

- What do you mean “on the same bridge”? A bridged network is a connection from a virtual adapter through the host machine for network access. Is review these connections to make sure you haven’t done something like duplicate an adapter and attempt to share address space. Also confirm which piece of networking is broke: DNS, ping, using DHCP, default gateway?
- Pretty sure PBS is advised to NOT be used for targets on the same machine while running in a VM. I’ve seen people with the same issues many times, and it’s because it’s running in a VM and attempting to execute backups on the same instance. It’s supposed to be run a distinctly separate instance itself that can communicate with the clients on all targets.
- https://www.wundertech.net/installing-jellyfin-on-proxmox/
You need logs, but I’m certain your OOMKilling the host. Pay less attention to what the VM is doing, and more to what the host is doing. Passing that amount of data through a VM on a host with only 4GB of RAM sounds like it’s destined to fail. Put a hard limit on the memory the VM can use and see if that helps, but I just don’t think you have the resources to manage this in the way you’re attempting.
A better question is: if you’re only running PBS on this machine, why is it in a VM?