Re: DDoS attack causing bad effect on conntrack searches

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From: David Miller <davem@xxxxxxxxxxxxx>
Date: Fri, 23 Apr 2010 01:13:28 -0700 (PDT)

> I really can't see what might cause this behavior then.

This all reminds me of the namespace bug we dealt with
a month or two ago.

Jesper, you don't happen to be using network namespaces are you?
Because if so, the following might be your cure.

commit 5b3501faa8741d50617ce4191c20061c6ef36cb3
Author: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date:   Mon Feb 8 11:16:56 2010 -0800

    netfilter: nf_conntrack: per netns nf_conntrack_cachep
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