I am an ex-Cisco employee. I have both an Ethernet and wireless network setup in my home. I have all my equipment divided up between devices that need to be mobile and those that don't. My Roku doesn't. The WiFi is on one network and the Ethernet is on another. I'm trying to connect my cellphone to the Roku. It worked at one time on my Nexus 4. But I had to upgrade to a Nexus 6. Now I can't enter the IP address in the app of the Roku. What am I missing?