> I have configured the DD-WRT router to drop and log all
> connection attempts via iptables...
I'd be more interested in seeing the result of letting the connections succeed while timing how long they stay open and how many bytes are sent/received. The fact that thousands of connections are opened is likely a result of retry mechanisms after the connections are dropped at the router. Perhaps the first thing Windows 10 does is let Microsoft know "this system has opted out of the following tracking: ..." so that connections to Windows Update, etc. don't end up logging additional information.I'd also like to see a similar comparison for an average desktop Linux installation, OS X installation, and so on.