how-to Create Virtual Bridge
This is kinda old, but pretty helpful. I find myself referring to these notes often so I thought I would share
1. Create Virtual Bridge
# brctl addbr br0
verify with: brctl show
2. Create network script, edit /etc/sysconfig/network-scripts/ifcfg-br0
DEVICE=br0
TYPE=Bridge
BOOTPROTO=dhcp
ONBOOT=yes
3. Edit eth0 network script add…
BRIDGE=br0
4. Add your physical interface to the bridge
# brctl addif br0 eth0
verify with: brctl show
5. Restart your network services
# service network restart
References:
http://www.linux-kvm.com/content/using-bridged-networking-virt-manager