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Date: Mon, 24 Oct 2011 12:56:03 -0400
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From: Ryan Stone <rysto32@gmail.com>
To: freebsd-net@freebsd.org
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Subject: Re: IPFW shows me Strangeness in fresh 8.2-RELEASE system
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On Sun, Oct 23, 2011 at 5:31 PM, David DeSimone <fox@verio.net> wrote:
> Ethernet cards filter their traffic based on MAC address, not based on
> IP address.
>
> Use tcpdump -e to examine the destination MAC of the packets you are
> receiving, in order to determine whether you should receive them.

tcpdump -pe, lest he confuse the issue by having tcpdump put the
interface in promiscuous mode.