Dst cache overflow with FC2 and FC3

Deron Meranda deron.meranda at gmail.com
Wed Jan 12 21:47:54 UTC 2005

On Wed, 12 Jan 2005 21:31:53 +0200, Kimmo Koivisto
<kimmo.koivisto at surfeu.fi> wrote:
> Sometimes (couple times in a month) network freezes and I get the following
> errors in /var/log/messages:
> ...
> Jan 10 21:13:05 testfw kernel: dst cache overflow
> ...
> I guess it's something nat/connection tracking related? I have checked out the
> number of lines in /proc/net/ip_conntrack during the freezes, last time there
> were 241 lines (wc -l /proc/net/ip_conntrack).

What's your ip_conntrack_max set to?

  cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max

You might also be able to learn something from

  grep conntrack /proc/slabinfo

Deron Meranda

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