From mboxrd@z Thu Jan  1 00:00:00 1970
From: Giacomo <delleceste@gmail.com>
Subject: iptables -t nat -A OUTPUT -j DNAT ... checksum incorrect
Date: Wed, 5 Aug 2009 14:53:02 +0200
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Hi to all.

With the rule


iptables -t nat -A OUTPUT -p tcp -j DNAT -d 151.8.71.28
--to-destination 140.105.5.88:8080


I see the GET http request with checksum incorrect (on the wireshark
traffic analyzer):

Checksum: x incorrect, should be y (maybe caused by "TCP checksum offload?)

Is it normal?

Why does this happen?

Thanks

Giacomo

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