@Rickety_Jim Following up on my own post because I've found three threads that suggest what I should do https://www.reddit.com/r/pihole/comments/180kal1/use_pihole_as_dns_over_openvpn/...

I am trying to take advantage of the Deco X60 v4's VPN server functionality but would like to use my own DNS on the VPN connection. I am currently running a pihole on my network at 192.168.1.76....