Roku may force to use Google DNS addresses instead of DNS addresses configured on router. The problem may be solved by routing the Google DNS addresses to the null route. Check the step by step tutorial for your router below:
Keep in mind: this is not possible to do on every router, as some routers don’t allow to change their settings. Also some ISPs have preconfigured settings which are not allowed to be changed.
This solution will not work on these routers:
We’ll keep updating this list.