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

[Erik Nordmark <Erik.Nordmark@sun.com>]

> If we have tunnel brokers we don 't need teredo right?  That's my take
> now.  

Agreed in principle.

Two things though:
Firstly, for the access router to ISP tunnel config
something simpler (like a DHCPv4 option) might make sense - depends
on what type of authentication the ISP wants to do specifically
for the IPv6 tunnel. If it is sufficient for the ISP to check that
the IPv4 source is one of its customers then the TSP authentication
features and flexibility isn't needed.

Secondly, 
I've been told that tunnel broker can work trough NAT but the RFC
(RFC 3053) says:
3. Known limitations

   This mechanism may not work if the user is using private IPv4
   addresses behind a NAT box.

Thus I think it would be useful to have a specification on how tunnel
broker works across a NAT.

  Erik