Website look ups getting blocked at random intervals on all servers

[Old Man Internet 4]

I've been noticing the for last week or so that no matter what server I'm connected to after a little while (say, ~15 minutes sometimes more sometimes less) website look ups will stop working completely. I have changed DNS servers as a test which made no difference. I've tried different browsers and they react the same way - like they're not connected at all. I've even watched the traffic with wireshark and haven't noticed anything unusual (DNS traffic goes out and comes back but browsers still act like they have no connection and it's only web browsers). Changing to another server always fixes the issue but then it comes back again. Outside of the tunnel my connectivity is unaffected. No idea what the problem could be. Is this happening to anyone else?

[pedalermike 0]

I'm getting the same thing - really frustrating.