Enable IPv6 on your newer CenturyLink modem

In the WAN settings section of your modem's advanced settings, you can enable the IPv6 address on your modem. Please note that IPv6 is not available in all areas, and not all modems are compatible with IPv6.  
NOTE:  This article applies to newer CenturyLink modems. Depending on your particular model, you may see slight differences in the features or layout of your modem's user interface.
Modem Advanced Step 1-4

1.  Connect a device, such as a computer or tablet, to the internet through WiFi or using an Ethernet cable connected to your modem.

2.  Open a web browser and type http://192.168.0.1 into the web address field.

3.  Log in to the modem's online user interface (Modem GUI) using your Administrator Username and Administrator Password. Unless you have changed the default settings, you can find this information on the modem's sticker. Note that these are different from your wireless SSID and security key.

4.  Select "Advanced Setup."

5.  Select "WAN Settings" in the left sidebar. Select the ISP protocol from the dropdown, or choose "Auto Select."

6.  Select "Enable" for the 6rd State and enter the IP addressing values.

7.  Select "Apply" to save your changes.

8.  Next, select "LAN Subnets" in the LAN Settings section of the menu. 

9.  Scroll down and select "Add IPv6" or "Edit IPv6" (varies by model).

10.  Select "Stateless" for the IPv6 Addressing State. If the Network Address does not populate automatically, look up the IPv6 address in the Modem Status menu and enter it here.

11.  Select "Add" or "Apply" to save your changes. 

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