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Re: [v6ops] Suresh Krishnan's Yes on draft-ietf-v6ops-conditional-ras-06: (with COMMENT)

神明達哉 <jinmei@wide.ad.jp> Fri, 10 August 2018 17:28 UTC

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From: 神明達哉 <jinmei@wide.ad.jp>
Date: Fri, 10 Aug 2018 10:27:55 -0700
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To: Jen Linkova <furry13@gmail.com>
Cc: suresh@kaloom.com, russ@riw.us, draft-ietf-v6ops-conditional-ras@ietf.org, v6ops@ietf.org, v6ops-chairs@ietf.org, The IESG <iesg@ietf.org>
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Subject: Re: [v6ops] Suresh Krishnan's Yes on draft-ietf-v6ops-conditional-ras-06: (with COMMENT)
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At Fri, 10 Aug 2018 22:25:50 +1000,
Jen Linkova <furry13@gmail.com> wrote:

> I've added a paragraph clarifying that we only modify preferred
> lifetime and that RFC4862 does not
> allow an RA with both preferred and valid lifetime for the prefix set
> to 0 to invalidate the address completely:
>
> https://tools.ietf.org/html/draft-ietf-v6ops-conditional-ras-07

To be very accurate, it's still allowed if the RA is authenticated:

          Neighbor Discovery [RFC3971]).  If the Router Advertisement
          was authenticated, the valid lifetime of the corresponding
          address should be set to the Valid Lifetime in the received
          option.

(whether v6ops-conditional-ras should be this accurate is a different
question, for which I don't have a strong opinion)

--
JINMEI, Tatuya

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