Re: changing MAC address

[paul_pot () NL SONYMUSIC COM (Paul Pot)]

Arthuro,

First you will have to detach eth0 by ifconfig eth0 down and then ifconfig eth0
detach. The system does not allow you to change a mac while the interface is up
and running.

hth
paul

Please respond to Arturo Busleiman <buanzox () USA NET>

To:   VULN-DEV () SECURITYFOCUS COM
cc:

Subject:  changing MAC address

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?

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