Microsoft KB Archive/833427

= Subnet prioritization on a client computer truncates the record list that the DNS server returns =

Article ID: 833427

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition

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SYMPTOMS
You can use subnet prioritization on the client computers on your network to reduce network traffic across subnets. Subnet prioritization reduces network traffic by forcing the client computers to connect to network resources that are closer to the client computers. However, the number of A resource records in the host file that is sent to your computer that is running Microsoft Windows Server 2003 may be reduced to a smaller number of IP address mappings.

To view this problem, use the ping command at a command prompt on a DNS client computer that is running Windows Server 2003. Ping the host record that is specified in the host file that has multiple A records on the DNS server. Use the command ipconfig /displaydns to view the DNS cache on the client computer to determine if records have been lost.



CAUSE
This problem occurs because subnet prioritization on the client computer truncates the record list that the DNS server returns. This problem occurs if groups of IP addresses are on different subnets.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version       Size    File name           Platform --  08-Dec-2003  06:48  5.2.3790.109  414,720  Dnsapi.dll         IA-64 08-Dec-2003 06:43  5.2.3790.109  151,040  Wdnsapi.dll        X86 06-Dec-2003 01:17                    271  Branches.inf 08-Dec-2003 07:28                 10,165  Kb833427.cat 08-Dec-2003 07:11                    354  Updatebr.inf 08-Dec-2003 07:12                  5,909  Update_rtmqfe.inf



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article.



MORE INFORMATION
For additional information about the terminology that is used to describe Microsoft product updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe kbwinserv2003presp1fix KB833427

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