Comment 2 for bug 963766

Yes, you can set this up with some commands in a terminal and modifying /etc/network/interfaces. Some simple instructions here:

https://help.ubuntu.com/community/KVM/Networking#Bridged_Networking

Note the bits about capabilities, and note also that it's possible to use DHCP to assign both the KVM host's IP address, and the guests' ip addresses through the bridged connection. In this configuration, they'll all end up with IP addresses on the physical network, assigned by whatever dhcp server is available on that network segment.

One important thing to keep in mind is that wireless network cards usually don't support bridging. I'm not sure what the status of bridging on PPPoE or PPPoA interfaces are.

However, I agree it'd be nice to have virt-manager working properly! :)