Microsoft KB Archive/890856

= A program that uses raw sockets may not see incoming UDP packets in Windows 2000 =

Article ID: 890856

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
In Microsoft Windows 2000, when you run a program that uses raw sockets, and the raw sockets use the WSAIoctl function with the SIO_RCVALL flag, the program does not see an incoming User Datagram Protocol (UDP) packet. The application sees only the outgoing Internet Control Message Protocol (ICMP) packet. This problem occurs even though the UDP packet is set to an unbound port.

For example, this problem occurs when your program uses the Rcvall code sample that is included in the Windows 2000 software development kit (SDK). Programs that are affected may include a call that is similar to the following: WSAIoctl(               Socket, SIO_RCVALL, &Option, sizeof(Option), NULL, 0,                &Length, NULL, NULL                );



CAUSE
This problem occurs because the TCP/IP stack lacks the code that is required to handle this scenario correctly.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, 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
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 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 -  19-Jun-2003  19:05  5.0.2195.6687  120,240  Afd.sys 19-Jun-2003 19:05  5.0.2195.6602  108,816  Msafd.dll 08-Dec-2004 04:08  5.0.2195.7008  319,792  Tcpip.sys 19-Jun-2003 19:05  5.0.2195.6655   16,240  Tdi.sys 19-Jun-2003 19:05  5.0.2195.6601   17,680  Wshtcpip.dll



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



MORE INFORMATION
For additional information about the new file naming schema for Microsoft Windows software update packages, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For additional information about the terminology that is used in this article, 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: kbbug kbfix kbqfe kbwin2000presp5fix KB890856

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