Network settings don't work after upgrade (LXC, Hetzner network)

[asmar]

Hi all,

I've got latest 4* version running on a server at Hetzner with a mix of KVM and LXC machines.
KVM machines work great but LXC machines after every upgrade of Proxmox on host they loose network connectivity and the VM is not accessible all, can't even ping from outside.

When I remove the network card from the VM and create it again with same settings it start working again.

I have no clue how to troubleshoot this, any input is much appreciated.

 

[asmar]

Anyone with a suggestion on this?

 

[ojaksch]

I've no tip for you. But having a similiar setup on two Hetzner EX-Servers it looks like a misconfiguration at your setup, as both of my systems are'nt having any issues. Both had a setup with Hetzners debian default system and even the first one survived the upgrade from pve 3.x to 4.x flawlessy.