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Own a Roku TV or streaming device? You're about to see a lot more ads on your home screen
(www.techradar.com)
This is a most excellent place for technology news and articles.
Then we switch from DNS and look to good old firewall blocks.
Update to say device is 'offline' unless it can reach these IPs? Local NAT to direct the traffic to a basic ping box.
Game keeps being played until someone quits.