That's really helpful, thank you; I'll give that a try the next time I'm attempting to make this work.

(I'm doing this using direct netlink calls from my init; this is all about booting as fast as possible. The IPv6 address information is coming from instance metadata.)

▲

Dagger2 5 days ago | parent [-]

You probably want to add the "optimistic" or "nodad" flags when adding the address, or you'll need to wait for DAD to finish.

	▲	JoshTriplett 5 days ago \| parent [-]
		I'd figured that specific detail out already, though it was hard-won knowledge. But there's a lot more where that came from before getting to the point of bringing up IPv6 and sending packets without dealing with slow RA and various other slow processes of waiting for data from the network, for instance.