Microsoft's nslookup Implementation Problems

[Merton Campbell Crockett]

On Jun 14, 2010, at 7:03 AM, b19141 at anl.gov wrote:

> On 06/13/10 13:00, Merton Campbell Crockett wrote:
>> Microsoft's nslookup is broken.  What alternative applications that can
>> be installed and used in a Windows XP environment that will continue to
>> work in a Windows 7 environment after a decision is made to upgrade Windows?
> 
> In this discussion, I have not seen any definition/details as to
> what is "broken".

I identified the problem in my original message.  The Windows nslookup problem involves the failure to send DNS queries to the name server specified on the command line.

	nslookup alliance.gd-ais.com ns.azsd01.gd-ais.com

When used in an interactive mode, the same failure occurs.

	nslookup
	> server ns.azsd01.gd-ais.com
	> alliance.gd-ais.com

The response displayed by Windows nslookup in both cases indicate that the information was obtained from the specified name server.  However, if you have tcpdump running on the name server, you will find that the name server was never queried.

In each of the above cases, had the name server been queried, the user would have received two A records for the Internet accessible portal that allows employees at customer sites, customers, and vendors to access alliance.gd-ais.com.  What was displayed was the internal address for alliance.gd-ais.com. 


--
Merton Campbell Crockett
m.c.crockett at roadrunner.com




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