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Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)

Ted Lemon <mellon@fugue.com> Thu, 18 February 2021 21:05 UTC

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From: Ted Lemon <mellon@fugue.com>
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Subject: Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
Date: Thu, 18 Feb 2021 16:05:47 -0500
In-Reply-To: <7aa2337f8d1b4036a64b3d0d40374eb1@boeing.com>
Cc: Fernando Gont <fgont@si6networks.com>, IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
To: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
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On Feb 18, 2021, at 2:46 PM, Templin (US), Fred L <Fred.L.Templin@boeing.com> wrote:
> I actually think HITs are a bit of a gray area. According to RFC7343, they are
> formed from the GUA prefix 2001:20::/28 but the remaining bits following
> the ::/28 prefix are cryptographically generated and hence non-aggregatable.
> That means that there is no way to represent a group of them in the routing
> system using any other prefix length than /128.

RFC 4007 doesn’t say that they can be aggregated. It just says that they are globally unique.

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