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Re: [stir] AD Review: draft-ietf-stir-rph-02

Christer Holmberg <christer.holmberg@ericsson.com> Mon, 22 January 2018 19:45 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Adam Roach <adam@nostrum.com>
CC: STIR Chairs <stir-chairs@ietf.org>, "stir@ietf.org" <stir@ietf.org>, "draft-ietf-stir-rph.all@tools.ietf.org" <draft-ietf-stir-rph.all@tools.ietf.org>
Thread-Topic: [stir] AD Review: draft-ietf-stir-rph-02
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Date: Mon, 22 Jan 2018 19:45:21 +0000
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References: <fc330584-a4aa-6a42-322e-50fbe587784b@nostrum.com> <8632F2B7-931B-47D8-B892-3DFF9AD02F0D@ericsson.com> <e32a0879-6aa4-a34e-824d-4dbe5c45d83a@nostrum.com> <7594FB04B1934943A5C02806D1A2204B6C134AE5@ESESSMB109.ericsson.se> <49f4d7c2-934c-94d2-e71f-1574e04762b6@nostrum.com>
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Subject: Re: [stir] AD Review: draft-ietf-stir-rph-02
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>> I wonder if the problem(s) with using multiple Identity header fields are divert-specific, or if they also apply to other passport extensions.
>
> The issue with -divert- is that you have a semantic stack of destinations, rather than a variety of PASSporTs that can assert 
> different things about the call. Nesting is specific to the -divert- use case.

Ok. So, if a node receives an Identity header field (#1), and wants to add RPH, it will add the "rph" claim in a separate PASSPorT, carried in a separate Identity header field (#2)? It will not add the "rph" claim to the existing PASSPorT carried in #1, and it will not perform any nesting.

Regards,

Christer

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