Multicast Programs May Not Continue to Receive Frames When a Network Interface Is Turned On Again (314230)

The information in this article applies to:

Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional SP2

This article was previously published under Q314230

SYMPTOMS

If an interface is turned off and then turned on again either by using the user interface or by the MediaSense feature, and if the network adapter is joined to multicast groups, the interface may not continue to receive multicast packets from those groups.

This problem occurs only if the multicast sockets are bound to INADDR_ANY. Multicast groups are rejoined correctly if the socket is bound to a specific interface.

CAUSE

When the interface is turned on again, a "join" message is not sent for each group of which the computer is a member.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date         Time   Version        Size     File name
   --------------------------------------------------------
   19-Nov-2001  16:42  5.0.2195.4667  118,896  Afd.sys
   20-Mar-2002  18:21  5.0.2195.4874  105,232  Msafd.dll
   20-Mar-2002  18:20  5.0.2195.5211  313,200  Tcpip.sys
   30-Jul-2001  20:15  5.0.2195.3988   16,240  Tdi.sys
   20-Mar-2002  18:21  5.0.2195.4874   17,680  Wshtcpip.dll

WORKAROUND

To work around this problem, change the multicast program to monitor for address changes.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

This problem does not occur in Microsoft Windows XP.

MORE INFORMATION

For additional information about this problem, click the article number below to view the article in the Microsoft Knowledge Base:

258875 BUG: Windows 2000 Multicast Groups Are Not Rejoined When Interface Is Enabled

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Modification Type:	Minor	Last Reviewed:	9/26/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbnetwork kbWin2000PreSP3Fix kbWin2000sp3fix KB314230