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RE: about the ULID in the TCP checksum
> -----Original Message-----
> From: Iljitsch van Beijnum [mailto:email@example.com]
> Sent: Monday, January 08, 2007 10:25 AM
> To: Henderson, Thomas R
> Cc: shim6-wg
> Subject: Re: about the ULID in the TCP checksum
> On 8-jan-2007, at 17:00, Henderson, Thomas R wrote:
> > What do you mean, "detect incorrect shimming using the
> checksum"? Do
> > you mean context confusion? I'm not sure it's any worse off.
> For instance, when some bit error occurs (or, more realistically, a
> few) so context a001 becomes context b001. The addresses are
> rewritten as per the wrong context, the checksum doesn't find any
> fault and hopefully there will be a demuxing problem or a session
> ends up with incorrect data.
I see. It seems that, for data insertion to occur, it would still
require a shim6 checksum syndrome to another active context, matching
also the ports and, for TCP, falling within the active window. But you
would lose the additional checksum protection, I agree.