[OpenWrt Wiki] IPv6
https://openwrt.org/docs/guide-user/network/ipv627.11.2021 · How to use OpenWrt behind a Freebox with IPv6 delegation. IPv6 configuration. IPv6 extras. IPv6 multicast. IPv6 on L2TP softwire. IPv6 with Hurricane Electric. IPv6 with Hurricane Electric using LuCI. NAT6 and IPv6 masquerading. WIDE-DHCPv6 client configuration.