MAC address

[Roy Smith]

In article <414f7c66$0$60638$a1866201 at newsreader.visi.com>,
 Grant Edwards <grante at visi.com> wrote:

> On 2004-09-20, Ajay <abra9823 at mail.usyd.edu.au> wrote:
> > Quoting Grant Edwards <grante at visi.com>:
> >
> >> On 2004-09-20, Ajay <abra9823 at mail.usyd.edu.au> wrote:
> >>
> >> > its actually windows that i would like to find out about. what
> >> > i am trying to do is to anonymize client address by picking a
> >> > random MAC address and using that instead
> >>
> >> That's a pretty bad idea.  If you insist on doing it, read the
> >> Ethernet spec so you make sure you're picking a valid address.
> >
> > and why is it a bad idea?
> 
> How are you going to avoid collisions?  I suppose it's a
> sufficiently slim probability you can just ignore it.

DECNET used to change the client MAC address.  But then again, DECNET 
was a pretty bad idea :-)