Winfried Angele

Thanks for investigation, @fredmorcos! I'll try to further isolate the issue so it's hopefully easier to reproduce. Unfortunately I won't be able to do that for a few days. But...

Hello @fredmorcos, I've updated the issue description and the steps to reproduce it. Also I've attached the build-log. I hope this helps you. I've no answer for questions 3 and...

> If possible, whether the problem also exists on another distribution. I tried it now on a Ubuntu 20.04 "Focal Fossa" with the 4.7.1 package from https://repo.powerdns.com/. And I was...

> could you provide the contents of recursor.conf please? It is empty. See "Steps to reproduce": `> recursor.conf`

> I don't see a git clone or git checkout command in your build log, are you cloning from Github? We built with this source code: https://downloads.powerdns.com/releases/pdns-recursor-4.7.1.tar.bz2 > Are you...

And by the way, not only the Recursor doesn't reply to DNS queries in the error case, it does also not respond to socket connections any more: ``` # ../rec_control...

The problem is not "persistent". It does automatically recover after some time.

I did an experiment on the IP address "194.25.2.129". If this server drops the SYN packets, the Recursor stops working after `reload-lua-config`. But if this sever responds with reset packets...

Hi @fredmorcos, > @paddg Could you test [this branch](https://github.com/fredmorcos/pdns/tree/fred/11795-fix-recursor-not-responsive-after-config-reload), please? Thank you! Done. I did ``` git clone https://github.com/fredmorcos/pdns.git pdns-git-repo cd pdns-git-repo ./build-scripts/dist-recursor ``` Then [built a RPM package on...

> if I'm not mistaken you tested the master branch of Fred's repo ([9c9e6a1](https://github.com/PowerDNS/pdns/commit/9c9e6a1dc3929201e8205a4814407f0352c368e9)), not the branch containing the fix. Oh yes! Sorry about that. I'll test again ...