>>> which avoids renumbering.
> Why do we care? Homenets need to be renumbering-proof anyway, because
> the ISP might change the prefix anytime.
You're right, that deserves clarifying. We're trying really hard to make
sure that in no circumstances is running a Homenet router worse than
running an ordinary NAT/DHCPv6-PD router. Consider the following trivial
topology:
ISP ---- Homenet router ---- stub link
We'd like to ensure that:
- the NATed IPv4 prefix assigned to the stub link remains stable;
- if the /56 delegated by the ISP is stable, then the global /64
assigned to the stub link remains stable;
- if the Homenet router is announcing a ULA, then the ULA /64 assigned
- to the stub link remains stable.
In short, we'd like any prefix assignments performed by the Homenet router
to survive a reboot, even in the absence of either explicit configuration
or stable storage.
-- Juliusz
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