auto lo
iface lo inet loopback

auto eth0.101
iface eth0.101 inet manual
    pre-up swconfig dev eth0 set reset 1
    pre-up swconfig dev eth0 set enable_vlan 1
    pre-up swconfig dev eth0 vlan 101 set ports '0 1 2 3 4 8t'
    pre-up swconfig dev eth0 set apply 1

auto wlan0
iface wlan0 inet manual

auto br0
iface br0 inet dhcp
bridge_ports eth0.101 wlan0