Microsoft KB Archive/243468

= Default Gateway Changes Unexpectedly on Token Ring Network =

Article ID: 243468

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q243468



SYMPTOMS
On a source-routed Token Ring network, your Windows NT-based computer may experience delays or loss of connectivity when you attempt to communicate with other hosts using TCP/IP.

Investigation using Ipconfig or the route print command reveals that the IP address of your default gateway has changed to the address of your local host.



CAUSE
This behavior can occur if TCP/IP receives an invalid ARP request by way of a new source route in which the sender's protocol address field in the ARP packet is 0.0.0.0.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

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

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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.

The English-language version of this fix should have the following file attributes or later:   Date      Time                 Size    File name     Platform -  10/07/99  21:26              152,400   Tcpip.sys     x86 10/07/99 21:24              276,336   Tcpip.sys     Alpha



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbhotfixserver kbqfe kbbug kbfix KB243468

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