So final update and hopefully a proper solution (for now): I applied different upstream servers and restarted the container which helped for some hours but afterwards it reverted back to the old...

@Alexandre. Thank you for all the help, got it sorted out. Weirdly enough it had nothing to do with a blocked domain but with the upstream DNS provider. I initially used Quad9 as provider for adguard...

@Alexandre. Thanks for the hint. I found one site looking like it might have to do with TP Link, which would be tplinkextender . net (not linking here as there is definitly something fishy going on,...

Hi, maybe someone is abel to shed some light on a weird problem. My setup is as follows: Archer VR2800v which provides internet access and DHCP but basically nothing else. Deco X55 connected via...