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Date:      Wed, 14 Aug 2002 16:20:16 -0300 (ART)
From:      Fernando Gleiser <fgleiser@cactus.fi.uba.ar>
To:        Mark Rowlands <mark.rowlands@minmail.net>
Cc:        <freebsd-questions@FreeBSD.ORG>
Subject:   Re: tool to derive ip from mac address of a remote box?
Message-ID:  <20020814161845.B22629-100000@localhost>
In-Reply-To: <200208142056.45333.mark.rowlands@minmail.net>

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On Wed, 14 Aug 2002, Mark Rowlands wrote:

> I know this is not strictly freebsd related but ......there is a dodgy network
> card somewhere on my network pumping 1.5mb/s of crap..... All I have is a mac
> address, how can I get an ip for it?

If the offending machine has sent some packets to the BSD box, do a
arp -an | grep <mac>

If it hasn't, try a 'tcpdump -len ether host <mac>'


			Fer

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