Somehow after upgrading to 12.04, my virtual machines always boot with an attempt to boot from the network first. See this:

while I don't have any PXE configuration set:

I've tried:

• to disable SPICE, by changing the emulator to /usr/bin/kvm from /usr/bin/kvm-spice by editing the XML.
• Ctrl+B to configure the iPXE, but it doesn't let disable this as a boot option.
• setting another type of NIC - not an option, I need virtio for performance reasons. However, e1000e doesn't work either.
• removing the NIC: works. However, I need network.
• Googling around. Hard. Lots of result is about failing configured PXE boots.

Not a big issue, but it increases boot times by 50-100% here (booting from SSD), so it's relatively long and annoys me.

How can I disable this and boot from virtual hard disk directly?