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Re: MacOS X Case-Sensitive DNS lookup bug

From: David M. Dantowitz
Date: Wednesday, July 11, 2001
Time: 7:50:29 pm

I'll chime in since FaxBee is our product and many of our sites use a
caching server (cache4.DigitalStore.com) for images.

Running 10.0.4 here (latest upgrade last week) shows the same problem
with IE. Running a totally VANILLA, straight install of 10.0 and upgrade
to 10.0.4.

The problem may change a wee bit in the next few weeks as we'll stop
using the caching server, but often our domain names and web site
addresses have upper and lower case letters, so the problem may still be
there.

Any ideas? Anyone seeing the same problem with
<http://www.dantowitz.com/> or <http://www.FaxBee.com/> ?

Thanks,

David

----

Aaron Lynch at a.list@ninewire.com said this on 7/11/01 4:01 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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