Not blocking ads. IPV6 issue

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Expected Behaviour:

Tests report successful. Ads blocked.

Actual Behaviour:

Test page (Block Ads! Adblock test) is saying nothing is blocked.
http://ipv6-test.com/ gets 19/20. DNS6 + IP4 Unreachable
I've tried reconfiguring with pihole -r but have the same issue still.
I'm using OpenWrt on my router with DHCP-Options pointing to pi-hole's reserved IPv4 address.

Debug Token:

9hinwsixnb