What I am trying to do is block a cache ip address from youtube. I read that, videos will stop studdering. Even though I have 15mb internet, I can only view 240p.. I did the traffic shaping tests and everything. Nothing was found.
Here is a thing I found about this youtube Ip address.
So in gufw, I am trying to figure out how to make that rule. I made one in advance, but not sure if done correct.I've managed to block those caches! What you need to do is use Windows Firewall (or iptables if you're linux) to block 188.8.131.52/16. As far as I can tell, this won't block any other websites hosted on XO, but YMMV. Instructions for blocking with windows firewall here. Once 184.108.40.206/16 is blocked, youtube's player logic will fall back to Google's datacenters and stream at beautiful speeds.
What I did is went in advance. Put on deny.... In.... Both... From: 220.127.116.11 port: 24.... To: 18.104.22.168 port: 16
Where I got the numbers. I dunno for sure, but seems to work. I can actually watch 720p without a studder. http://www.newtontips.com/speed-up-youtube-video-streaming-on-windows-with-this-simple-trick/