Microsoft KB Archive/946408

= A Windows Server 2008-based DHCPv6 computer may assign an IPv6 address that is from its exclusion range =

Article ID: 946408

Article Last Modified on 1/7/2008

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APPLIES TO


 * Windows Server 2008 Datacenter
 * Windows Server 2008 Datacenter 32-Bit
 * Windows Server 2008 Enterprise
 * Windows Server 2008 Enterprise 32-Bit
 * Windows Server 2008 for Itanium-Based Systems
 * Windows Server 2008 Standard
 * Windows Server 2008 Standard 32-Bit
 * Windows Web Server 2008

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Beta Information
This article discusses a beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.

No formal product support is available from Microsoft for this beta product. For information about how to obtain support for a beta release, see the documentation that is included with the beta product files, or check the Web location where you downloaded the release.



SYMPTOMS
A Windows Server 2008-based computer that is running Dynamic Host Configuration Protocol for IP version 6 (DHCPv6) may assign an IPv6 address that is from its exclusion range to a client computer.



RESOLUTION
To resolve this problem, do not configure an exclusion range that includes more than 50 percent of the total available addresses in the scope.



MORE INFORMATION
The available addresses in an IPv6 scope are 2 to the power of 64 (2^64). You do not have to configure an exclusion range that is greater than 2 to the power of 32 (2^32).

Keywords: kbexpertiseinter kbtshoot kbprb KB946408

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