Re: NAT traversal and its relation to IPv6 [RE: Comments on draft-tsirtsis-dsmip-problem-01.txt]

[Francis Dupont <Francis.Dupont@enst-bretagne.fr>]

 In your previous mail you wrote:

   > So you want to implement and specify one for dual-stack Mobile IPv6 
   > *too*?
   
   No, I want Mobile IPv6 to not require its MN-HA tunnel to be v6-in-v6
   but to require it to be either v6-in-v6 or v6-in-v4.
   
=> you can't do that with Mobile IPv6 itself but it is still possible
to use an alternative, i.e., something which looks like Mobile IPv6
but works for both IP versions. If you wouldn't like to get routing
optimization (something a bit hard in this case :-), I suggest the
"road warrior" IPsec VPN. But, even if RFC 2401 is clearly for any
combination of IP versions, I am afraid that the v6-in-v4 is rarely
supported...

Regards

Francis.Dupont@enst-bretagne.fr