Re: [idn] Suggested clarifications of the IDN requirements document

[Marc Blanchet <Marc.Blanchet@viagenie.qc.ca>]

At/À 07:34 2000-08-09 -0700, Harald Tveit Alvestrand you wrote/vous écriviez:
>Apologies for not having sent these before.
>
>I suggest the following changes to the IDN requirements document, version -03:

...

>------------------
>[4] The protocol SHOULD allow creation of caching servers that do
>not understand the charset in which a request or response is encoded.
>The caching server SHOULD perform correctly for IDN as well as for
>current domain names (without the authoritative bit) as the master
>server would have if presented with the same request.
>
>Change to
>
>[4] The protocol MUST NOT require that current cache servers be modified
>to support IDN. If a cache server can have additional functionality to
>support IDN better, this additional functionality MUST NOT cause problems
>for resolving current domain names.

I don't agree with the Harald's wording, but I probably agree with the intent.
- I think the need is that we want:
  + current cache servers to not break by receiving idn
  + current cache servers must not need to be upgraded to support idn
  + but, depending on the protocol design and transition scenarios, it is 
perhaps possible that
   = we don't need to change the cache servers to support idn
   = and they don't need to "support idn", but to let idn work ok, without 
breaking anything.
- I would add DNS in front of "cache servers", to make sure that people 
will not think about web caches...)

Specifically, I would change to:

[4] The protocol MUST NOT require that current DNS cache servers be 
modified to enable
IDN working. ...

>-------------
>[37] The protocol MUST work for all features of DNS, IPv4, and IPv6.
>
>Change to:
>
>[37] The protocol MUST support the following operations:
>- Mapping an IDN to IPv4 addresses
>- Mapping an IDN to IPv6 addresses
>- Mapping an IDN to an MX record
>The protocol SHOULD support the following operations:
>- Mapping an IPv4 address to an IDN
>- Mapping an IPv6 address to an IDN
>The protocol MAY support other operations.
>The protocol MUST NOT allow an IDN to be returned to a requester
>that requests the IP-to-(old)-domain-name mapping service.

looks too restrictive to me.

Marc.

Marc Blanchet
Viagénie inc.
tel: 418-656-9254
http://www.viagenie.qc.ca

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