Newly Added Static Route Is Gone After Reception of ICMP Redirect Message

This article was previously published under Q289211
This article has been archived. It is offered "as is" and will no longer be updated.
After you add a static route to the route table of a host computer, the static route is deleted if that host computer receives an Internet Control Message Protocol (ICMP) redirect message from the same gateway that is defined in the static route. After 10 minutes, you can no longer reach the host for which you added the route.
This behavior occurs because Windows 2000 handles redirects without first verifying that the address of the first new hop is different from the source of the redirect. The route that is obtained by the ICMP redirect overwrites the static route and is added to the route table, but for only 10 minutes.
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 theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Microsoft has confirmed that this is a problem in Microsoft Windows 2000.

This problem was first corrected in Windows 2000 Service Pack 2.

More information
195686 Explanation of ICMP Redirect Behavior

244539 Host Route Can Be Deleted if ICMP Fragmentation Is Needed

Article ID: 289211 - Last Review: 10/26/2013 04:54:00 - Revision: 4.0

Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Professional Edition

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