MAC vs DUID issue

[Ted Lemon]

On Apr 2, 2014, at 5:06 PM, Simon Hobson <dhcp1 at thehobsons.co.uk> wrote:
> It isn't - it was given as an example of why, for some use cases, the MAC is a far superior identifier than some arbitrary identifier made-up by the client (and so not guaranteed to be invariable and unique).

Well, yes, except that there have been cases where many devices of the same type have shipped with the same MAC address.   So the mere fact that something has gone wrong in the past due to incorrect implementation of protocol requirements is not an argument for changing the protocol.