Bonding with LACP and VLANS

My Version Proxmox VE 3.4-1/3f2d890e

I changed my running /etc/config/interfaces accordingly to enable bonding with LACP, but had problems.
So tried this interfaces file:

auto lo
iface lo inet loopback

iface eth1 inet manual
bond-master bond0

iface eth2 inet manual
bond-master bond0

auto bond0
iface bond0 inet manual
address xxx.yy.z.248
netmask 255.255.255.192
network xxx.yy.z.192
gateway xxx.yy.z.254
slaves eth1 eth2
bond_miimon 100
bond_mode 802.3ad
bond_mode 4
bond_downdelay 200
bond_updelay 200

Unfortunately address, netmask and gateway are not set for bond0.
After setting all manually with ifconfig and route everythings works fine with the untagged vlan 404 LACP.
I have first to find out what is the reason for not setting address, netmask and gateway when /etc/init.d/networking executes.
Afterwards I will proceed with the tagged vlan bridges.

Any ideas welcome

Dieter