Kirk Ismay wrote: > > Slightly off topic, but has anyone ever seen 2 separate systems with the > same MAC address? I thought this was a "never supposed to happen" kind of > thing as MAC's are supposed to be globally unique. However, I've had this > happen twice now with clients on my ADSL network (I use an OpenBSD/PF box > as a router/dhcp server).
Yep. I actually saw it as a manufacturing defect, something like 13 or 14 years ago. Not only did (at least) two NICs get manufactured with the same MAC addr, but they both ended up at the same customer, same network, same segment of coax. That was a fun problem to track down. 8) Netware network -- Old versions of Netware use MACs like IP networks use, well, IP addresses. Imagine the problems. No funny software or reconfiguration was involved. Haven't seen it since, but not dealing with clients that order NICs by the case anymore either... That was also when NICs were somewhere around $150 each, in quantity. I'm sure today's $8 NICs have a much higher manufacturing quality and would never experience such a problem. (HAHAHAHHAA!!!) Nick. -- http://www.holland-consulting.net
