Wireshark-users: Re: [Wireshark-users] checksum incorrect

From: Stephen Fisher <stephentfisher@xxxxxxxxx>
Date: Mon, 6 Nov 2006 13:07:07 -0800

You can turn off the verification of IP, TCP, or UDP checksums in the 
preferences.

On Mon, Nov 06, 2006 at 12:20:41PM +0100, Jaap Keuter wrote:
> Hi,
> 
> The answer is staring you in the face:
> 
> 	...(maybe caused by checksum offloading?)
> 
> Google for "checksum offloading" and you'll see why.
> 
> Thanx,
> Jaap
> 
> On Mon, 6 Nov 2006, Luca Lusso wrote:
> 
> > Hi, I'm using wireshark 0.99.3 to monitor network traffic on my w2k3 domain
> > controller. I've a lot of IP packet with:
> >
> > checksum: 0x???? [incorrect, should be 0x???? (maybe caused by checksum
> > offloading?)]
> >
> > where ???? are exadecimal number.
> >
> > I'get this only when ip.scr is the domain controller (when domain controller
> > is destination I don't get any checksum error)
> >
> > I'm also register a lot of DCERPC traffic to this server.
> >
> > Where is the problem?
> >
> >
> 
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