TCP/IP Does Not Allow MAC Addresses to Change Dynamically (193157)

The information in this article applies to:

Microsoft Windows NT Server 4.0 Terminal Server Edition
Microsoft Windows NT Server 4.0
Microsoft Windows NT Workstation 4.0
Microsoft Windows NT Server, Enterprise Edition 4.0

This article was previously published under Q193157

SYMPTOMS

In Service Pack 3 and earlier, if the media access control address of a network interface card (NIC) is changed dynamically (for example, through kernel mode drivers), the TCP/IP protocol will not automatically respond to the change.

In Service Pack 4, a new status indication was added so that TCP/IP may respond appropriately to the change.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Modification Type:	Major	Last Reviewed:	6/28/2004
Keywords:	kbbug kbFEA kbfix KB193157