Linked by Howard Fosdick on Mon 21st Nov 2011 07:48 UTC
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Member since:
2011-01-28
phoenix,
"MAC addresses have to be unique only within the same broadcast domain (ie, subnet). MAC addresses do not have to be unique on separate subnets, even if within the same building."
Thank you for the response, I already know how they work though. The hardware MAC is designed to be unique globally, even if it's only necessary to be unique locally. It is not a misunderstanding on my part.
To my knowledge we still haven't needed to recycle them in hardware. If you know of a source that talks about manufacturers reusing MACs, I'd love a link.
http://anonsvn.wireshark.org/wireshark/trunk/manuf
There appear to be plenty of unassigned entries left scattered throughout.
Edited 2011-11-22 21:40 UTC