Comment 6 for bug 1280362

In my Trusty with all updates for today it works with this configuration:
auto eth0
iface eth0 inet manual
  bond-master bond0
  bond-primary eth2

auto eth2
  iface eth2 inet manual
  bond-master bond0

auto bond0
iface bond0 inet static
  address 212.XXX.YYY.206
  netmask 255.255.255.0
  network 212.XXX.YYY.0
  gateway 212.XXX.YYY.1
  dns-nameservers 212.XXX.YYY.2

  bond-mode 4
  bond-miimon 100
  bond-slaves none
  bond-xmit_hash_policy 1

iface bond0 inet6 static
  address 2010:ZZZZ:WWWW:2::ce
  netmask 64
  gateway 2010:ZZZZ:WWWW:2::1