The goal is to have one node running Proxmox VE 6.1 hosting 4 VMs (Debian 10/Ubuntu 18) each utilizing one of the 5 physical ethernet ports (2 NICs). Setting all VMs to vmbr0 (NIC1) on enp3s0 works, but when I create a virtual bridge for each ethernet port (NIC2), no VM can be pinged from...