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1493

How can I disable IPv6 on my computer?

Most computer networks (including Sussex Resnet) support Internet Protocol version 4 (IPv4) as the preferred Internet Layer protocol. Internet Protocol version 6 (IPv6) is an emerging Internet Protocol that will eventually succeed IPv4 for general use on the Internet, but at the moment networks requiring IPv6 are extremely rare and the extra functionality of IPv6 is not required.

Microsoft Windows Vista (and Apple Mac OS X 10.4 or newer) have both IPv4 and IPv6 support enabled by default, and have included several technologies to allow IPv6 traffic to cross IPv4 networks (such as Teredo and Miredo).

IPv6 is not required to connect to ResNet and can be disabled as follows:

Windows Vista:

1. Click on the Start button (lower left corner)
2. Click on Network
3. Click on Network and Sharing Center, then click Manage Network Connections on the left side of the window
4. Right click on the Local Area Connection icon and select Properties
5. Uncheck Internet Protocol Version 6 (TCP/IPv6), then click Apply
6. At the top, click the Sharing tab
7. Under the Internet Connection Sharing section, make sure that the checkbox in front of Allow other network users to connect through this computer's Internet connection is NOT ticked
8. Click OK
9. Close down and Restart your machine

Windows XP:

IPv6 is normally a custom setting not typically set by users.

MacOS 10.4 (Tiger) or later:

1. Click on the Apple icon (top left corner)
2. Click on System Preferences
3. Click on Network
4. Highlight Built in Ethernet
5. Click on configure
6. Select TCP/IP (if the padlock in the bottom left hand corner is locked, you will will need to click it to unlock it, and then enter your System Password)
7. Click on Configure IPv6 and change the drop-down menu from Automatically to Off
8. Click OK
9. Click Apply Now (you may need to re-enter your System Password)
10. Quit System Preferences