Translations:Sparc/FAQ/48/en

First, the reason they all they all have the same setting is due to a value in OpenBoot PROM (OBP). The story goes that in times past, it was assumed that if a host had multiple interfaces, the interfaces would not reside on the same Ethernet and therefore having the MAC address unique to a machine rather than to a NIC wouldn't be a problem. As time went on and different technologies developed, the opposite was proven.