Re: about the ULID in the TCP checksum

[Iljitsch van Beijnum <iljitsch@muada.com>]

On 4-jan-2007, at 23:39, Henderson, Thomas R wrote:

> > If this is a problem, it's probably better to adjust the checksum
> > such that it appears to be correct to a non-shim6 aware observer.
> > This does have the downside that incorrect address rewriting isn't
> > detected by the checksum, though.

> Why not both twiddle the checksum at the shim so that it is aligned  
> with
> locators, and de-twiddle when deshimming?

I think I like this approach better than what's currently in the draft.

However, it does have a downside: since the checksum is adjusted when  
doing the shim processing, it's not possible to detect incorrect  
shimming using the checksum.