>> I've occasionally wished I had a prefix I could allocate MAC
>> addresses out of for such machines.
> You can use any address with the 'locally administered' bit set -
> that is what it is for [1].  (ie any address where the first byte has
> the 0x02 bit set).

Whee!  I didn't know such a bit existed.  Thank you.

Okay, no more 8:0:20:c0:ff:ee all over the place!  (Now it's going to
be 02:00:01:c0:ff:ee, 02:00:02:c0:ff:ee, 02:00:03:c0:ff:ee, etc :-)

> In practise addresses only have to be unique on your local LAN
> segment, so it doesn't really matter what you use :-)

Well...until I give someone else a machine I've replaced the battery
in, or something of that sort!

der Mouse