Is it safe to disable vmbr0?

[patriik]

We run a proxmox installation and our networking setup is VMs go over NAT on vmbr1. We want to disable vmbr0 due to VMs accidentally being created on vmbr0, and us getting MAC spoofing abuse reports from our server hosting provider.

There seems to be no traffic over vmbr0.

root@pve:~ # cat /proc/net/dev
Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
 vmbr0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0

 

[vesalius]

as long as the proxmox host default CIDR and gateway have been moved off of vmbr0 then yes it can be removed without causing issues. if not then proxmox internet access and your webgui access will likely be impacted.