Re: devfs patch v3

David Woodhouse (Dave@imladris.demon.co.uk)
Mon, 12 Jan 1998 12:09:02 +0000

shirsch@ibm.net said:
>
> If you have an Ethernet card, (and the manufacturer of the Ethernet
> card
> was competent about assigning Ethernet addresses --- some weren't,
> unfortuantely), the guarantees on the uniqueness of UUID's is much
> more
> than statistical, actually.

> On boxes that do not have unique machine ID's (e.g. Digital Unix on
> Alpha), the FlexLM license manager uses the ethernet address in lieu
> of the serial number. Have you actually ever encountered a duplicate
> enet id?

We've got five of 00:80:C8:00:00:00 on our College subnet alone.
I think they came with unique addresses, but they forget them as soon as you
run the setup program that came with the card, and revert to 00:00:00 :)

They're D-Link DE220 cards, I think.

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