LACP + VLANs on debian

etc_network_interfaces

root@schick-1:~# cat /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
# allow-hotplug eth0
# iface eth0 inet dhcp

auto bond0
iface bond0 inet static
  bond-mode 4
  bond-miimon 100
  bond_xmit_hash_policy layer2+3
  bond_lacp_rate fast
  slaves eth0 eth1

auto bond0.42
iface bond0.42 inet dhcp
  vlan_raw_device bond0