Techs IIJ is not using, and plan to use

Obstacles: vendors support, RFC delays

Multicast by IPv6 PIM
Waiting for vendor routers support, as we need all routers to speak PIM
OSPFv3, eventually
Again, waiting for vendors to ship/stabilize it
IPsec for protecting routing protocols
No vendor support at all at this point
Details are lacking in RFC - "use IPsec" is too vague