# This setup enables the host IP on VLAN 30, but also enables VM's to get VLANs via VLAN tag.
# The base interface is called 'nic0'

auto lo
iface lo inet loopback

auto nic0
iface nic0 inet manual

# Trunk bridge carrying VLANs 20/30/40
auto vmbr0
iface vmbr0 inet manual
    bridge-ports nic0
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 20 30 40

# Host management IP on VLAN 30
auto vmbr0.30
iface vmbr0.30 inet dhcp