Re: [DNSOP] draft-liman-tld-names-04
Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> Sat, 13 November 2010 10:49 UTC
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Date: Sat, 13 Nov 2010 19:49:17 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
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To: Patrik Fältström <patrik@frobbit.se>
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Cc: dnsop@ietf.org
Subject: Re: [DNSOP] draft-liman-tld-names-04
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Some non-ASCII name wrote: >> As the upper case character corresponding to 'y' with diaeresis >> is not uniquely defined, for example, localized domain names >> are unusable >> >> It should be noted that, extended case insensitivities beyond >> European characters, such as correspondence between Chinese >> ones, the problem is even more unsolvable. >> >> It should clarify how localized domain names are useless. > > I have two problems with this text. First that I think it is wrong. Then, what is the upper case character corresponding to 'y' with diaeresis under localization context of ISO 8859/1, which is what you are using in your mails as: From: =?iso-8859-1?Q?Patrik_F=E4ltstr=F6m?= <patrik@frobbit.se> ? > Secondly that the way IDN and other localization initiatives is > by being a) backward compatible [so that the matching algorithm > can not be changed -- regardless of what you want] b) because of > [a] it pushes the "case insensitivity" matching by asking > applications to canonicalize in a way so that if > canonicalize(a) == canonicalize(b), then a == b, i.e. not do > the canonicalization in the DNS protocol itself. Because the > matching function can not be changed. If extended case insensitivities or canonicalization is not handled by DNS severs and resolvers, which requires universal definition, it causes unsolvable problems of: 1) cache inefficiency 2) wasted operational effort for synchronization of multiple zones with effectively same FQDN 3) exponential explosions of the number of labels with effectively same FQDN 4) doubly exponential explosions of the zones with effectively same FQDN for DNSSEC That's why I wrote postscript in my previous mail. PS> While it is trivially easy to define ASCII representation of PS> Unicode, it is impossible to operate it, especially when PS> (extended) case insensitivities are involved. > and let the explanation on case insensitivities (etc) are in > the RFC589x IDNA2008 RFCs. It's simply not operational. Masataka Ohta
- [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Mans Nilsson
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Paul Hoffman
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Suzanne Woolf
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 ]ke Nordin
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 David Conrad
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Richard Clayton
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Suzanne Woolf
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 David Conrad
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 David Conrad
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- [DNSOP] Writing rules for French (Was: draft-lima… Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Mark Andrews
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 James Mitchell
- Re: [DNSOP] Writing rules for French (Was: draft-… Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] Writing rules for French (Was: draft-… Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] Writing rules for French (Was: draft-… Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Mark Andrews
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- [DNSOP] clue w.r.t. arabic (was: Re: draft-liman-… Eric Brunner-Williams
- Re: [DNSOP] clue w.r.t. arabic Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] clue w.r.t. arabic Masataka Ohta
- Re: [DNSOP] clue w.r.t. arabic Eric Brunner-Williams
- Re: [DNSOP] clue w.r.t. arabic Masataka Ohta
- Re: [DNSOP] clue w.r.t. arabic Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 James Mitchell
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Patrik Fältström
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Alfred Hönes
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 David Conrad
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Richard Clayton
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Mark Andrews
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Doug Barton
- Re: [DNSOP] draft-liman-tld-names-04 Jaap Akkerhuis
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Joe Abley
- Re: [DNSOP] draft-liman-tld-names-04 Suzanne Woolf
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 James Mitchell
- Re: [DNSOP] draft-liman-tld-names-04 Chris Wright
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Andrew Sullivan
- Re: [DNSOP] draft-liman-tld-names-04 Andreas Gustafsson
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Eric Brunner-Williams
- Re: [DNSOP] draft-liman-tld-names-04 David Conrad
- Re: [DNSOP] draft-liman-tld-names-04 Masataka Ohta
- Re: [DNSOP] draft-liman-tld-names-04 Tony Finch
- Re: [DNSOP] draft-liman-tld-names-04 Stephane Bortzmeyer
- Re: [DNSOP] draft-liman-tld-names-04 Mark Andrews