redirect IPv6 DNS requests.

[jpgpi250]

I'm using pihole + unbound on a raspberry pi, this to achieve adblocking. I know pfblockerNG exists, but I'm using this for IP blocking only.
For IPv4, I've created a NAT rule that redirects all DNS requests, to the pihole. works perfect, all devices with hard coded DNS (mostly 8.8.8.8) are redirected to, and answerd by the pihole, whithout them even knowing this (wireshark shows the requests are replied by 8.8.8.8, but the answer is the one I've configured in pihole).

I've read (and tried) pfsense doesn't support NAT for IPv6, so the obvious question: How can I make pfsense redirect all IPv6 DNS requests to the pihole, apart of course for the requests coming from the pihole?