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To: Shawn Brown <shawnb@ecst.csuchico.edu>
cc: freebsd-questions@freebsd.org
Subject: Re: bpf woes 
In-reply-to: Your message of "Thu, 27 Jul 1995 15:38:34 PDT."
             <199507272238.PAA10750@pitbull.ecst.csuchico.edu> 
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Date: Thu, 27 Jul 1995 23:54:42 +0100
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From: Gary Palmer <gary@palmer.demon.co.uk>
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In message <199507272238.PAA10750@pitbull.ecst.csuchico.edu>, Shawn Brown write
s:
>Recently I've upgraded to 2.0.5-RELEASE from 2.0-RELEASE.  For the life of
>me I can't figure out why I can't get the bpf devices to attach to my 
>network interfaces.  I have an ep (3c509), sl, ppp, lo, and tun.  I have
>allocated 6 bpf devices in the kernel config, yet when I boot on the new
>kernel, the bpf devices don't attach, and when I try and run tcpdump on
>any of the interfaces that are up, it tells me that /dev/bpf? is not
>configured.  

At a guess you didn't recompile your kernel properly, or you used the
wrong config option. The line should read something like:

pseudo-device bpfilter 6

Gary