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Date: Wed, 31 May 2006 19:46:20 +0200
From: Patrick McHardy <kaber@trash.net>
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To: Frank van Maarseveen <frankvm@frankvm.com>
CC: linux-kernel@vger.kernel.org,
       Kernel Netdev Mailing List <netdev@vger.kernel.org>
Subject: Re: 2.6.17-rc4: netfilter LOG messages truncated via NETCONSOLE
References: <20060531094626.GA23156@janus> <447DAEC9.3050003@trash.net> <20060531160611.GA25637@janus> <447DC613.10102@trash.net> <20060531172936.GB25788@janus>
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Frank van Maarseveen wrote:
> On Wed, May 31, 2006 at 06:36:35PM +0200, Patrick McHardy wrote:
> 
>>The messages might get dropped when the output queue is full.
>>Does one of the drop counters shown by "ip -s link list"
>>and "tc -s -d qdisc show" increase (the other counts might also
>>give some clues)? Otherwise please apply the attached patch
>>(should fix tcpdump, last patch was incomplete) and post a dump.
> 
> 
> No visible improvement with the new patch.

Does this mean tcpdump doesn't show any packets?

> ip -s link doesn't show any
> dropped packets so far with any patch and I don't use traffic control
> that I'm aware of. But I'm not sure what to make of "tc" output, maybe
> because CONFIG_SHAPER is not set:
> 
> 	# tc -s -d qdisc show
> 	RTNETLINK answers: Invalid argument
> 	Dump terminated

Thats because you're missing CONFIG_NET_SCHED. Please enable it and
try the tc command again, without it we can't see whether the qdisc
(which is present even without CONFIG_NET_SCHED) just dropped the
packets.