[CentOS] Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)

> My question is:  are the taps being used behind the
> scenes (is it something libvirt does for us) or are the tap interfaces
> obsolete now?
> 
> Thanks,
> Jorge

Yes, as far as I know in Xen/KVM the tap devices are connected behind
the scenes to the bridge you specify in the config.