Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
My guess, he has a device that helps with service in his home (like Sprint's Airave, IDK what AT&T calls theirs.) and he probably just disconnects the modem and reconnects it. It appears he's the only one that is having this "issue".
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.