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...added #437 to my build. It works, somehow... I cannot imagine a scenario for any (resolver?) software to implicitly send a SOA probe over UDP to port 853 / not port 53 Could you clarify this, please? There is also a difference to the same solution for that problem in unbound: While "netstat -lnpu" does not show open UDP sockets for DoT and DoH on unbound, NSD is different: "netstat -lnpu" shows an open Port for Do53 and DoT. Do53/UDP does timeout on Port 853, though. It looks like #437 works very different the the code implemented in unbound. Andreas

...53 / not port 53 > Could you clarify this, please? Unbound is an example when configured with auth zones, it will send the SOA prove over UDP before starting a zone transfer. > > There is also a difference to the same solution for that problem in > unbound: > While "netstat -lnpu" does not show open UDP sockets for DoT and DoH on > unbound, NSD is different: > "netstat -lnpu" shows an open Port for Do53 and DoT. Do53/UDP does > timeout on Port 853, though. Just to be clear with terminology (Do53 does not help if the port is not 53 :), you want to...

Hi Andreas, On 16/04/2025 23:17, A. Schulze via nsd-users wrote: > 4. any chance, that https://github.com/NLnetLabs/nsd/pull/437 find it's > way in 4.12? > ?? a similar change in active in unbound-1.23.0rc2 and works well there. This change was heading to 4.12 but we pulled it because it was breaking software that implicitly sends the SOA probe over UDP. Maybe a more lenient