I am a cable cord cutter. Xfinity just saddled me with a 1tb data cap. I have 4 Chromecast devices that constantly download / cycle "backdrop" photos whether TV is on or off. This burns about 100gb per month total for 4 devices. Can I use pi-hole to redirect requests to local stored photos? Alternatively, just block them?
If this is possible, how do I go about it? Already have pi-hole set up and working.
Blocking them outright should be straightforward. You just need to determine what domains are being queried when the photos are being downloaded. Two methods for this:
Use tail -f /var/log/pihole.log and watch for relevant domains (real time)
Check the query log in your dashboard for the same information (historical view)
I don't know that anyone on the team has a Chromecast to test with, but let us know what you find out.