New container has no networking

Hi!

Mandatory disclaimer that I'm new to Proxmox but so far everything has been pretty intuitive.

I currently have 1 VM and 1 container on my host (Home Assistant OS is the VM and the container is Ubuntu). All work fine.

I want to create a second container to try out Minio. I created a new Ubuntu container. However, the container has no networking.

I gave it DHCP assignment but then tried to lease it a static IP all without success.

I'm trying to run everything off of one Linux bridge from one of the ethernet ports (the physical hardware has 5 x RJ45s):

1711640157790.png

Any pointers what the issue might be would be much appreciated!