can find the mike somewhere on the floor.
Fair point. Probably showing my lack of experience previous to the millennium, at most it was debugging res_mkquery for hours because of what I was passing as a class, iirc C_ANY rather than C_IN.
ANY is definitely a trap for the overconfident, as it is a qtype without a corresponding rdtype. Is there a wildcard for class? You got me there, I'd have to go look it up and I'm up to my armpits in something else at the moment.
https://www.num.uk/
Though going by their roadmap, it may be they're no longer maintaining the service.