Vulnerability Development mailing list archives

Re: changing MAC address


From: koge () NCSA ES (Antonio Fernandes Vazquez)
Date: Thu, 30 Mar 2000 12:21:12 +0200


On Wed, 29 Mar 2000, Arturo Busleiman wrote:

This is question regarding an old thread.

as an example, under linux, as root:

  ifconfig eth0 hw ether 00:aa:23:ce:3a:11

changes the mac address of eth0 to 00:aa:23:ce:3a:11, iirc.

        [root@machine /root]# ifconfig eth0 hw ether 00:aa:23:ce:3a:11
        SIOCSIFHWADDR: Device or resource busy

why does this happen? under which circumstances can I use ifconfig for
that purpose?

I'm not totally sure that this purpose with ifconfig will works in every
ethernet card, i think that in major this info is written into an ROM.
I try to set down the interface and after change it, but not possible in
my case, you can read more about this in hacking () argo es. ;)

Salut!

        Antonio Fernandes.


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