Question about dhcp-client-identifier

Glenn Satchell Glenn.Satchell at
Wed Aug 22 13:56:30 UTC 2007

>Date: Wed, 22 Aug 2007 14:38:52 +0100
>To: dhcp-users at
>From: Simon Hobson <dhcp1 at>
>Subject: Re: Question about dhcp-client-identifier
>Darren wrote:
>>  > In both cases the devices will not work properly, wouldn't it be
>>>  better for them to be very broken so that the problem is less subtle
>>>  and less hard to diagnose ?

Why are you even worrying about this situation and DHCP? If two devices
on the same subnet have the same mac address then things break at layer
2. Think about the ARP table, fo rexample. It doesn't even matter
whether they have the same or different IP addresses. It also doesn't
matter whether they got this address by DHCP or manually setting it -
the network will still be broken.

I can only assume that you are working in a "hostile" environment like
a University computer lab or similar and expect users to change their
mac address manually.

Either way, this is not something that can really be "fixed" with a dhcp


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