On September 1, 2007 Roque Gagliano wrote:
[...]
The rationale for the new value is:
- Today IANA allocates 2 x /8 as a normal allocation to every RIR
as that is what they are asking as a gentlemen agreement, so the last
allocation will have the same size as the actual allocations.
This is not quite the way I would describe it. The last couple of
allocations have been for just two /8s despite the RIR qualifying for
more. However, if the RIR had qualified for less than two /8s then
they would have received just one /8 as that is the minimum
allocation size.
Under the current policy an RIR needs to either have less than 50%
of /8 free or less than they will need for the next nine months,
based on the average rate of allocation over the previous six months.
To qualify for more than one /8 an RIR would need to demonstrate that
one /8 will not last nine months.
The policy text is fairly clear:
http://www.icann.org/general/allocation-IPv4-rirs.html
Regards,
Leo Vegoda