Re: [multipathtcp] draft-boucadair-mptcp-plain-mode-07

[Olivier Bonaventure <[e-mail]>]

Yoshifumi,

>
>
>     Since the mapping is between a TCP connection (UDP flow) and an
>     MPTCP connection, it applies for all the subflows of the MPTCP
>     connection automatically. I'm not in favor of changing the mapping
>     during the lifetime of an MPTCP connection, it leads to
>     implementation complexity that are not worth the effort given that
>     we can establish another MPTCP connection bound to another flow.
>
>
> I see. Sorry. I might be confused by the name of Concentrator..
>
> Then, my another question is if we can do the same thing with
> application level.
> I am wondering if we can write an application gateway for CPE and
> Concentrator to send mapping information just like PM option, (and do
> some segmentation tasks as well) so that we can mitigate middlebox
> interventions.

The closest solution in the application level is SOCKS. This is what KT 
is doing in Korea and what OVH is deploying for their OverTheBox 
solution. Both do this on top of MPTCP.


Olivier

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