I’ve got an OpenWRT router, and I’ve configured it to send to DHCP clients the ip of the pihole for DNS servers. I did that by following the guide on https://forum.openwrt.org/t/pihole-dns-configurat-with-openwrt/33477/2, which I did with:
network > interfaces > lan > dhcp server > advanced settings > dhcp-options Type 6,address of pihole
That works, except for ipv6. It seems my router is giving me an ipv6 nameserver, which is the router itself:
nameserver 192.168.1.241 nameserver fd34:85d2:7e25::1
The first one is my pihole, but the second is my openwrt! How do I fix that?