From owner-freebsd-questions  Sat Jun 23 16: 1:50 2001
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From: "Francisco Reyes" <freyes@drf.com>
To: "Joe Clarke" <marcus@marcuscom.com>
Cc: "freebsd-questions@freebsd.org" <freebsd-questions@FreeBSD.ORG>
Date: Sat, 23 Jun 2001 19:03:02 -0400
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Subject: Re: Retaining same MAC (Re: Need help configuring ethernet DSL modem)
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On Sat, 23 Jun 2001 18:47:38 -0400 (EDT), Joe Clarke wrote:

>However, you can use ifconfig to change your MAC address to whatever you
>like.

By default FreeBSD leaves this along right?


>  As you can imagine, this can be quite bad if you choose one that is
>not unique on your broadcast domain.  However, this can be useful if you
>have to replace your ethernet card with a new one, but need to keep your
>same MAC.  To do this, do the following while in a fairly idle network
>state (like SU mode):


>ifconfig <interface> ether <address>
>arp -a -d
>Now, when your ARP cache refreshes, your IP address will be bound to the
>given MAC address.

Thanks for the info. Will keep it handy for reference.



Francisco Reyes
Daily Racing Form
Technical Support Manager
freyes@drf.com
(212) 366-7752




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