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Default route is used unexpectedly for a VPN connection in Windows 8 and in Windows Server 2012


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Symptoms

After you configure and then connect to a virtual private network (VPN) on a computer that is running Windows 8 or Windows Server 2012, you experience one of the following issues.

Issue 1

Assume that Internet Protocol version 6 (IPv6) is not configured on the Remote Access Service (RAS) client or on the RAS server. Or, the RAS client and the RAS server do not negotiate to use IPv6. In this situation, the default route is used for all IPv6-capable devices.

Issue 2

Assume that Internet Protocol version 6 (IPv4) is not configured on the RAS client or on the RAS server. Or, the RAS client and the RAS server do not negotiate to use IPv4. In this situation, the default route is used for all IPv4-capable devices.

Issue 3

Assume that IPv6 and IPv4 are both configured between the RAS client and the RAS server. Additionally, the RAS client and the RAS server negotiate to use IPv6 and IPv4. However, the Use default gateway on remote network settings for IPv6 and for IPv4 are different. In this situation, if the default gateway is enabled for IPv6 and is disabled for IPv4, the default route is still used for all IPv4-capable devices. Or, if the default gateway is enabled for IPv4 and is disabled for IPv6, the default route is still used for all IPv6-capable devices.

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Resolution

To resolve these issues, make sure that IPv6 and IPv4 are both configured and that the RAS client and the RAS server both negotiate to use IPv6 and IPv4. Additionally, make sure that the Use default gateway on remote network settings for IPv6 and for IPv4 are the same.

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More information

To change the Use default gateway on remote network settings for IPv6 and for IPv4, follow these steps:
  1. Press the Windows logo key+R to open the Run box.
  2. Type ncpa.cpl in the Run box, and then press Enter to open Network Connections.
  3. Right-click the VPN connection, and then click Properties.
  4. Click the Networking tab in the VPN connection properties dialog box, select Internet Protocol Version 6 (TCP/IPv6), and then click Properties.
  5. Click Advanced� in the Protocol properties box.
  6. Click the IP Settings tab in the Advanced TCP/IP Settings box.
  7. To disable the default gateway, clear the Use default gateway on remote network check box. Or, to enable the default gateway, select the Use default gateway on remote network check box.
  8. Click OK to close the Advanced TCP/IP Settings dialog box.
  9. Click OK to close the Protocol properties dialog box.
  10. Select Internet Protocol Version 4 (TCP/IPv4), click Properties, and then repeat step 5 through step 9 to change the default gateway setting for IPv4.
  11. Click OK to close the VPN connection properties dialog box.
Note By default, the Use default gateway on remote network check box is selected.

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Keywords: KB2716544, kbsurveynew, kbexpertiseinter, kbprb

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Article Info
Article ID : 2716544
Revision : 1
Created on : 8/2/2012
Published on : 8/2/2012
Exists online : False
Views : 382