Forward all IPv6 Traffic and Block all IPv4 Traffic

Hi everyone!

I want to create an OpenWRT instance which is just forwarding all incoming IPv6 Traffic from the WAN port to the LAN Port and blocks all IPv4 Traffic. I dont need DNS or DHCP.
My goal is that devices on the LAN side only get IPv6 adresses from the main router on the WAN side and no IPv4.

Is this possible?

Greetings Carl

You can add a rule to allow from wan to lan for ipv6 family.

That is blocked by default.

You can disable them if you don't need them.

How will they get the addresses from main router? Prefix delegation and SLAAC?

Remove v4 address from router LAN interface.