auto lo
iface lo inet loopback

auto bond0
iface bond0 inet manual
    use bond
    bond-slaves eth1 eth2
    bond-mode 802.3ad
    bond-miimon 100
    bond-lacp-rate fast
    up ip link set $IFACE up

auto bond0.78
iface bond0.78 inet static
    address 10.78.78.104
    netmask 255.255.255.0
    gateway 10.78.78.1
    vlan-raw-device bond0
    up ip link set $IFACE up