Re: Opportunistic Tunneling

[Marc Blanchet <Marc.Blanchet@viagenie.qc.ca>]

-- Wednesday, February 11, 2004 20:23:34 +0200 Pekka Savola
<pekkas@netcore.fi> wrote/a ecrit:

> Hi,
> 
> As the Unmanaged Analysis document is currently at WG Last Call, the
> biggest issue appears to be the so-called "opportunistic tunneling",
> i.e., automatic tunneling which would be possible without set-up or
> ISP support.  Examples of these are 6to4 and Teredo. (No other
> specific proposals have been made.) 

TSP.

> We need to figure out how to move
> forward.  The critical questions are at least:
> 
>  1) Do we agree that this is something we need in the first place?
>      * Considering user-driven deployment, maybe not.
>         - example: the user says "I want to use application X" or "I 
>           want to use functionality Y", where X or Y would require 
>           IPv6.
>      * Considering large-scale vendor-centric deployment, probably 
>        yes.
> 
>  2) What are the models for deploying relays, considering the economic 
>     or deployment considerations (in-host, in-site, network)?
>      * And what are the implications of any approach?
>      * Can we decide on the recommended model?
> 
>  3) For NAT traversing, opportunistic tunneling, are there any 
>     features in Teredo which are missing or are unnecessary? I.e.,
>     how good a fit would it be?  Are there alternatives?

TSP does nat traversal and does not have the same security concerns as
teredo.

in the anonymous mode of TSP, TSP is as automatic/opportunistic as
teredo/6to4/isatap. all of them requires the prior (static) knowledge of an
IPv4 address. Most of them may have some ways to get the nearest/best
service, based on some techniques.

Marc.

> 
> We're soliciting input on how to best handle this situation.  Please
> send feedback to the chairs or on the list.  Tentatively, we're
> scheduling 20-30 minutes for discussion in Seoul, but how productive
> such discussion would be would depend on the framing and the contents
> of presentations and/or discussion.
> 
>  Please send your ideas (if any).
> 
>   Thanks,
>   Pekka & Jonne
> 
> 



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Marc Blanchet
Hexago
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