D-Link DIR-822 User Manual page 17

Section 3 - Configuration
If the router detected or you selected PPPoE, enter your PPPoE
username and password and click Next to continue.
Note: Make sure to remove your PPPoE software from your computer.
The software is no longer needed and will not work through a router.
If the router detected or you selected PPTP, enter your PPTP
username, password, and other information supplied by your ISP.
Click Next to continue.
If the router detected or you selected L2TP, enter your L2TP
username, password, and other information supplied by your ISP.
Click Next to continue.
D-Link DIR-822 User Manual 13