Re: [Int-area] Middleboxes to aid the deployment of MPTCP

[Olivier Bonaventure <[e-mail]>]

Joe,
> 
> I've noted this before, but to share with other areas:

You noted this about previous documents. The document that I mentioned 
describes a new design that answers several of the comments that you 
raised on the mptcp mailing list.

> Although I'm not averse to middleboxes as optional optimizations, I find
> the proposed mechanisms aren't quite optional -- they inject option
> information into the SYN data. That information would poison a
> connection to a legacy receiver if (more to the point, when) that info
> isn't removed by a proxy upstream of the receiver.

This paragraph refers to earlier documents discussed in the MPTCP
working group. The new design does not inject option information into
the SYN data. It works like an application layer protocol that sends 
messages
in the SYN by using the TFO option. There is no risk of poisoning.

Olivier

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