It might help if you built your IPv6 firewall rules to deal with networks, rather than individual IPs.[0] [0] Hell, with the horrorshow that is IPv6 "Privacy"

It might help if you built your IPv6 firewall rules to deal with networks, rather than individual IPs.[0] [0] Hell, with the horrorshow that is IPv6 "Privacy" addresses, it's all but impossible to recognise a particular host.