Intermittent internet issues since gateway firmware upgrade
A couple weeks ago, our gateway's firmware was updated. Seemingly every night since then, between 1 and 3 AM, the connection drops for a minute or two. The Service light goes out, then after a few seconds it starts blinking, and then a minute or two later it goes back to being solid and the connection is restored. The Broadband light remains a solid green. The regularity of it makes me think it's not some random disconnect, but it only started after the firmware update. As best as I can tell, there isn't any outage in our area. I think it might have happened a couple times during the day, but I mostly notice it at night. What could be wrong?