Subject: Re: The tale of a single MAC
On Mon, 3 Jan 2011, Dobbins, Roland wrote:
I remember that there were several high-profile instances of duplicate MAC addresses being burnt into NICs during the 1990s - once every 2-3 years, IIRC. And those were just the ones that were discussed publicly.
D-Link shipped NAT-boxes around 2003-2004 or so with identical MAC addresses (and a "clone your PC mac address to the WAN interface"- functionality). I checked my then employer ADSL network and 5% of the customer ports had the same MAC address, D-Link support alledgedly said something about the MAC address not being "unique enough" and directed their customers to the cloning functionality to "solve" the
On Mon, jan 03, 2011 at 07:05:24, Mikael Abrahamsson wrote: problem.
-- Mikael Abrahamsson email: swmike@swm.pp.se
Years ago D-link and Linksys and maybe other vendors used the source MAC of 00:00:00:00:00:00 which isn't very nice and could cause interesting issues. At my current job we used to have a routine to find these MACs and tell the users to change to a valid address.