I have always wondered: Why would you want to also specify the link-local address of the next hop in an IPv6 static route if you are already specifying the outgoing interface, which is sufficient by itself?
what doesn't work? specifying only the outgoing interface? but it does. It's supposed to. You don't need to specify the link local address of the next hop necessarily.
I'm trying to verify that right now but apparently it indicates the length of time this route has been known to the router not the last time an update was received for this route.