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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)

Philip Homburg <pch-ipv6-ietf-7@u-1.phicoh.com> Thu, 07 January 2021 11:41 UTC

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To: ipv6@ietf.org
Cc: Brian E Carpenter <brian.e.carpenter@gmail.com>, IPv6 Operations <v6ops@ietf.org>
Subject: Re: [v6ops] Scope of Unique Local IPv6 Unicast Addresses (Fwd: New Version Notification for draft-gont-6man-ipv6-ula-scope-00.txt)
From: Philip Homburg <pch-ipv6-ietf-7@u-1.phicoh.com>
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Date: Thu, 07 Jan 2021 12:41:35 +0100
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> > No, rewrite RFC 4007 and get rid of zone IDs. And the introduce interface I
> Ds
> > to select the interface of an outgoing packet, whether link-local or global
> .
> 
> Effectively that's what RFC3879 did. RFC4007 was a bit behind the
> curve. As far as I know, zone IDs and interface IDs are exactly
> equivalent (at least in POSIX and WinSock environments). IMHO this
> is *only* a terminology question.
> 
> > It doesn't change anything in practice, because that is what existing code
> > does.
> 
> Really? Using the interface ID for non-link-local addresses?

It works on Linux and MacOS. On freebsd I get
'2001:67c:2e8:3::c100:a4%re0: Name does not resolve'
which suggests that they do an extra check in a library. I didn't check
if the kernel handles it.

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