Question on changing MAC addresses

[jlhagen@collins.rockwell.com]

"ifconfig"
I found an on-line man page for ifconfig( at
http://matrix.linux-help.org/cgi-bin/man.cgi ) and under
"  hw class address
              Set  the hardware address of this interface, if the
              device driver supports this operation.  The keyword
              must  be followed by the name of the hardware class
              and the printable ASCII equivalent of the  hardware
              address.    Hardware  classes  currently  supported
              include ether (Ethernet), ax25 (AMPR AX.25), ARCnet
              and netrom (AMPR NET/ROM). "

Is it safe to conclude that Donald's driver for the above cards ( tulip.c ??)
provides this capability?? I can guess the answer is yes but just want
to be sure.

Thanks again,
John





Sami YOUSIF <syousif@INAME.COM> on 04/27/2000 01:01:43 PM

Please respond to syousif@INAME.COM

To:   jlhagen@collins.rockwell.com
cc:

Subject:  Re: Question on changing MAC addresses


jlhagen@collins.rockwell.com wrote:

> Hello,
>
> we currently have an avionics system that talks over 10Mbit ethernet
lines.
> For testing
> this system we are trying to use commercial hardware such as ethernet
taps
> with
> pc multi port nic cards. In order to stimulate the avionics boxes we need
> to be able to
> modify the MAC address of the commercial nic card. The avionics boxes are
> doing source validation on all data received, meaning they will only
except
> ethernet
> packets from the appropriate MAC addressed sender. I was wondering about
> the
> ability under Linux to easily change the MAC address of Zynx 346Q (
> DEC21143)
> and Adaptec ANA-6944A/TX(also DEC based) . Your thoughts, ideas,
warnings,
> will be welcomed.  Is this something we could do with "ifconfig" ????
>
> Thanks ,
> John
>
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depends on the driver:

ifconfig eth0 down
ifconfig eth0 hw ether aa:bb:cc:dd:ee:ff

(replace aa:bb:cc:dd:ee:ff   with the new hw address to be used, after that
you
can do normal operations on the card..)


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Sami Yousif
mailto:syousif@iname.com
http://www.mav.net/teddyr/syousif/ Personal Page

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