The LAN connection on the front of your CAT-DEV is not used for the internet. In order to connect to the internet, you need a secondary network connection. This can either be via a USB LAN adapter, or via a wireless network router. Both the CAT-DEV and CAT-R devkits come equipped with wireless networking.
There are two ways to connect to internet. Both methods can be done on either devkit, but use of the Wii U Menu requires that you have already installed the Wii U Menu Changer.
If you have the Wii U Menu Changer installed, this is the easiest method. This is exactly the same as a retail Wii U. Launch the Wii U menu, go to System Settings > Internet and follow the instructions. You can verify your connection by starting the Internet Browser and trying to view a webpage.
cafex_env.bat
.Select Edit Config.
Set the Connection Mode. If you are setting it to Wireless, go to step 9. If you are setting it to Wired, go to step 10.
For Wireless:
Select Scan.
Select Update to get a list of available wireless networks.
Scroll down and select the desired network.
Select Privacy Key, then use the touchpad or a keyboard to enter the password for the network. The password will be displayed in plain text. To enter the text using a keyboard, either plug a USB keyboard into your devkit, or if you are using a CAT-DEV, you can enter commands using your PC keyboard if your Cafex_env console window has focus.
Once you are finished entering the configuration information for the Access Point, back out of the Edit Config screen
Select Connection Test to see if everything is working correctly.
If everything is working correctly, back out of the Profile 1 screen
Scroll up to Select Default Profile and make sure Profile 1 is selected.
If you are using network features that require an NNID such as Miiverse or an independent server in your game, you will also need to set up an NNID on your devkit.
CONFIDENTIAL