Re: [idn] An ignorant question about TC<-> SC

["James Seng/Personal" <jseng@pobox.org.sg>]

Since I am going to reply this with a registration side policy, some of
the points I raise is non-technical in nature. Take note.

> (1)2^n problem. To ensure a Chinese domain name both TC/SC to
> be correctly resolved, 2^n records must be registered and all
> the records point to one IP address (Note: n indicates the total

In practice, you only need to add 1 to 4 records (or as many as
required) into the DNS, the most common variant of the name. The
registrant could choose which the n.

The registry could forbid the registration of other 2^n possible
(including TSTTS, TSSST, TSTSS etc which is not likely to occur).

> number of registrations will explode. In order to protect their
> domain name, users must register 2^n domain names, registration
> cost will increase rapidly, and this is obviously not practical.

registration cost is not a point of discussion - it is a business issue.
If C offers TC/SC protection vs another V which doesn't, the market
force will decide who will wins out.

> (2)The lower level delegation domain name servers may adopt a
> different domain administrative policy or they simply don't support
> multiple records registration, therefore the consistency of TC/SC
> domain names cannot be ensured.

Then that is the problem on the lower delegation. If the owner of the
domain names decide not deal with the proper handling of his delegation
and causing user confusion, then it is his/her choice. Eventually, he is
going to suffer from the consequences.

> (3)How to ensure that the 2^n records are to be owned by a single
> registered user? This is also an inevitable question, if this cannot
> be ensured, there are will be a large number of domain name
> disputationes.

By proper designing your database to handle this. On DNS, use
CNAME/DNAME as neccessary. This is basically not a technical problem.

> Different registration authorities has different
> registration policies, even if the registration policies can prevent
> gTLD and ccTLD practice; they don't have control over secondary or
> tertiary domain.

Do you mean a ccTLD C should have a control over the policy over another
gTLD V or another ccTLD J?

> 2.Adopting TC only records and SC only records solution - analysis

I did not answer any of the problem raise here because I think no one
here thinks you should only do TC only or SC only.

-James Seg