A program that calls the DhcpRequestParams function may not work correctly on your Windows XP Service Pack 2-based computer (885270)

CAUSE

This problem occurs because in Windows XP SP2, the DhcpRequestParams function does not work correctly for persistent requests when either of the following conditions is true:

You specify vendor-specific options or you use a non-standard option number on your Dynamic Host Configuration Protocol (DHCP) server.

Note A non-standard option number is also referred to as a "site-specific" option number.
The requested DHCP option is not configured on the DHCP server.

In these scenarios, the correct function parameters are changed and then are rejected as incorrect.

RESOLUTION

Windows XP hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

To install this hotfix, you must be running Windows XP Service Pack 2.

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 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
   --------------------------------------------------------
   27-Sep-2004  23:07  5.1.2600.2524  111,104  Dhcpcsvc.dll

MORE INFORMATION

Callers use the DhcpRequestParams function to synchronously, or synchronously and persistently, obtain DHCP data from a DHCP server. For more information about the DhcpRequestParams function, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn.microsoft.com/library/en-us/dhcp/dhcp/dhcprequestparams.asp

For more information about DHCP options and Bootstrap Protocol (BOOTP) vendor extensions, visit the following Web site:

http://www.faqs.org/rfcs/rfc2132.html

For additional information about Microsoft software 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