Check which network adapter is configured for the VM.
Here are the adapters supported by QEMU 0.11.0 [from a QEMU on Fedora 12 (i686) installation]:
| QEMU NIC 'model' | PCI Vendor ID | PCI Device ID | Mfr Name | Device Name | Notes |
|---|---|---|---|---|---|
| rtl8139 | 10ECh | 8139h | Realtek | RTL8139C+ Fast Ethernet Adapter | Default in QEMU v0.11.0 |
| ne2k_pci | 10ECh | 8029h | Realtek | RTL-8029(AS) | Default in prior versions? |
| i82551 | 8086h | 1209h | Intel | 82551ER/IT Fast Ethernet | |
| i82557b | 8086h | 1229h | Intel | 82557 10/100Mbps Ethernet | |
| i82559er | 8086h | 1209h | Intel | 82559ER Fast Ethernet | |
| pcnet | 1022h | 2000h | AMD | AM79C970 Ethernet Adapter | |
| e1000 | 8086h | 100Eh | Intel | 82540EM Gigabit Ethernet Ctrlr | |
| virtio | 1AF4h | 1000h | virtio | Virtio Network Interface |
Build the appropriate ROM image:
cd gpxe/src make bin/10ec8029.rom # for ns8390 10ec:8029
The -option-rom command-line option tells QEMU to use the gPXE ROM:
qemu -option-rom /path/to/10ec8029.rom /dev/null
This example runs a default VM with no disks and allows you to press Ctrl+B to enter gPXE.