networking - KVM bridge network initial setup - 2 public IPs

I have actually two problems with my server. The setup is like this:

• server in a data center connected directly to the internet


• one network card / two public IPs (one IP the server gets over DHCP, the other has to be configured manually)


• Debian wheezy as kvm host


• Debian wheezy as guest

First problem is that I don't get network connection on the guest at all.
Second problem is that I want the guest to responde to one of the IP addresses. The second IP I want to use to manage the host.

Let's start with the first problem.
Here is the interfaces file of the host:

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet manual

auto eth0:0
iface eth0:0 inet static 
address XX.YYY.ZZZ.161
network XX.YYY.ZZZ.161
netmask 255.255.255.255
broadcast XX.YYY.ZZZ.255
gateway AA.BBB.CCC.1


auto br0
iface br0 inet dhcp
bridge_ports eth0
bridge_stp off
bridge_maxwait  0
bridge_fd       0

With this configuration br0 gets the IP address from DHCP and I can reach the host server on both IP addresses. The host can also ping Google. Very well.

Now I start the guest.

root@debianvmhost:~# brctl show

bridge name     bridge id               STP enabled     interfaces
br0             8000.002590a31dee       no              eth0
                                                        vnet0

Seems like the vm is connected to the bridge.

root@debianvmhost:~# ps -ef | grep qemu

/usr/bin/kvm ... 
-netdev tap,fd=20,id=hostnet0,vhost=on,vhostfd=21 
-device virtio-net-pci,netdev=hostnet0,id=net0,
mac=52:54:xx:xx:xx:xx,bus=pci.0,addr=0x3 

So far, so good.
But the vm does not get any IP address. When I manually set one of the public IP addresses I still do not get network access. I cannot poing th IP address of Google, the network is not reachable.

What do I do wrong?

Thanks in advance

Jaroslaw

Edit:

Sorry, commenting does not work on my mobile.
The hoster is Strato.