Guest-OS: OpenBSD 3.1 Live System - starts from CD and loads the complete system into RAM, unmounts CD when everything is up.
This CD has no preconfigured network-settings. It takes what it gets. So it will be a witness that can be trusted.
While system loads, 4 nics are detected: le1- le2 - le3 - le4 . Le1 gets IP from DHCP while the other nics were activated manually.