Pi-Hole appears to be configured correctly, but does not block ads

Help
1

Expected Behaviour:

Going to websites such as CNN.com or Test Ad Block - Toolz should show some resemblance of an active adblocker

Actual Behaviour:

Advertisements are still active on all websites visited and the d3ward adblock tester shows only 4% blocked. I've setup my router (TP-Link XE-70 Pro: DECO Mesh) to use DHCP at static IP of 192.168.68.250. I set my pi to use static IP of 192.168.68.250 on eth0. I tried using a great amount of additional blacklist, doesn't seem to matter. Any help here would be appreciated.

Debug Token:

https://tricorder.pi-hole.net/F9B1xixq/

EDIT:

Found the main issue. I have IPv6 Enabled on my deco devices. When I disable IPv6, my ads are blocked. So, now I need to find out how to setup IPv6 on pihole.

2

Just wanted to add to my above information::
I had conflicting IP information on the pi. I removed a file that was giving it the IP 192.168.71.250/22. Below is the current information

pihole@raspberrypi:~ $ ip a | grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
inet 192.168.68.250/22 brd 192.168.71.255 scope global noprefixroute eth0
pihole@raspberrypi:~ $

Problem still persist

3

Below some hints:

DHCP is IPv4 only.
DHCPv6 exists but isn't supported on a bunch of OS'es like Android.
IPv6 RA (Router Advertisement) is the way to advertise IPv6 DNS IP's to your clients:

https://www.rfc-editor.org/rfc/rfc8106

If you install below on the Raspi, you can inspect what is advertised on your LAN and from which MAC address the RA is coming from:

Example outputs in that same thread.

The official docs have a "Router setup" section that also includes TP-Link: