Network configuration - private bridge


Hi all,

I am fairly new to virtualization and I need assistance so solve the following problem:

I want to create two virtual machines that have each two virtual network cards. One to give them direct access to the WAN and the other to connect directly to the other VM. I hope the following picture helps:

I already have two VM working and have also configured the first part of the network.
My system is running:
Linux KVMSERVER 2.6.32-28-server #55-Ubuntu SMP Mon Jan 10 23:57:16 UTC 2011 x86_64 GNU/Linux
and QEMU PC emulator version 0.12.3 (qemu-kvm-0.12.3).

I use virt-manager to lauch and create VM, but I have, following the information found in the documentation, created a bridge by editing the file /etc/network/interfaces in such a way:


auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
# dns-* options are implemented by the resolvconf package, if installed
bridge_ports eth0
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

Can any one give me a hint?