Updated gpxe packages that fix one bug are now available for Red Hat Enterprise Linux 6.
The gpxe packages provide an open source Preboot Execution Environment (PXE) implementation and bootloader. gPXE also supports additional protocols such as DNS, HTTP, iSCSI and ATA over Ethernet.
Prior to this update, PXE failed to boot a virtual machine which used the virtio network interface card (NIC). An upstream patch, which incorporates the latest upstream gPXE paravirtualized network adapter (virtio-net) driver and removes the legacy Etherboot virtio-net driver, has been applied to fix this problem. Now, PXE can successfully boot virtual machines that use virtio NIC.
All users of gpxe are advised to upgrade to these updated packages, which fix this bug.