1. Click on Advanced Setup on the left tab
2. Click on Layer2 Interface
3. Click on PTM Interface
4. Click Add
5. Don't change any settings, click on Apply/Save
6. Click on WAN Service on the left tab
7. Click Add
8. On the drop down menu, click ptm0(0_1_1), click Next
9. Ensure PPP over Ethernet (PPPoE) is selected, and 802.1P Priority and 802.1Q VLAN ID are set to 0 and 10 respectively. Click Next.
10. Enter your PPP Username, PPP Password, and a name for PPPoE Service Name. Ensure Enable IPv4 for this service is ticked. Click Next.
11. Click Next, Next and Apply/Save.