RE: [NSIS] GIST over GIST-unaware NATs

Actually, I think this should be added as a WG document.  

Comments?
John 

>-----Original Message-----
>From: ext Xiaoming Fu [mailto:fu@cs.uni-goettingen.de] 
>Sent: 11 October, 2006 22:49
>To: nsis@ietf.org
>Subject: [NSIS] GIST over GIST-unaware NATs
>
>Hi all,
>
>There were some IESG discussions on GIST over GIST-unaware 
>NATs.  I read through draft-pashalidis-nsis-gist-legacynats-00 
>and found it makes a number of clarifications on this issue:
>
>- The presence of a GIST-unaware NAT can be detected by 
>comparing headers of the GIST query-response procedure message 
>in the two adjacent non-NAT GIST nodes.
>
>- Upon the detection of such a NAT (and affiliated rules), 
>these two GIST nodes can then establish a UDP tunnel between 
>them, and encapsulate the GIST messages (query-response-...) 
>into the tunnel, and the outgoing tunnel endpoints decapsulate 
>the messages into the desired format.
>
>- The draft also gives detailed description on GIST signaling 
>and data traffic processing in both the case where a NAT is 
>located close to the NI and the case where a NAT is close to 
>the NR. The rationale looks fine to me. If there is an 
>implementation demoing this, it would be even nicer.
>
>What do others think?
>Xiaoming
>
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