I am running pihole on Docker. This is my docker compose file: Pihole Docker Compose configuration · GitHub
My router is a TP-LINK Archer vr2600v that is connected over WAN with the modem providing the actual internet connection (cable modem).
When I disable the integerated DHCP server in my router and configure the DHCP relay option (network mode "Docker Pi-hole with a bridge network") and set the ip address to the pihole ip address (and disable NAT in the wan interface), all the devices get ip addresses from pihole via DHCP but can only resolve local domains, nothing from the internet.
Debug Token
https://tricorder.pi-hole.net/3loxsf65i9