A server that is running Microsoft Windows Server 2003 may not recognize the new Teredo address format

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Article ID: 922483 - View products that this article applies to.
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SYMPTOMS

A server that is running Microsoft Windows Server 2003 may not recognize the new Teredo address format. This format is implemented in the new IPv6 standard.

MORE INFORMATION

Service pack information

To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have Windows Server 2003 Service Pack 1 or an x64-based version of Windows Server 2003 installed. For more information about how to obtain Windows Server 2003 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Server 2003, x86-based versions
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File nameFile versionFile sizeDateTimePlatformSP requirementService branch
6to4svc.dll5.2.3790.273999,84004-Jul-200613:23x86SP1SP1QFE
Tcpip6.sys5.2.3790.2739223,48804-Jul-200610:02Not ApplicableSP1SP1QFE
Windows Server 2003, Itanium-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
6to4svc.dll5.2.3790.2739362,49604-Jul-200601:12IA-64SP1SP1QFE
Tcpip6.sys5.2.3790.2739729,85604-Jul-200601:12Not ApplicableSP1SP1QFE
W6to4svc.dll5.2.3790.273999,84004-Jul-200601:12x86SP1WOW
Windows Server 2003, x64-based versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatformSP requirementService branch
6to4svc.dll5.2.3790.2739124,41604-Jul-200601:10x64SP1SP1QFE
Tcpip6.sys5.2.3790.2739358,65604-Jul-200601:10x64SP1SP1QFE
W6to4svc.dll5.2.3790.273999,84004-Jul-200601:10x86SP1WOW

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Server 2003 Service Pack 2.

MORE INFORMATION

This hotfix changes the Teredo address prefix from 3ffe:831f::/32 to 2001:0000::/32.

The new Teredo address prefix was introduced as part of the Internet Assigned Numbers Authority (IANA) standardization of the Teredo address format in Request for Comments (RFC) 4380, "Teredo: Tunneling IPv6 over UDP through Network Address Translations (NATs)." Host servers use two kinds of Teredo address prefixes: the old Teredo address prefix of 3ffe:831f::/32 and the new Teredo address prefix of 2001:0000::/32. Host servers that use the old address prefix cannot communicate with host servers that use the new address prefix.

To configure a host server to use the new Teredo address prefix, use one of the following methods:
  • Install the hotfix that is described in this article.
  • Install the IPv6 security update that was released on October 10, 2006.
  • Wait until the next Windows Server 2003 service pack is released. Then, install the service pack.
The new address prefix was deployed with the IPv6 security update as part of a broader IPv6 initiative. For more information about the IPv6 security update, visit the following Microsoft Web site:
http://www.microsoft.com/technet/security/bulletin/ms06-064.mspx
We strongly recommend users to install the security update on host servers that use IPv6 or Teredo. If the server does not use IPv6, we recommend that you wait for the next service pack.

For more information about Teredo, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/network/cc917486.aspx
For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Technical support for x64-based versions of Microsoft Windows

If your hardware came with a Microsoft Windows x64 edition already installed, your hardware manufacturer provides technical support and assistance for the Windows x64 edition. In this case, your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation by using unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with a Windows x64 edition. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware. If you purchased a Windows x64 edition such as a Microsoft Windows Server 2003 x64 edition separately, contact Microsoft for technical support.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site:
http://www.microsoft.com/windowsxp/64bit/default.mspx
For product information about x64-based versions of Microsoft Windows Server 2003, visit the following Microsoft Web site:
http://www.microsoft.com/windowsserver2003/64bit/x64/editions.mspx

Properties

Article ID: 922483 - Last Review: October 9, 2011 - Revision: 3.0
APPLIES TO
  • Microsoft Windows Server 2003, Datacenter x64 Edition
  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • Microsoft Windows Server 2003, Standard x64 Edition
  • Microsoft Windows Server 2003 Service Pack 1, when used with:
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
Keywords: 
kbautohotfix kbwinserv2003sp2fix kbwinserv2003sp1fix kbexpertiseadvanced kbbug kbfix kbHotfixServer kbqfe KB922483

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