MAYBE-TRANSITIONAL, a historical tale

Shawn Steele Shawn.Steele at
Tue Dec 8 18:08:18 CET 2009

I don't think registries can enforce lookup.

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-----Original Message-----
From: Eric Brunner-Williams <ebw at>
Sent: Tuesday, December 08, 2009 8:19 AM
To: Mark Davis ☕ <mark at>
Cc: John C Klensin <klensin at>; Martin J. Dürst <duerst at>; idna-update at <idna-update at>; Erik van der Poel <erikv at>
Subject: Re: MAYBE-TRANSITIONAL, a historical tale

how does this work for the registries which choose to make this
"transition" ab initio?

that is, which define "PVALID_AFTER_2015" to be "PVALID" for the
purposes of registration, and which define PVALID_AFTER_2015" to be
"PVALID" for the purposes of lookup?
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