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Re: DAD question

Mikael Abrahamsson <swmike@swm.pp.se> Sat, 11 August 2012 16:57 UTC

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Date: Sat, 11 Aug 2012 18:57:53 +0200
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: sthaug@nethelp.no
Subject: Re: DAD question
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On Sat, 11 Aug 2012, sthaug@nethelp.no wrote:

> So from this sample a total of 10 MAC addresses occur more than once 
> (different customers, different locations).

I concur. Back 5-8 years ago, we had a few percent of our household 
customers use the same MAC address, namely the one D-link assigned by 
default to their NAT boxes and then added an option to "clone" an inside 
PC address if one wanted to change the WAN facing address.

MAC addresses being non-unique is happening a lot more commonly than it 
should, and needs to be taken in account.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se

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