proposed solution needs iptables support, so cloning here:
note: this is a blocker because otherwise networking
with NAT is broken for all guests < 6.0.
Need to apply this upstream patch:
*** Bug 618661 has been marked as a duplicate of this bug. ***
tested via installation of virt host (HTTP installation)
forced to use virtio device
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.
*** Bug 642336 has been marked as a duplicate of this bug. ***