D-Link Wireless AC1200 User Manual page 18

Section 3 - Configuration
If the router does not detect the type of Internet connection you have,
you will see a list of connection types. Select your Internet connection
type. This information can be obtained from your ISP (Internet Service
Provider).
Select DHCP Connection (Dynamic IP Address) if your Internet
connection automatically provides you with an IP address. This option
is commonly used for cable modem services.
Click Next to continue.
If the router detected PPPoE or you selected Username/Password
Connection (PPPoE), enter your PPPoE username and password supplied
by your ISP.
Click Next to continue.
Note: Make sure you remove your PPPoE software from your computer. The
software is no longer needed and will not work through a router.
D-Link DIR-850L User Manual 13