Re: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)

DY Kim <dykim6@gmail.com> Sun, 12 November 2017 02:25 UTC

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Subject: Re: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)
From: DY Kim <dykim6@gmail.com>
In-Reply-To: <e3c690ee-b0b0-07a0-46ec-1ed92f29a7d5@si6networks.com>
Date: Sun, 12 Nov 2017 11:25:12 +0900
Cc: Brian E Carpenter <brian.e.carpenter@gmail.com>, Ole Troan <otroan@employees.org>, IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
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To: Fernando Gont <fgont@si6networks.com>
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I’m not sure whether setting L=0 guarantees node isolation:

  https://tools.ietf.org/html/rfc4861#section-4.6.2

 “L    … When not set the advertisement makes no statement about on-link or off-link properties of the prefix. In other words, if the L flag is not set a host MUST NOT conclude that an address derived from the prefix is off-link.  That is, it MUST NOT update a previous indication that the address is on-link.”

That is, with refreshing L=0 for the same prefix, the previous on-link property of the prefix continues to be valid.

---
DY

> On 12 Nov 2017, at 10:49, Fernando Gont <fgont@si6networks.com>; wrote:
> 
> And if the goal is just to isolate
> nodes, set L=0 in the RAs, and so be it.