I've successfully booted my XP desktop numerous times from several locations using the script below. I built a PC with 64bit W7 and have only been able to boot it from my network. I really can't find the MAC address I have in this script and don't recall what address needs to be there (ff...) i.e. the desktop PC, the router or what? Thank you!
ip neigh change 192.168.1.254 lladdr ff:ff:ff:ff:ff:ff nud permanent dev br0
ip neigh add 192.168.1.254 lladdr ff:ff:ff:ff:ff:ff nud permanent dev br0