I have a dual band xfinity wifi modem 802.11ac XB3 since it was installed, about once a week. BOTH phone lights on the modem are lit up. I only have ONE phone. I can restart the modem and the second phone light disappears for a while, but it always comes back (solid, not blinking). I did some research on the forums last night and noticed others were having issues ONE YEAR AGO! It was diagnosed as a "bug". Well, shouldn't that bug have been fixed by now? or once a bug, always a bug and a shrug of the shoulders? I find this unsettling that xfinity has not found a fix after a year? Does someone have access to my phone? can someone be highjacking my outside line?