I intend to use STC as default IPv6 default router for a "router lifetime" period of time. I succeeded in creating a raw "Router Advertisement" streamblock and default route is valid in the remote host. The issue I am facing with, when answering to ICMPv6 Neighbor Solicitation from the host, STC does not set "Router flag" in the Neighbor Advertisement. And then the default route disappears in the host routing table even before router lifetime expires.
... My question : how to force the STC to set the router flag in the NA message ?