Issues with setting up Docker in Debian 12, no internet on host
reddit / selfhosted

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Zestyclose_Car1088 · 2023-12-05 00:06

Standard Debian 12 bookworm build and standard docker install, but
I've no internet on the host when I start the docker service.

Followed this [https://docs.docker.com/engine/install/debian/](https:/
/docs.docker.com/engine/install/debian/)

Anyone ever seen anything like this? any help is very much
appreciated...

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lolinux · 2023-12-05 05:05

When your internet is running ok, issue an `ip route`. Then start the
docker service and check the routes ok.

Have you defined a network that overlaps the host's network?

Also check the output of `docker network ls` and docker network
inspect for each of the docker networks, see what networks you have
and their gateways.

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arcadianarcadian · 2023-12-05 12:41

Check iptables rules probably docker has no permission/ability to
create/remove iptables rules.

​

You can test the run docker daemon without IPtables.

docker -d --iptables=False &

or

put those into /etc/docker/daemon.json and restart docker daemon.

{
  "iptables" : false
}

​

\* Please mind that you have to create your own iptables rules to
accept/forward/deny connections to your containers.