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Date:	Wed, 31 Oct 2012 18:22:54 -0700
From:	Ani Sinha <>
To:	Guy Harris <>
	Francesco Ruggeri <>,
Subject: Re: [tcpdump-workers] vlan tagged packets and libpcap breakage

On Wed, Oct 31, 2012 at 5:50 PM, Guy Harris <> wrote:
> On Oct 31, 2012, at 3:35 PM, Ani Sinha <> wrote:
>> yes but if the packet is passed to the filter within libpcap (when we
>> are not using the kernel filter) before the reinsertion,
> ...that would be a bug.
> Currently, that bug doesn't exist in the recvfrom() code path, but *does* appear to exist in the tpacket code path - and that code path also runs the filter before the SLL header is constructed.  That should be fixed.

yes, agreed.
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