I have dd-wrt installed on a secondary router that generates wi-fi. I have verizon fios router as the main, but usually keep that (wi-fi) disabled. I noticed that with my new dell xps 15, that when I go onto the dd-wrt router, it can not connect to the internet. I switch over to the verizon router, and it works fine. Another computer on my network is connected to the dd-wrt router, and has no issues whatsoever with connecting to the internet. What is the best way to diagnose what is going on here?