Re: [v6ops] [EXTERNAL] Re: 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> Tue, 16 February 2021 13:54 UTC

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From: Ted Lemon <mellon@fugue.com>
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Subject: Re: [v6ops] [EXTERNAL] Re: Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
Date: Tue, 16 Feb 2021 08:54:30 -0500
In-Reply-To: <6167230f-b32a-e995-c071-b6c199ac5d64@si6networks.com>
Cc: Bob Hinden <bob.hinden@gmail.com>, "Manfredi (US), Albert E" <albert.e.manfredi@boeing.com>, IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
To: Fernando Gont <fgont@si6networks.com>
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On Feb 15, 2021, at 11:05 PM, Fernando Gont <fgont@si6networks.com> wrote:
> Some of this clarification might have a side-effect in things like programming-language macros and libraries, as e.g. has proven to be the case for Python.

Python apparently wrongly identifies a ULA as non-global. Reading the ULA specification would have helped with that. Following RFC 6724 would have helped with that. Implementors not reading both RFCs carefully is what resulted in the problem Brian discovered.