RE: An alternative to 6to4 and teredo

["Jeroen Massar" <jeroen@unfix.org>]

Erik Nordmark wrote:

> > That's not all.  6to4/Teredo offer an automatic configuration using 
> > anycast addresses.  Much easier than trying to figure out 
> the closest 
> > tunnel broker, configuring to use that etc.
> 
> If somebody wants to provide a good tunnel broker service they can
> automate this without any changes in the clients. Just have 
> multiple tunnel
> servers at different places in the topology and have the tunnel broker
> meaure or estimate the location of the client before handing it
> off to a tunnel server.
> 
> Thus if example.net wants to capture IPv6 "customers" that they don't
> have as IPv4 customers they could do this relatively easily.

Which is exactly what we (SixXS) do, we actually let the user pick a
'preferred' POP, then measure their latency from the POPs to the
selected
IP and then we select onto which POP they go.

This, the signup process, will be done completely automatically
soon(tm).

Mind you that TSP servers can already do it, wether they really
do so I don't know though. Multiple TB's are implemented in their
system though.

> > I agree, but there is a cost to a tunnel broker model, that 
> is, not so 
> > simple configuration..
> 
> Yes, but see above. A single icon on the desktop might be sufficient.
> And it has the advantage of lower operational complexity resulting in
> a higher probability that it actually works. And should it 
> not work the icon allows you turn turn it off.

If all is well the client should get a notification of the server
controlling
this system that:
 - it could not connect to the server.
 - it is not allowed to serv.
 - packets can't apparently reach the endpoint.
   (If you can't ping6 the remote endpoint the 6in4 path is broken)

etc.. so this could also all be done automatically.

Greets,
 Jeroen