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Re: MacOS X Case-Sensitive DNS lookup bug

From: Aaron Lynch
Date: Wednesday, July 11, 2001
Time: 1:02:24 pm

10.0.4 fixed the mixed case problem for me.

Maybe you can provide a NS IP number and have somebody else with X try your
server?



On 7/11/01 9:41 AM, The Defendant "Administrator" <admin@aladdinsys.com>
Confessed:

> Hi there,
>
> Back in May, I sent a message to the list about a problem with OS X
> and uppercase domain names. The consensus on the list was that this
> was not a DNS server problem, but an OS problem and definately a bug.
> I've been waiting for a fix and 10.0.4 didn't do it, so I sent my bug
> report to several Mac sites (MacInTouch, MacNN, etc). No one can seem
> to duplicate the problem. So yesterday, I took a PowerBook with OS X
> home and ran the same tests over my DSL connection and found that I
> could not duplicate the problem. When I switched to the DNS servers
> at work, the problem exists. At work today, I've switched DNS servers
> and now my machine is working fine. So my question is why is my DNS
> server (QuickDNS v2.2.1) failing on uppercase domain name lookups,
> but only with Mac OS X clients? If I use dns.aladdinsys.com or
> dns2.aladdinsys.com as my DNS server the tests fail as shown below.
> If I switch to my ISPs DNS server, 216.52.1.1, which is just one hop
> up, the tests are successful. (examples are at the end of this
> message...) What's up with that?
>
> --Eric Kopf
>
> Here is the message that I sent to MacNN, MacInTouch, etc...:
>
> ++++++++
> THE BUG
> =======
> Sites like "http://www.FaxBee.com" are inaccessible under Mac OS X
> (iCab error: Server "www.FaxBee.com" is unknown...). If the domain is
> retyped in lowercase, it works, but with the above site, the graphics
> on the page don't load because they reference a site with a capital
> letter in the domain name (www.Danowitz.com). Some browsers
> circumvent the problem. Internet Explorer will not show an error with
> uppercase names if a lowercase name of the same site exists in either
> the browser's cache or its bookmark list. This problem is
> system-wide, it is not limited to web-browsers. I discovered the
> problem while using the Eudora beta for OS X.
>
> Messages on the QuickDNS list confirm that others are having the same
> problem. You can search the archives here for more info:
> <http://archive.menandmice.com/QDNS/>
>
> ----------------------------------------------------------------------
> Quickdns-Talk Digest #886 - Mi vikudagur, 23. mai 2001
>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Rob Gridley" <rob@mhzdesign.com>
> ----------------------------------------------------------------------
> Quickdns-Talk Digest #887 - Fimmtudagur, 24. mai 2001
>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Aaron Lynch" <a.list@ninewire.com>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Men & Mice Support" <cbuxton@menandmice.com>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Jim Grisham" <jgrisham@dailyillini.com>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Aaron Lynch" <a.list@ninewire.com>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "David M. Dantowitz" <david@dantowitz.com>
> ----------------------------------------------------------------------
> Quickdns-Talk Digest #888 - Fostudagur, 25. mai 2001
>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Warren Michelsen" <Warren@MDCCLXXVI.com>
> Re: MacOS X Case-Sensitive DNS lookup bug
> by "Men & Mice Support" <cbuxton@menandmice.com>
> ----------------------------------------------------------------------
> ++++++++
> If you want to see the bug for yourself, try the following:
>
> Using Mac OS X's Lookupd as described here:
>
> <http://til.info.apple.com/techinfo.nsf/artnum/n24902>
>
> The following searches should all be successful, but only the one in
> lower-case letters is.
>
> % lookupd -d
> lookupd version 208.1 (root 2001.04.26 20:41:08 UTC)
> Enter command name, "help", or "quit" to exit
>
>> agent: DNS
>
>> hostWithName: apple.com
> Dictionary: "D-0x000658f0"
> _lookup_DNS_domain: com
> _lookup_DNS_server: 216.52.26.204
> _lookup_DNS_time_to_live: 86400
> _lookup_DNS_timestamp: 990641785
> _lookup_info_system: DNS
> ip_address: 17.254.3.183
> name: apple.com
>
>> hostWithName: Apple.com
> nil
>
>> hostWithName: aPple.com
> nil
>
>> hostWithName: apPle.com
> nil
>
>> hostWithName: appLe.com
> nil
>
>> hostWithName: applE.com
> nil
>
>> hostWithName: APPLE.COM
> nil
> ++++++++
>
> SAME TEST WITH DNS2.ALADDINSYS.COM AS DNS SERVER
> % lookupd -d
> lookupd version 208.1 (root 2001.04.26 20:41:08 UTC)
> Enter command name, "help", or "quit" to exit
>> agent: DNS
>
>> hostWithName: apple.com
> Dictionary: "D-0x00065440"
> _lookup_DNS_domain: com
> _lookup_DNS_server: 216.52.26.205
> _lookup_DNS_time_to_live: 86400
> _lookup_DNS_timestamp: 994868368
> _lookup_info_system: DNS
> ip_address: 17.254.3.183
> name: apple.com
>
>
>> hostWithName: APPLE.COM
> nil
>
>> hostWithName: aPPle.com
> nil
>
> SAME TEST WITH 216.52.1.1 AS DNS SERVER
> % lookupd -d
> lookupd version 208.1 (root 2001.04.26 20:41:08 UTC)
> Enter command name, "help", or "quit" to exit
>> agent: DNS
>
>> hostWithName: apple.com
> Dictionary: "D-0x00065460"
> _lookup_DNS_domain: com
> _lookup_DNS_server: 216.52.1.1
> _lookup_DNS_time_to_live: 24851
> _lookup_DNS_timestamp: 994867832
> _lookup_info_system: DNS
> ip_address: 17.254.3.183
> name: apple.com
>
>
>> hostWithName: Apple.com
> Dictionary: "D-0x00065460"
> _lookup_DNS_domain: com
> _lookup_DNS_server: 216.52.1.1
> _lookup_DNS_time_to_live: 24840
> _lookup_DNS_timestamp: 994867844
> _lookup_info_system: DNS
> ip_address: 17.254.3.183
> name: apple.com
>
>
>> hostWithName: aPPle.Com
> Dictionary: "D-0x00065460"
> _lookup_DNS_domain: com
> _lookup_DNS_server: 216.52.1.1
> _lookup_DNS_time_to_live: 24813
> _lookup_DNS_timestamp: 994867870
> _lookup_info_system: DNS
> ip_address: 17.254.3.183
> name: apple.com

--
In 1555, Nostradamus wrote:

Come the millennium, month 12
In the home of the greatest power,
The village idiot will come forth
To be acclaimed the leader.


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