The issue I am facing:
Some devices including Android use the Google ipv6 DNS instead of the Pi Hole.
Details about my system:
Google fiber router with a raspberry pi.
What I have changed since installing Pi-hole:
The raspberry pi has the latest update including the latest update for Pi hole. I have also enabled the pi hole as the DHCP server for ipv4 and ipv6. I also fallowed the official instructions for enabling DNS-over-HTTPS.
I have set the Google fiber to use the pi hole as the ipv4 DNS. However there is no way to disable DHCP or IPv6 on the Google fiber router. All ipv4 traffic works correctly however there are times on Android and Amazon fire devices (maybe others as well) that when the request is not met for IPv6 by the Pi hole that it will use the Google IPv6 DNS provided by the Google Fiber router.
Is there a way to setup an iptable firewall (on the Pi hole) to block the ipv6 DNS IP addresses on the network?