Pekka,
>> [ ] go for a full multi-level regional distribution, down to
>> "one /32 per LIR per country" (as detailed by Michael Py)
> Pekka Savola wrote:
> This seems to have issues e.g. for multinational LIR's
I was hoping someone from the very large LIRs to comment on this.
> as well as when new countries are born and die.
> But maybe the issues could be worked out..
There is slack space in each zone for this very purpose; some issues
could not be worked out though. If China or India were to split into two
equal-size countries, we would have a problem.
However, short of this kind of radical change, the rest could be
handled. I have inventoried the following situations:
New country:
------------
Example: East Timor. What we have here is a smaller part of a larger
country that splits. Should something similar happen, the way to handle
it is very simple: The larger part keeps their block, we allocate a
block from the slack to the newly created country; pick a RIR to have
stewardship of the new country. It is obvious that renumbering will
occur in the newly created country although I will point out that the
kind of event that leads to this is a civil war and it is likely that
the new country will want to cut ties anyway. So if Kurdistan or
Cashmere were to become countries we would not have a problem.
Merge:
------
Example: Germany. Countries do not die, they become part of another
country or merge and yes this does happen. When it does, a choice will
have to be made between the following solutions:
a) A new block is allocated to the new country and the two old blocks
are returned to the free pool when everyone has renumbered.
b) The new country keeps the two existing blocks. The only issue doing
this is that instead of a single route to the new country there needs to
be two routes, which is not a big deal.
c) We were clever enough to put merge candidates consecutively so we
just have to extend the prefix.
IMHO, a) is not going to happen so we are looking at b) and possibly c).
Which means that as an enhancement we need to pair merge candidates. For
example, it would be a good idea to allocate space to North and South
Korea in an aggregatable fashion should they merge later (I picked this
example because it has similarities with Germany).
Michel.
