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From: ts@cup.portal.com (Tim W Smith)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Changing Ethernet Address On Mac
Message-ID: <33678@cup.portal.com>
Date: 9 Sep 90 01:40:10 GMT
References: <1990Aug29.221353@mathcs.emory.edu>
  <1990Sep8.003309.12555@dhw68k.cts.com>
Organization: The Portal System (TM)
Lines: 20

<Seriously, though - not really.  Each manufacturer is issued a range of
<Ethernet addresses for their products, and this address is supposed to
<be irrevocably built into the given product.  Thus, it's difficult if
<not impossible to change.
<
<Why would you want to?

One reason you would want to change the address is if you are running
some sort of protocol that encodes information in the address itself.
DECnet seems to do this.  If your machine is DECNet node N, then the
ethernet address that should be used for that node is some function
of N.

The DECNet software I've seen for the Mac lets you chose the DECNet
node number, and then wants to set the ethernet address.

As I mentioned in an earlier posting, you can set the address
simply be changing the 'eadr' resource in the System file.

					Tim Smith