Re: IPv6 Home Use to stimulate deployment over IPv4-NAT

[Kurt Erik Lindqvist <kurtis@kurtis.pp.se>]

> Assume there is not enough Ipv4 address space for providers to give 
> out to all subscribers or cannot at reasonable cost.  But they can 
> give the subscriber an IPv6 prefix.  This means 6to4 or ISATAP won't 
> work in this scenario in the users home.
Are you saying this as an alternative to IPv4 NAT or as a complement? 
(I assume the latter)

> The home user network encaps the IPv6 packet at NAT with Protocol ID 
> equivalent to "6".  The provider then takes that packet and decaps at 
> their edge and uses native IPv6 or 6to4 to encap that packet to where 
> the IPv6 service is located.  I realize this has many assumptions and 
> I would work on those with some other folks interested in this 
> problem. 
If you mean the first of what I wrote above, I could finally see 
something that could  make consumer oriented operators look at IPv6. 
There are a number of questions still though, as cost and stability of 
equipment as well as application impact. But the two last doesn't 
appear to have bothered this type of operators before....

>  
> I am re-reading Teredo now and working to see if it is addendum to 
> Teredo or completely different solution.  I think it is a different 
> solution and possibly much simpler.  I also believe this solution we 
> are looking at can do e2e IPsec over the IPv4-NAT.
That would be a useful application in a way. But I am worried about the 
poor performance of IPsec in combination with IPv6 code.

- kurtis -