Docker containers can't access internet (127.0.0.11:53 server misbehaving)

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version 9.8.0
  • Distro version bookworm
  • Kernel version Linux DietPi 6.1.0-27-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.115-1 (2024-11-01) x86_64 GNU/Linux
  • Architecture amd64
  • SBC model NativePC

Additional Information (if applicable)

  • Software title docker compose

Hi,

I have an issue with my docker stacks. I host a nginx reverse-proxy on a docker container. I changed the IP address of the host and the stack complains about not reaching internet.

The DNS server of the host is adguard-home manager. Every computer has internet, but somehow this particular docker stack cannot access internet and every containers (4 actually: nginx, authelia, maxmind-geoip, and crowdsec) throw me “error occurred during dial: dial udp: lookup site.tld on 127.0.0.11:53: server misbehaving”

I guess it’s something on the host or on the docker configuration, but I cannot find what or where to search…
Can you please help me?

Thanks!

2

Is AGH running as container as well?

Can you check which DNS server has been registered for your NPM container?

docker exec <container-name-or-id> cat /etc/resolv.conf