I recently bought a Netgear N600 DGND3700 to replace my old aged 2Wire modem router. I connected it up no problem, but when it came to connect to the internet, It didn't connect. The 2.4GHz and 5GHz frequencies are working, the LED's being green and blue, the DSL LED's being green, but when it comes to the internet LED; It's red. Everything else seems to be working. When I changed it back to the 2Wire modem router, the internet could connect well and didn't have a problem connecting both DSL and Internet. What haven't I done, or done right?