KVM network bridge with two NICs

Solution 1:

I have a similar scenario with ubuntu 12.04.02 as server OS.
My currently single guest is running CentOS.
The server has 4 NICs and I want to run eth0 solely for the server, use eth1 for iSCSI to the storage and eth2 and eth3 for the guests.
Eth0, eth2 and eth3 connect to the same lan.

I am not sure if I correctly figured out how to setup the interfaces though.
The descriptions I have found so far only deal with 1 NIC in the server.

Currently I have configured eth0 with dhcp IP as I use a fixed reservation on the dhcp server.
My bridge for eth2 is named br2

I have configured eth2 and br2 as follows

auto  eth2  
iface eth2 inet manual  

auto  br2  
iface br2 inet manual  
  bridge_ports   eth2  
  netmask   255.255.255.0  
  network   192.168.168.0  
  gateway   192.168.168.1  
  broadcast 192.168.168.255  
  bridge_stp     off  
  bridge_fd      0  
  bridge_maxwait 0

and

 brctl addif br2 eth2

Interfaces eth2 and br2 are brought up without an IP as expected.
The guests then also request their address using dhcp.

KVM network bridge with two NICs

Solution 1:

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