Hello,
I have a home network with 2 IPv6 subnet (/64 each). Pi-hole is on one subnet (aaaa:bbbb:cc00::/64). I have some equipment on the second subnet (aaaa:bbbb:cc:07::/64). Equipment on both networks can communicate: I can ping between different network and connect as SSH.
Equipment on both networks have the pi-hole address given as their DNS server (IPv6)
Expected Behaviour:
All equipment should be able to resolve DNS queries.
Actual Behaviour:
Only equipment on the same subnet as pi-hole get replies. On the other subnet, no answer is received.
When debugging with tcpdump, I can clearly see the query packets arriving on the pi-hole ethernet interface. But they are ignored by pi-hole: no answer nor traces in the logs.
Is there an option which prevent pi-hole to answer queries from a different IPv6 subnet?
Thank you.