I can't seem to figure this out. I have 2 NICs, one for management, the other for actual traffic. vmbr0 is the management interface, vmbr1 is the other.
Here's /etc/network/interfaces:
auto lo
iface lo inet loopback
iface enp4s2 inet manual
iface eno1 inet manual
auto vmbr0
iface vmbr0 inet...