Lanny Marcus wrote: > On 13 August 2007, Johnny Hughes <johnny at centos.org> wrote: > <snip> >> How can 2 nics from different companies have the same mac address .... >> I don't think that is possible. >> each card needs a separate MAC address, at least the way I understand >> networking. > > I agree with Doug and Johnny. My belief is that every NIC in the world > is supposed to have a unique MAC address. Everyone believed that except DECnet which expected all cards in the same machine to have the same MAC. The address should be stored in a ROM and initialized at startup, so it is probably a firmware or driver bug. > Although the OP has been using > these boards without problems, I suspect there is a defect on the > boards. Yes, different block ranges are supposed to be assigned to different companies. But, it shouldn't hurt anything unless both are connected to the same subnet which you aren't likely to want. -- Les Mikesell lesmikesell at gmail.com