How to configure an IPv6 subnet on a Dedibox running Windows Server

Reviewed on June 09, 2025

Before you start

To complete the actions presented below, you must have:

• A Dedibox account logged into the console
• A Dedibox dedicated server
• Requested a /48 IPv6 prefix

How to set the DUID in the Windows Registry

1. Launch the Registry Editor by typing regedit.exe in the start menu: Open Image over content
   Close current Lightbox
2. Scroll down until you reach the following setting: HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\TCPIP6\Parameters and edit the value Dhcpv6DUID with the DUID of your block by double clicking on the default value: Open Image over content
   Close current Lightbox

How to configure IPv6 connectivity

1. Go to your network settings, and double-click on your internet connection.
2. Open the connection details and enter the IPv6 settings. Set the IP of the machine to an IPv6 address of your subnet and the netmask: Open Image over content
   Close current Lightbox
3. Once you have saved the configuration, open a terminal and test the connection by running a ping -6 google.com or tracert -6 google.com: Open Image over content
   Close current Lightbox