Hi
I tried to upgrade from 6.4 to 7. I made a huge mistake.
My space local-lvm was exhausted during installation :-(.
I tried https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#In-place_upgrade
Than my local-lvm runs out of space. I rebooted... Now I'm not able to run vmbr0.
So, no network...