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Re: [v6ops] I-D Action: draft-ietf-v6ops-conditional-ras-01.txt

神明達哉 <jinmei@wide.ad.jp> Wed, 21 March 2018 19:26 UTC

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From: 神明達哉 <jinmei@wide.ad.jp>
Date: Wed, 21 Mar 2018 12:26:40 -0700
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To: Lorenzo Colitti <lorenzo@google.com>
Cc: "Mudric, Dusan (Dusan)" <dmudric@avaya.com>, "v6ops@ietf.org" <v6ops@ietf.org>
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Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-conditional-ras-01.txt
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At Wed, 21 Mar 2018 18:34:14 +0000,
Lorenzo Colitti <lorenzo@google.com> wrote:

> > [[Dusan]] This is an implementation aspect. If hosts implement the Prf
> > from rfc4191#section-2.2, they will recognize Rrf. You should not limit the
> > options based on the current implementations.
>
> Actually, we should. This is an operational working group, and as such,
> needs to document practices that work today.

I've not closely followed this thread so this may be out of context
(if so, sorry), but if it's about host implementation of the "Prf"
value of RFC4191, BSD variants have been supporting it for more than
10 years (for example, FreeBSD added it in 2006
https://svnweb.freebsd.org/base/head/sys/netinet6/nd6_rtr.c?revision=156871&view=markup).
So I suspect it's also in iOS.  Unlike other features of
the RFC like route information option, implementing Prf is pretty
simple, so I wouldn't be surprised if it's also available in non
BSD-flavor host implementations.

--
JINMEI, Tatuya

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