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Message-Id: <200802271517.52092.krauz@cncz.cz>
Date:	Wed, 27 Feb 2008 15:17:51 +0100
From:	Pavel Krauz <krauz@...z.cz>
To:	netdev@...r.kernel.org
Subject: capturing vlan on 2.6.18

Hello 
I am running Centos 5.0 with kernel 2.6.18-8.el5 and I have the following problem with tcpdump and VLAN.
When I replay the traffic that contains VLAN I do not see VLAN headers with tcpdump - they are removed
and I cannot filter for example on VLAN id.
My program which uses PCAP also does not see the VLAN headers, and cannot filter on them!

When I replay locally to the same interface (not from different machine) I see VLAN without problems. When
I replay from different machine I do not see VLAN!

The 2.4.20 kernel works as expected - shows VLAN headers.

Is this a kernel bug or am I supposed to set something?
Thanks & best regards
Pavel Krauz

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