I've been monitoring my connection using ThinkBroadband's Broadband Quality Monitor for a while now, but as of about 6:30am this morning my graph is showing 100% packet loss despite my connection working fine, and my IP address being unchanged.
I tried looking for the WAN Ping Respond option that's supposed to be in the router settings under Advanced -> Tools -> Ping (at least according to ThinkBroadband) but that seems to have either disappeared or been moved. I've been able to verify that remote pings are still enabled by ping from a web server I manage, so remote pings can at least get to my router (and it responds), it just seems to be the ThinkBroadband BQM pings that aren't getting through.
I have noticed over the past couple of days that there have been some huge spikes in latency during peak hours, ThinkBroadband actually have an article on that. I haven't really noticed any problems personally as I tend not to stream or play online games much (I prefer to download and watch offline when services allow me to) but could this be related?
I'm just wondering if maybe someone has over-zealously blocked all of ThinkBroadband's remote ping requests so that they're no longer getting through? The BQM is a really handy tool so I'd like to get it working again if I can.
As I say, my connection otherwise appears fine, it's just the BQM that isn't working, but ThinkBroadband are adamant so far that there's no problem on their end.