Re: [Roll] Fwd: New Version Notification for draft-ietf-roll-nsa-extension-06.txt

<> Wed, 26 February 2020 11:15 UTC

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To: Routing Over Low power and Lossy networks <>, "Georgios Z. Papadopoulos" <>, Remous-Aris Koutsiamanis <>
Thread-Topic: [Roll] Fwd: New Version Notification for draft-ietf-roll-nsa-extension-06.txt
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Date: Wed, 26 Feb 2020 11:15:16 +0000
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Subject: Re: [Roll] Fwd: New Version Notification for draft-ietf-roll-nsa-extension-06.txt
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Hello all,

Another comment about this draft. The Security Considerations section currently says
" The structure of the DIO control message is extended, within the pre-
   defined DIO options.  Therefore, the security mechanisms defined in
   RPL [RFC6550] apply to this proposed extension."
I don't think this addresses the purpose of a Security Considerations section.

I think it should talk about the potential security issues introduced by the draft, and why they are not real concerns.
I guess that, what this draft changes compared to RFC6550-6551, is the sending of the Parent Set of a node in its DIO. From there:
- This could result in a privacy issue. Yes, but the Parent Set is not propagated further down the DODAG, so this disclosure does not reach far beyond the propagation range of the radios of the Parents. So no tracking of nodes by their IPv6 address possible from remote (a least no more than in the current situation).
- This could result in introducing a vulnerability: could an attacker exploit the knowledge gained from learning the PS? …

Best regards

De : Roll <<>> on behalf of "Georgios Z. Papadopoulos" <<>>
Répondre à : "<>" <<>>
Date : Monday 10 February 2020 16:51
À : "<>" <<>>
Objet : [Roll] Fwd: New Version Notification for draft-ietf-roll-nsa-extension-06.txt

Dear all,

FYI, we just submitted the 06 version where we addressed the comments from Rahul.

Many thanks Rahul,
Georgios and Aris

Begin forwarded message:

Subject: New Version Notification for draft-ietf-roll-nsa-extension-06.txt
Date: February 10, 2020 at 16:16:06 GMT+1
To: "Nicolas Montavont" <<>>, "Pascal Thubert" <<>>, "Georgios Papadopoulos" <<>>, "Remous-Aris Koutsiamanis" <<>>

A new version of I-D, draft-ietf-roll-nsa-extension-06.txt
has been successfully submitted by Remous-Aris Koutsiamanis and posted to the
IETF repository.

Name: draft-ietf-roll-nsa-extension
Revision: 06
Title: Common Ancestor Objective Function and Parent Set DAG Metric Container Extension
Document date: 2020-02-10
Group: roll
Pages: 15

  Implementing Packet Replication and Elimination from/to the RPL root
  requires the ability to forward copies of packets over different
  paths via different RPL parents.  Selecting the appropriate parents
  to achieve ultra-low latency and jitter requires information about a
  node's parents.  This document details what information needs to be
  transmitted and how it is encoded within RPL control packets to
  enable this functionality.  This document also describes Objective
  Function which take advantage of this information to implement multi-
  path routing.

Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at<>.

The IETF Secretariat


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