Subject: Re: [Anima] I-D Action: draft-behringer-anima-autonomic-control-plane-00.txt

From: Brian E Carpenter <[email-masked]>
Date: Tue, 04 Nov 2014 10:36:38 +1300

Hi,

This draft seems fairly clear to me, though I assume it will
evolve as other aspects of anima become clear. The proposal
to use a ULA prefix (section 3.7) seems good, since it
decouples the ACP from all external addressing considerations
and will work from a pure factory-reset condition. However,
it does raise a question (which also came up in homenet
recently). What happens if the network partitions? The ACP
will automatically partition too, but it will presumably keep
the same /48 ULA prefix everywhere. Does the partitioned network
retain the same domain ID in both parts? What happends in the
part that doesn't include the trust anchor? What happens if the
network recombines - will there be a risk of clashing subnets
created during the partition?

Also what happens if two previously unrelated networks combine?

   Brian