cannot create KVM virtual guests with shared networking?

[David G. Mackay]

On Wed, 2008-02-20 at 13:18 -0500, James Ralston wrote:
> Is it even possible to create KVM virtual guests with shared
> networking in Fedora 8?
> 
> Apparently, one has to bridge a physical network interface on the host
> in order to be able to do this, but virt-manager can't do it, and the
> instructions on the KVM HOWTO don't work, either:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=433654
> 
> Has anyone figured out what needs to be done to get this to work?
> 
> (Using Xen to host a fully virtualized guest isn't really an option,
> as the KVM host is my desktop PC, and as such it performs both CPU
> frequency scaling and auto-suspending, neither of which Xen supports.)

Take a look at vde (Virtual Device Ethernet).  I've been able to set up
several KVM VMs that can communicate with each other, and with a little
iptables forwarding magic, can be accessed from the outside world.
Unfortunately, it hasn't been packaged for Fedora, yet, so you'll have
to download and compile, but it's not too bad.

Dave