auto lo
iface lo inet loopback
iface lo inet6 loopback

auto vmbr0
iface vmbr0 inet static
  address A.A.A.35
  netmask 255.255.255.255
  pointopoint GW.GW.GW.33
  gateway GW.GW.GW.33
  broadcast BR.BR.BR.63
  bridge_ports enp4s0
  bridge_stp off
  bridge_fd 1
  bridge_hello 2
  bridge_maxage 12

iface vmbr0 inet6 static
  address XXXX:XXX:XXX:XXXX::2
  netmask 64
  gateway fe80::1