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Date: Sun, 06 Apr 2014 17:57:14 +0700
From: Eugene Grosbein <eugen@grosbein.net>
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To: Brett Glass <brett@lariat.net>
Subject: Re: IPFW and VLANs
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On 06.04.2014 09:26, Brett Glass wrote:

> I added a few more rules, with "recv" and "xmit" options, and 
> checked the counts again after zeroing them and letting the router 
> run for a bit:
> 
> 00001 20591  8769298 count ip from any to any layer2 via re0_1
> 00002 18715  8725085 count ip from any to any layer2 via re0
> 00003     0        0 count ip from any to any not layer2 via re0
> 00004 18715  8725085 count ip from any to any layer2 recv re0
> 00005 18715  8725085 count ip from any to any layer2 xmit re0
> 00006 12746  1324342 count ip from any to any layer2 recv re0_1
> 00007 20592  8770798 count ip from any to any layer2 xmit re0_1
> 
> Maybe I am missing something (as I often do), but this seems just plain wrong.
> 
> What gives? Help in interpreting these results would be much appreciated.

You should use "in recv" and "out xmit" instead of just recv/xmit
as routed packet will match BOTH of "recv $in_if" and "xmit $out_if".