Add an option to run DHCPv6 server on WAN interface when IPv6 address prefix is not delegated from ISP.
Take the ::/64 prefix from the address assigned by DHCPv6 client and use it as base for stateful address assignments for clients DHCPv6 requests coming from the LAN interface (make sure the client DHCPv6 requests are relayed to the WAN interface).
Add an option to run DHCPv6 server on WAN interface when IPv6 address prefix is not delegated from ISP. Take the ::/64 prefix from the address assigned by DHCPv6 client and use it as base for stateful address assignments for clients DHCPv6 requests coming from the LAN interface (make sure the client DHCPv6 requests are relayed to the WAN interface).