On Monday 22 March 2010 22:56:44 Larry Finger wrote:
> Does anyone have any suggestions on what characteristic could be used to
> generate a unique MAC address for a box in a udev rule?

/dev/urandom

Yeah, there's the chance of clashes. In practice there won't be any clashes,
however. If you think there's a real risk, you should start playing
the lottery tomorrow. You'll immediately win a million dollars so you don't have
to worry about those questions anymore. ;)

In fact, I think the risk for mac clashes is not really reduced by generating 
the mac
address from serial numbers, whatever, etc...

-- 
Greetings, Michael.
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