Do you have an additional nic in your MD ? if so disable it in bios.
Or do you have one of those strange nics that give you different mac addresses?
This is the strange bit. The motherboard has two builtin NICs. I can turn off both, or turn on both, so all I could do was disable the two onboad ones. I added a PCI NIC. So I should think I have in effect one NIC.
1. That one NIC is presented as eth1, not eth0!
2. Once initrd is loaded, one of the onboard NICs is presented as eth0, and the boot process comes to a grinding halt.
Boris, I'll try to delete the MD, and start over tonight. We'll see what happens.