I have been using Pi hole for a while, in combination with a 2017 Amazon FireTV stick. I was able to block content to that FireTV stick just fine, to the best of my knowledge. E.g. I was blocking the Alexa voice assistant from connecting to the web successfully
I recently upgraded to a 2019 FireTV 4k stick.
I tried to block all kinds of URLs coming from the FireTV stick, and they do show as blocked in the PiHole UI. FireTV is still establishing a connection to the URL, at least in many cases.
It seems that blocking no longer works effectively, and I was wondering if anyone has had similar experience. My suspicion is that the new FireTV has a backup DNS server in its settings that it uses when connections don’t come through. Any thoughts or ideas?