[address-policy-wg] Policy proposal: #beta: IPv4-HD-Ratio

> which has the key sentence
> "The proposed value of the HD ratio for IPv4 is 0.96"
> 
> > Note that the current HD ratio for all IPv4 address space that isn't 
> > reserved by IANA is 90.45%.
> 
> As you see the HD Ratio propsed is much higher but
> would help LIR's with bigger allocations to justify
> their IP usage.

You are comparing apples and oranges. Or maybe you have painted
all your apples with orange paint.

The proposal suggests that the HD ratio should be 0.96
It does not mention a percentage. In fact, a percentage
is a kind of ratio but it is not the same kind of ratio
as the HD ratio.

The comment regarding all IP address space that is not
reserved by IANA is not clear whether it is talking about
an HD ratio or an allocation percentage. And the most important
thing is that it does not say what is the source of the
numbers that lead to the 90.45 result.

HD ratio for IPv4 is intended to count the number of addresses
assigned by an LIR and compare that to the number of addresses
that RIPE (or another RIR) has allocated to the LIR. When discussing
"all IPv4 address space" or "IANA reserved address space" we are
talking about address attributes that are not covered by the
HD ratio as we know it.

--Michael Dillon