From mboxrd@z Thu Jan  1 00:00:00 1970
From: ebiederm@xmission.com (Eric W. Biederman)
Subject: Re: [tcpdump-workers] vlan tagged packets and libpcap breakage
Date: Sat, 17 Nov 2012 15:37:40 -0800
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Cc: Michael Richardson <mcr@sandelman.ca>,
	tcpdump-workers@lists.tcpdump.org,
	Ani Sinha <ani@aristanetworks.com>, netdev@vger.kernel.org,
	Francesco Ruggeri <fruggeri@aristanetworks.com>
To: Daniel Borkmann <danborkmann@iogearbox.net>
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	(Daniel Borkmann's message of "Sun, 18 Nov 2012 00:16:49 +0100")
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Daniel Borkmann <danborkmann@iogearbox.net> writes:

> Speaking of netsniff-ng where we don't reconstruct VLAN headers, users
> have reported that depending on the NIC/driver resp. ethtool setting,
> they can come in stripped or not (in the pf_packet's rx_ring buffer).
> However, I assume VLAN AUXDATA is always consistent (and so the
> BPF/BPF JIT filtering).

Yes it was a mess before we added software stripping of the vlan headers
a year ago.

Eric