Docker on proxmox host is blocking ct network access

General
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1

Hello,

While I’m still learning about Docker, I haven’t seen a working fix for this.

Setup:
Host running Proxmox-VE with several CT`s and VM´s

Scenario:
I set up several CT´s and VM´s on proxmox, got everything working and got the CT/VMs access to the internet.
As soon as I installed Docker on the host the Internetaccess is getting blocked.
Ping 1.1.1.1 or google.com results in a 100% package loss.
I still can ping the host and every other VM/CT.
I just cant get my CT`s and VM´s to get access to the internet anymore.

does anyone have an idea what could be the cause?

Thanks in advance!

2

I have not a single Promox vm where docker containers attached to docker bridge, overlay, macvlan or ipvlan L2 networks can’t reach the internet.

The only network type where it doesn’t work with a vm on Proxmox is ipvlan l3.

You didn’t share enough details that allow us to understand what you did exactly and how you did it (as in exact commands, content of compose file). Please do not leave out any details (please only anonymize public ips, domain names and passwords) : it allows us to see what you did and can tell whether it shouldn’t be done like that, or if something is missing and should be done.