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

[John Levine <[e-mail]>]

>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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