Modem WAN connection is unstable
For the past 2 days the modem WAN connection has been unstable. The up and down LEDs on the modem go into a green state then back to blue. Happens every 15-20min and lasts a few min. Anyone can propose a solution. I already power-cycled the modem. I am connected via ethernet. Issue is persists on Wifi and another PC connected via ethernet. Could the model be defective?