My theory has been that if "the Internet is down" (ping failure to heartbeat.belkin.com) the router does DNS hijacking to show the user a diagnostic page. Howev

My theory has been that if "the Internet is down" (ping failure to heartbeat.belkin.com) the router does DNS hijacking to show the user a diagnostic page. However, I haven't found a description of what the problem looks like from the Belkin-user's end, so I have no evidence to back that up.