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

Joe Touch <touch@strayalpha.com> Sun, 03 December 2017 20:30 UTC

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To: "Scharf, Michael (Nokia - DE/Stuttgart)" <michael.scharf@nokia.com>, "tcpm@ietf.org" <tcpm@ietf.org>, multipathtcp <multipathtcp@ietf.org>
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From: Joe Touch <touch@strayalpha.com>
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Date: Sun, 03 Dec 2017 12:30:06 -0800
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Subject: Re: [multipathtcp] Working group acceptance of draft-bonaventure-mptcp-converters ?
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On 12/3/2017 12:09 PM, Scharf, Michael (Nokia - DE/Stuttgart) wrote:
> The TCPM charter states that the "WG mostly focuses on maintenance issues
> (e.g., bug fixes) and modest changes to the protocol, algorithms, and
> interfaces that maintain TCP's utility". Assisting the deployment of new TCP
> extensions could be understood as one way to ensure TCP's utility.

  "The client places the destination address and port number of the
   target Server in the payload of the SYN sent to the Converter by
   leveraging TCP Fast Open [RFC7413]."

I disagree with any use of TCP SYN payloads as anything other than
application data. At best, the mechanism attempts to re-create an
extension of TCPMUX, which was deprecated for good reason.

Additionally, this is claimed to be an application proxy, which would be
out of scope both for TCPM and to modify the definition of the contents
or directly manipulate the headers of any TCP segments.

My position is as follows:
    - I don't think this doc should be adopted by the WG
    - Whether the doc is adopted or not, I have no interest in
continuing to try to repair its significant (and IMO fatal) flaws

Joe

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