Re: [multipathtcp] [tcpm] Working group acceptance of draft-bonaventure-mptcp-converters ?

[Olivier Bonaventure <[e-mail]>]

Yuchung,
>>
>> My position is as follows:
>>      - I don't think this doc should be adopted by the WG
> I too do not support the adoption for similar reasons above, even
> though I'd love to see more usage of TFO and MPTCP.
> 
> TFO today is still facing bad middle-boxes issues and
> demands extreme conservative heuristics to deploy (see last
> presentation by Praveen in tcpm). Ultimately they need to be
> applied by either the client or the proposed converters.

Recent measurements show indeed that TFO does not work everywhere. 
However, there is a very large fraction of all the deployed IP networks 
where TFO works perfectly. The documented problems with TFO affect 
clients willing to use TFO to reach any server over the Internet. This 
is not the deployment scenario for the converters. Converters will 
either be deployed in networks that have been configured to support TFO 
or where clients always pass through the same (pool of) converters. In 
this case, a client can easily verify whether the path towards its 
converter is safe for TFO. If not, the conversion service would be 
disabled on this client.


Olivier

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