[ccPDP4-IDNWG] Open question 1 : Definition of Variants

[Michael Bauland]

Hi Bart, hi all,


regarding the variant definition, I have a clarification question. Are 
we trying to define a variant TLD label? Or a variant domain name (i.e., 
SLD plus TLD)? Or just a general variant label (independent on whether 
it's TLD or SLD)?

I assume it's just the TLD variant label we are concerned with here.

Here's a suggestion of a new version (under the above assumption) for 
the variant definition:

> On Definition of variants:
> 
> In the text the following definition of variants is proposed:
> 
> *5.2.1 Definition of Variants.*Variant[1] <#_ftn1> (or alternative code 
> points) are understood to mean and are defined  as the allocatable 
> disposition of the selected IDNccTLD string or label, where Allocatable 
> Variants for the Top Level means “a Valid TLD Label (string) that has 
> been processed by the RZ-LGR with a disposition value “allocatable”; the 
> label may be eligible for allocation or delegation as a top-level 
> domain. See RFC 8228 for more details.

The variants of a given (IDN*) ccTLD string or label are understood to 
mean those labels that are considered to be (almost) the same as the 
original string. The set of these variant labels is defined by the 
RZ-LGR. It is calculated by the RZ-LGR using the selected ccTLD string 
as the primary label. This calculation also assigns exactly one of two 
disposition values to each variant label (allocatable or blocked). Only 
the allocatable labels may be eligible for allocation or delegation as a 
top-level domain. See RFC 8228 for details.


* Note that this definition is not really requiring the ccTLD string to 
be an IDN string. There can also be variants for non IDN ccTLD strings.


Feel free to use and adjust this suggestion as a starting point for 
further improvements on the variant definition.

Cheers,

Michael

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