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Re: [Tsv-art] Tsvart last call review of draft-ietf-roll-useofrplinfo-25

Ines Robles <mariainesrobles@googlemail.com> Thu, 02 May 2019 07:16 UTC

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From: Ines Robles <mariainesrobles@googlemail.com>
Date: Thu, 02 May 2019 10:16:27 +0300
Message-ID: <CAP+sJUcKx+BA=CxHH7aAPELCHO_BwKE7oG7OndrW=+QQrSYRmw@mail.gmail.com>
To: Colin Perkins <csp@csperkins.org>
Cc: tsv-art@ietf.org, roll <roll@ietf.org>, ietf <ietf@ietf.org>, draft-ietf-roll-useofrplinfo.all@ietf.org
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Subject: Re: [Tsv-art] Tsvart last call review of draft-ietf-roll-useofrplinfo-25
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Hi Colin,

Thank you for your comments, we will work on it and get back to you.

Cheers,

Ines

On Thu, Apr 11, 2019 at 1:46 PM Colin Perkins via Datatracker <
noreply@ietf.org> wrote:

> Reviewer: Colin Perkins
> Review result: Ready with Nits
>
> This document has been reviewed as part of the transport area review team's
> ongoing effort to review key IETF documents. These comments were written
> primarily for the transport area directors, but are copied to the
> document's
> authors and WG to allow them to address any issues raised and also to the
> IETF
> discussion list for information.
>
> When done at the time of IETF Last Call, the authors should consider this
> review as part of the last-call comments they receive. Please always CC
> tsv-art@ietf.org if you reply to or forward this review.
>
> The draft updates RFC 6553 to use a different IPv6 hop-by-hop option type
> for
> RPL packets, to avoid some issues discovered through deployment experience.
> This looks to require a flag day cutover, and hence has some potential
> interoperability concerns, but introduces no transport concern. The draft
> also
> describes a number of clarifications around when to use the RPL hop-by-hop
> option header and when to use IP-in-IP tunnelling, described based on a
> set of
> use case examples.
>
> There do not look to be any new transport-related concerns with this draft.
>
> The draft does not mention ECN when using IPv6-in-IPv6 tunneling. It is
> perhaps
> implied, but a reference to RFC 6040 would be helpful to clarify how ECN
> bits
> are copied between inner and outer headers when encapsulating and
> decapsulating
> packets from an IPv6-in-IPv6 tunnel. ECN is seeing increasing use in
> transport
> protocols, so correctly propagating this information is important.
>
>
>

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