Olaf Hering wrote:

I'm about to remove /etc/sysconfig/network/if-up.d/xen which is supposed to collect vif* and tap* interfaces connected to a bridge interface. Right now it runs only when xend is running, and today wicked will not call such scripts anyway.

Ah, interesting. I didn't know those would no longer be called.

I wonder how KVM deals with disappearing bridges?

It doesn't.

In the end any replacement script can very well handle KVM, Xen and whatever host type is in use. So a Xen specific tool is not required.

Agreed. I now recall brief discussions with Marius around this topic. In fact, I even created a hack in libvirt (attached) to record the adding/removing of vif/tap devices from the bridge. I never got around to thoroughly testing this hack to gain enough confidence to add it to our libvirt package. Jim