Microsoft KB Archive/836790

= You cannot connect to IPv6 destinations by using tunnels over PPP devices =

Article ID: 836790

Article Last Modified on 10/26/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Professional

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SYMPTOMS
After you install Microsoft Internet Protocol version 6 (IPv6) on a Windows XP-based computer that uses only Point-to-Point Protocol (PPP) connections such as ISDN connections or dial-up connections, you cannot connect to IPv6 addresses using a IPv6 tunnel.



CAUSE
This problem may occur if the computer is not equipped with a physical network adapter. The problem occurs because the internal periodic timer that the IPv6 driver uses is not started until a local area network (LAN) interface is registered.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information
To resolve this problem, obtain the Advanced Networking Pack for Windows XP. For additional information about how to obtain the latest version of the Advanced Networking Pack for Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:

817778 Overview of the Advanced Networking Pack for Windows XP



WORKAROUND
To work around this problem, install the Microsoft Loopback Adapter. To do so, follow these steps:
 * 1) In Control Panel, double-click Add Hardware, and then click Next.
 * 2) Click Yes, I have already connected the hardware, and then click Next.
 * 3) At the bottom of the list, click Add a new hardware device, and then click Next.
 * 4) Click Install the hardware that I manually select from a list, and then click Next.
 * 5) Click Network adapters, and then click Next.
 * 6) In the Manufacturers box, click Microsoft.
 * 7) In the Network Adapter box, click Microsoft Loopback Adapter, and then click Next.
 * 8) Click Finish.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article. This problem was first corrected in Microsoft Windows XP Service Pack 2.

This problem was first corrected in the Advanced Networking Pack for Windows XP.



MORE INFORMATION
For more information about Microsoft IPv6 for Windows XP, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/guidance/cryptographyetc/efs.mspx

For more information about Microsoft IPv6, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/network/bb530961.aspx

Additional query words: IPng IP Next Generation Teredo 6to4 6over4 ISATAP.

Keywords: atdownload kbwinxpsp2fix kbbug KB836790

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