Re: [Roll] Roman Danyliw's No Objection on draft-ietf-roll-unaware-leaves-25: (with COMMENT)
"Pascal Thubert (pthubert)" <pthubert@cisco.com> Wed, 16 December 2020 08:50 UTC
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Roman Danyliw <rdd@cert.org>, The IESG <iesg@ietf.org>
CC: "draft-ietf-roll-unaware-leaves@ietf.org"
<draft-ietf-roll-unaware-leaves@ietf.org>, "roll-chairs@ietf.org"
<roll-chairs@ietf.org>, "roll@ietf.org" <roll@ietf.org>, JADHAV Rahul
<rahul.ietf@gmail.com>, "aretana.ietf@gmail.com" <aretana.ietf@gmail.com>
Thread-Topic: Roman Danyliw's No Objection on
draft-ietf-roll-unaware-leaves-25: (with COMMENT)
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Date: Wed, 16 Dec 2020 08:50:08 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/SBHyW5tQct7pfG43arju2Fq4_Lc>
Subject: Re: [Roll] Roman Danyliw's No Objection on
draft-ietf-roll-unaware-leaves-25: (with COMMENT)
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Hello Roman: Many thanks for your review! I placed the proposed diffs here: https://github.com/roll-wg/roll-unaware-leaves/commit/6695ef9f0c8596507f69fd09dc0c8b205e9e9115 And will publish -26 soon. Let's see below: > ---------------------------------------------------------------------- > COMMENT: > ---------------------------------------------------------------------- > > Thank you for responding to the SECDIR review and thank you to Carl Wallace > for performing it > > ** Section 6.1. ROVRsz value. > > Indicates the Size of the ROVR. It SHOULD be 1, > 2, 3, or 4, indicating a ROVR size of 64, 128, 192, or 256 bits, > respectively. If a legacy Target Option is used, then the value > must remain 0, as specified in [RFC6550]. > > -- Why are the values of ROVRsz not constrained with a MUST to 0 – 4? What’s > the thinking on allowing undefined ROVR size values? Or not specifying that > these values comes from: > https://www.iana.org/assignments/icmpv6-parameters/icmpv6- > parameters.xhtml#icmpv6-parameters-codes-type-157-code-suffix > https://www.iana.org/assignments/icmpv6-parameters/icmpv6- > parameters.xhtml#icmpv6-parameters-codes-type-158-code-suffix The SHOULD was to allow a value of 0. But thinking twice, it's good to force it to non-zero so we can identify the support of this spec. I changed to: " It MUST be set to 1, 2, 3, or 4, indicating a ROVR size of 64, 128, 192, or 256 bits, respectively. " > -- If the values of ROVR are 1 – 4 why are 4 bits required, not 3 (i.e., 100 = 4)? This denotes the size of a hash (see RFC 8928). We left a chance to expand to much larger hashes. I thought you'd appreciate. The future role of the ROVR in RPL is along the lines of Route Ownership Validation (big surprise), to be designed though. > > ** Section 11. > Additionally, the trust model could include a role validation to > ensure that the node that claims to be a 6LBR or a RPL Root is > entitled to do so. > > How does this role validation (verification of entitlement) work? > Hum, how can I answer this one without a WG designing it? I added " e.g., using a role-based authorization) " But there should be more interesting / scalable / zero-confable methods. I do not want this spec to look like it recommends a method when that really belongs to another Area. I'm happy to add more text but I'd need your help crafting it. Keep safe; Pascal
- [Roll] Roman Danyliw's No Objection on draft-ietf… Roman Danyliw via Datatracker
- Re: [Roll] Roman Danyliw's No Objection on draft-… Pascal Thubert (pthubert)