netdev - Re: accelerated vlan gives pcap tagged packets untagged

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Message-ID: <20090209143405.76ac6387@mjolnir.drzeus.cx>
Date:	Mon, 9 Feb 2009 14:34:05 +0100
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Francois Romieu <romieu@...zoreil.com>, netdev@...r.kernel.org
Subject: Re: accelerated vlan gives pcap tagged packets untagged

On Mon, 09 Feb 2009 14:23:01 +0100
Patrick McHardy <kaber@...sh.net> wrote:

> 
> Current kernel version (I think starting with 2.6.28) relay the
> VLAN tag information to userspace through packet sockets. The
> current libpcap release from tcpdump.org (or the one Dave keeps
> in a git tree on kernel.org) supports reconstructing the tags.
> 

Ah. This is a Fedora 10 machine so it's running a 2.6.27 kernel. I'll
see if I can do a test with an updated kernel.

Do you know if dhcpd also uses libpcap so that it will stop seeing
packets it shouldn't?

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

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