Re: [dnsext] we need help to make names the same, was draft-yao-dnsext-identical-resolution-02 comment

["Vaggelis Segredakis" <[e-mail]>]

John,

Please do not misunderstand the issue here. We did not ask for a wildcard in
DNS, we did not ask for millions of domain names to become one bundle.

We did however ask for the user's choice of registered domain names, the
names he thinks represent better the word he chose for registration to act
as a bundle.

The number of these domain names varies from two (or four if a final sigma
is present) to some tens of domains, not millions and certainly not
billions. The names are specific, not names with star-substituted
characters; just handpicked domain names by the user that should point to
the same services since one user will type them this way while the next user
will type them in an alternative form.

We did not say anything about a pattern to match domain names that look the
same in a language. We asked for a DNS rr that will allow two, three, four,
or tens of chosen domain names to act as if they were interchangeable in all
the branches of the domain name tree, starting from the top. They could be
perfectly normal Latin domain names that point to the same services and the
administrator decides to administer them as one.

Kind Regards,

Vaggelis Segredakis


-----Original Message-----
From: [e-mail] [mailto:[e-mail]] On Behalf Of
John Levine
Sent: Wednesday, February 16, 2011 9:34 AM
To: [e-mail]
Subject: Re: [dnsext] we need help to make names the same,was
draft-yao-dnsext-identical-resolution-02 comment

>Are you requesting DNS hold huge database on exponentially many
>(millions or billions of) variations?

Yes, but of course that does not mean it needs millions or billions
of records stored in servers.

A DNS wildcard matches a very large number of names, roughly
2^(8*(63-K)) where K is the length of the name after the star, but a
DNS server handles that with one pattern record and an algorithm that
tells the server how to match queries with the pattern.

The pattern language for encoding variant names would probably be more
complex than people would like, but if we are serious that all the
spellings of Greek words are equivalent, or traditional and simplified
Chinese are equivalent, I don't see how anything simpler could do the
job.

Regards,
John Levine, [e-mail], Primary Perpetrator of "The Internet for
Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
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