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105 points venusgirdle | 1 comments | 28 Feb 25 10:39 UTC | HN request time: 0.215s | source

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adamrmcd ◴[02 Mar 25 20:59 UTC] No.43235014[source]▶

>>43204091 (OP) #

Neat idea, but my takeaway is I had no idea that DNS also runs on UDP/53.. I always thought it was TCP only! #TIL

The author cites it as performance reasons, but at this scale, even the uplink to cloudflare, would be negligible, no?

replies(4): >>43235271 #>>43235315 #>>43235633 #>>43239993 #

1. loloquwowndueo ◴[02 Mar 25 21:22 UTC] No.43235271[source]▶

>>43235014 #

That’s odd because DNS is the quintessential UDP-based protocol. “From the time of its origin in 1983 the DNS has used the User Datagram Protocol (UDP) for transport over IP.”. DNS over TCP was only introduced as a later addition (admittedly, in 1989).

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Turning my ESP32 into a DNS sinkhole to fight doomscrolling