Ethereal-dev: Re: [Ethereal-dev] Loopback packets have incorrect checksum

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From: Jerry Talkington <jtalkington@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 17 Jun 2004 07:36:54 -0700
On Wed, Jun 16, 2004 at 01:15:00PM -0700, Shaun Jackman wrote:
> This is a followup to my previous e-mail regarding 
> pinfo->can_desegment being false. The packets I'm capturing came from 
> the Linux loopback device, and it seems a large number of the packets 
> have an incorrect TCP checksum.  Or, at least, ethereal believes the 
> TCP checksum is incorrect. I haven't calculated the checksum by hand 
> yet. I can send the packet capture to anyone that's interested. In 
> the mean time, I'm going to hack the desegmenting code to ignore bad 
> checksums.

There's a preference that allows you to ignore the checksums already...

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