Additional thoughts on TRANSITIONAL
Shawn.Steele at microsoft.com
Tue Dec 8 19:30:25 CET 2009
From: idna-update-bounces at alvestrand.no [mailto:idna-update-bounces at alvestrand.no] On Behalf Of Andrew Sullivan
Sent: ??????, ???????? 08, ??? 2009 10:26
To: idna-update at alvestrand.no
Subject: Re: Additional thoughts on TRANSITIONAL
On Mon, Dec 07, 2009 at 07:45:50PM +0000, Shawn Steele wrote:
> Right now IE lower-cases everything regardless of the DNS record,
> however presumably they could exist. Additionally, assuming
> "case-preserving" really means that everyone registers lower case
> forms, then we have "case-insensitive" DNS, which IS fairly
> interesting. It isn't hard to find links to sites using an initial
> upper case or camel cased forms.
"Case-preserving" might mean that, if it is registered in the DNS with
mixed case, then a match in the DNS for a differently-cased query will
result in an answer being returned that has the regstered case.
Alternatively, it might mean that you get the case you ask for.
That's the way bind 9.4.2 works:
$ dig -v
$ dig +noall +answer microsoft.com
microsoft.com. 2363 IN A 188.8.131.52
microsoft.com. 2363 IN A 184.108.40.206
$ dig +noall +answer Microsoft.com
Microsoft.com. 2361 IN A 220.127.116.11
Microsoft.com. 2361 IN A 18.104.22.168
Unfortunately, it isn't clear which of these meanings it should be.
ajs at shinkuro.com
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