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Windows XP client computers send FQDN DHCP option (81) request packets even if DNS dynamic update protocol registration is disabled globally

Article ID: 890210 - View products that this article applies to.

SYMPTOMS

On a Microsoft Windows XP-based client computer, you disable domain name system (DNS) dynamic update protocol registration globally by setting the DisableDynamicUpdate registry entry value to 1. You may find that the client computer continues to send the Fully Qualified Domain Name (FQDN) Dynamic Host Configuration Protocol (DHCP) option (81) in a request packet to the DNS server.

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CAUSE

This problem occurs because DHCP clients do not read the DisableDynamicUpdate registry entry value correctly.

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RESOLUTION

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

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

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

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

You must have Microsoft Windows XP Service Pack 1 (SP 1) or Microsoft Windows XP Service Pack 2 (SP 2) installed before you apply this hotfix.

Restart requirement

You must restart the 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 file attributes) 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
   ----------------------------------------------------------
   30-Mar-2005  17:32  5.1.2600.2643     148,480  Dnsapi.dll

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After you apply the hotfix, use one of the following methods to disable domain name system (DNS) dynamic update protocol registration globally:

Method 1

Click Start, click Run, type regedit, and then click OK.
Locate and then click the following subkey:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
On the Edit menu, click New, click DWORD Value, and then type DisableDynamicUpdate.
Right-click DisableDynamicUpdate, click Modify, in the Value data box, type 00000001, and then click OK.
Quit Registry Editor.

Method 2

Click Start, click Run, type regedit, and then click OK.
Locate and then click the following subkey:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Dnscache\Parameters
On the Edit menu, click New, click DWORD Value, and then type RegistrationEnabled.
Right-click RegistrationEnabled, click Modify, in the Value data box, type 0, and then click OK.
Quit Registry Editor.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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MORE INFORMATION

For more information description of the standard terminology that is used to describe Microsoft Software Updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684

(http://support.microsoft.com/kb/824684/ )

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

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