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Re: I-D Action: draft-han-6man-in-band-signaling-for-transport-qos-00.txt

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 17 October 2017 19:40 UTC

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Subject: Re: I-D Action: draft-han-6man-in-band-signaling-for-transport-qos-00.txt
To: Ole Troan <otroan@employees.org>
Cc: Lin Han <Lin.Han@huawei.com>, 6man WG <ipv6@ietf.org>
References: <150774513036.24791.2138264254901122467@ietfa.amsl.com> <cc11634a-b5a2-88b9-f36f-82b3fd9d8d70@gmail.com> <1D30AF33624CDD4A99E8C395069A2A162CD734B2@sjceml521-mbx.china.huawei.com> <a4da4b26-6402-ad0d-a5f5-5bddc192b8f7@gmail.com> <4E40E3EF-B0E5-490E-BFF2-0511D97E9E80@employees.org>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <5201440c-445c-4923-3460-86df7e1179da@gmail.com>
Date: Wed, 18 Oct 2017 08:40:34 +1300
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On 17/10/2017 20:11, Ole Troan wrote:
>>> [LH] The propose does not introduce new hop-by-hop option header, we only introduce new option carried in the existing hop-by-hop option header,
>>
>> Yes, that is exactly what the paragraph from RFC8200 means: it
>> says "New hop-by-hop options are not recommended".
> 
> Blindly reciting rules without also understanding and explaining the intent leads to unintended consequences.
> 
> In this particular case, where every hop along the path would need to support it, then that's the exact use case for the hop by hop header.

Of course. But that in itself isn't the strong justification that
RFC8200 calls for, IMHO.

   Brian
> 
> 
> Ole
>

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