Quote Originally Posted by ctaranto View Post
WRT is 172.20.0.1
RT is 192.168.15.1

Connected WRT LAN to RT WAN

On the Internet Setup page, should I have "Obtain IP automatically"? If so, should it get a 172.20.0.x address?
Yes it would.

Up to you whether or not you use DHCP but finding the unit to sign into would be easier if it were static...