From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: Zero checksum in netconsole/netdump packets
Date: Mon, 06 Nov 2006 23:16:03 -0800 (PST)
Message-ID: <20061106.231603.15264009.davem@davemloft.net>
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From: Chris Lalancette <clalance@redhat.com>
Date: Mon, 06 Nov 2006 18:40:59 -0500

>      Assuming that this is just an oversight, attached is a simple
>      patch to compute the UDP checksum in netpoll_send_udp.

If the resulting checksum is zero, you should set it to
all 1's, like the real UDP code does.