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Re: [Hipsec] rfc5201-bis-04 internationalized domain names

"Jiankang YAO" <yaojk@cnnic.cn> Tue, 20 September 2011 03:19 UTC

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From: Jiankang YAO <yaojk@cnnic.cn>
To: "Henderson, Thomas R" <thomas.r.henderson@boeing.com>, 'Samu Varjonen' <samu.varjonen@hiit.fi>, hipsec@ietf.org
References: <4D7D730F.5050800@hiit.fi> <4E647FBB.9050105@hiit.fi> <515324874.05146@cnnic.cn>
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Subject: Re: [Hipsec] rfc5201-bis-04 internationalized domain names
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----- Original Message ----- 
From: "Henderson, Thomas R" <thomas.r.henderson@boeing.com>
To: "'Samu Varjonen'" <samu.varjonen@hiit.fi>; <hipsec@ietf.org>
Sent: Wednesday, September 07, 2011 12:00 AM
Subject: Re: [Hipsec] rfc5201-bis-04 internationalized domain names


>> > "
>> > The format for the FQDN is defined in [RFC1035] Section 3.1.
>> > Internationalized Domain Names (IDNs) MAY be included in the Domain
>> > Identifier (DI). Conforming implementations MUST convert IDNs to the
>> > ASCII compatible Encoding (ACE) format as specified in Section 4 of
>> > [RFC3490] before storage to the DI. When comparing the FQDNs for
>> > equality, conforming implementations MUST perform a case-insensitive
>> > exact match on the entire FQDN. Conforming implementations should
>> > convert IDNs to Unicode before display by performing the conversion
>> > operation specified in Section 4 of [RFC3490]. The non-conforming
>> > implementations may identify IDNs by checking the inclusion of the
>> IDN
>> > ACE label additional characters "xn--" in any capitalization. All
>> > implementations MUST allow for increased space requirements for IDNs
>> in the DI.
>> >
>> > The format and internationalization for NAI is defined in [RFC4282].
>> > "
>> >
>> > Comments and a sanity check would be appreciated.
>> >
> 
> I don't have any objection to adding the above (I can't really provide a sanity check since I'm not familiar with IDNs and we haven't tried to implement this).
> 

IDNA has been updated to IDNAbis (RFC5890-5894).
RFC3490 is obsoleted.

the new name for ACE label is A-label in RFC5890.


Jiankang Yao



> - Tom
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