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Subject: Re: tcpdump filter not functioning correctly with igb on FreeBSD 11.1
To: David Athay <davida@truespeed.com>
References: <95AA0EAB-B3D6-4E68-83B2-914894D6FB90@truespeed.com>
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Cc: freebsd-net@freebsd.org
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Wed, 7 Feb 2018 04:10:53 +0700
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07.02.2018 4:03, David Athay пишет:
> I was originally using 11.1-RELEASE but I have since updated to 11-STABLE. Weirdness still persists
> 
> $ tcpdump --version
> tcpdump version 4.9.2
> libpcap version 1.8.1
> OpenSSL 1.0.2n-freebsd  7 Dec 2017
> 
> $ uname -aUK
> FreeBSD s5.pkfm.banes 11.1-STABLE FreeBSD 11.1-STABLE #2 r328930: Tue Feb  6 16:05:59 GMT 2018     root@s5.pkfm.banes <mailto:root@s5.pkfm.banes>:/usr/obj/usr/src/sys/TRUESPEED  amd64 1101509 1101509

Do you have both of port/package version of libpcap and tcpdump installed?
If yes, make sure you use /usr/sbin/tcpdump.

If not, could install net/tcpdump an re-do the test using /usr/local/sbin/tcpdump?