Re: iptables 2.6.38, can kernel erroneously bypass PREROUTING ?

(netdev added to cc)

On Sun, 18 Sep 2011, Martin Devera wrote:

we have problem with high-bw router (1gbit, conntrack, nat, htb qos)
where after some time (weeks) DNAT stops working.
I tried to include "-t raw -A PREROUTING -i eth0" an it got ZERO hits
while -i eth1 has many.
Thus DNAT (in -t nat) doesn't work but interestingly conntrack (and thus
SNAT records) is ok - packets from eth0 sems to be routed.
Only they "somehow" skip all PREROUTING chains.. But from sources
I can find no way how only eth0 pkts could skip PREROUTING but still
be routed and contracked ... Anyone has a clue ?

A didn't more investigation as I had to reboot it - it always helps.

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  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh