Enhanced SIIT

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

After a half serious post to the IETF list I decided to write a quick  
draft about the following:

Abstract

  This document describes an extension to the mechanism outlined in RFC
  2765 that allows IPv4 hosts to communicate with IPv6 hosts through a
  protocol translation device with full IPv6 compatibility.

  For this purpose, a new header is inserted between the IP header and
  the payload protocol such as TCP and UDP. The new header contains the
  bits truncated from the IPv6 address when the IPv6 address is
  translated into an IPv4 address in the 240.0.0.0/4 (class E) range.

http://www.muada.com/drafts/draft-van-beijnum-v6ops-esiit-00.txt

(I have no patience with the IETF tools right now, will retry that  
later.)

The idea is that hosts with IPv4 connectivity get to talk to IPv6  
hosts without anything NAT-like getting in the way. However, it does  
require some changes on the IPv4 side, but these can be deployed  
incrementally. The assumption is that these changes would be easier  
to deploy than a full IPv6 transition.

I would really like some feedback on whether this is something useful  
that deserves more attention or not.