My ISP in Japan (NTT Flets) is even weirder. They have sort-of static IPv6 (due to MAP-E[1] require static prefix) and assigns customer a /64, but don't do Pref

My ISP in Japan (NTT Flets) is even weirder. They have sort-of static IPv6 (due to MAP-E[1] require static prefix) and assigns customer a /64, but don't do Prefix Delegation unless a customer also pay for a Fiber landline (Hikari Denwa) in which they will assign /56 and do proper PD. This has been a huge hindrance for anyone wanting to run their own home router their router must bridge IPv6 to ISP router (and thus not able to do their own firewall/DHCPv6/SLAAC) The only workaround is to use ndppd[1] set to proxy to the upstream router. However ndppd is undergoing a rewrite right now and latest stable release (0.2.5) has few bugs causing ndppd to stop working after a while. So far, the only way to get everything work for me was to build ndppd from master (which was deprecated in favor for a new 1.0, which is still in development). OpenWRT seems to include a working version of ndppd out of the box, but its MAP-E supports is somewhat broken. [1]: https://tools.ietf.org/html/draft-mdt-softwire-map-encapsulation-00 https://tools.ietf.org/html/draft-mdt-softwire-map-encapsula... [2]: https://github.com/DanielAdolfsson/ndppd https://github.com/DanielAdolfsson/ndppd