Subject: Re: Setting the default port on ethernet cards
To: Jason Thorpe <>
From: Marc Horowitz <>
List: tech-net
Date: 04/29/1997 16:49:10
Jason Thorpe <> writes:

>> [ I think Marc meant to CC this to tech-net, but I'm not sure... anyhow,
>>   I want my reply on tech-net, so... :-]

oops :-)

>> ...isn't the "network id" basically the MAC address?  Do these things
>> also have an "Ethernet address"?  Anyhow, I'd say that this is crying
>> out for some generic way in infconfig(8) to set the MAC address of
>> a given interface (as I recall, this was possible under SunOS).

No.  As perry said, it describes the set of radios with which you
communicate.  If you think of it as a seed for the spread-spectrum
sequencing, you'll be ok, although that's not how it's done.  Each
card also has an ethernet-like mac address (6 octets, broadcast and
multicast are done the same way, etc).  You could call the mac address
of a wavelan a composite of the real mac and the nwid (which is 16
bits), but that's not really what you want.  It's particularly unclean
because you often want to change the nwid, but leave the mac the same.