MacOS X Case-Sensitive DNS lookup bug

Re: MacOS X Case-Sensitive DNS lookup bug

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Date:

Time:

OK, just to cloud the issue a bit more...

In MSIE on 10.0.4 I went to www.FaxBee.com

"the specified server could not be found"

Then I hit reload and it popped right up.

:) neat, huh!?

On 7/11/01 7:48 PM, The Defendant "David M. Dantowitz" <david@dantowitz.com>
Confessed:

> 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.
>>
>>
>>
>

-- Aaron Lynch
System Administrator
NineWire Digital Solutions || http://ninewire.com

Truth is generally the best vindication against slander.
Abraham Lincoln (1809-1865)

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