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Subject: Re: cvs commit: src/sys/netinet ip_fw_pfil.c
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>
>>
>> I'd like to remind you that in this thread you were against removal
>> of the very similar check before doing tag lookup:
>>
>> http://freebsd.rambler.ru/bsdmail/freebsd-current_2004/msg22234.html
>
>
> True, but there are differences.  The post you cite was about vlans 
> and checking every packet that passes through a driver.  That case was 
> significantly more performance critical than yours.

The path to this change is also on every IP packet when
there are any filters present. Filterring rate can be as important as
forwarding rate..