[address-policy-wg] WG: Question regarding RIPE-738 IPv6-Policy

Hello Gert,

thanks for clarification. The main sentence that confused me was this in Appendix A:
" It is an address allocation utilisation ratio and not an address assignment utilisation ratio."

What you now explain still defines a classical "assignment utilization rate" with a limted look up to a /56 granularity.
I assume the misinterpretation is the second part which does not require "full subnets", hence again the term "allocation".

So there are 3 parts to correctly calculate HD-ratios:
1. IP-Allocation from RIR to LIRs
2. Assignments for true use from LIR to endsites/users/devices - to be counted as /56 or /48 units (as shown as "used" in the LIR portal)
3. All networks below /56 that are assigned are not to be evaluated deeper about efficient usage.

Correct?

Best regards
On behalf
Kurt Kayser
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-----Ursprüngliche Nachricht-----
Von: Gert Doering <gert at space.net> 
Gesendet: Donnerstag, 23. Juli 2020 16:53
An: Kayser (Extern), Kurt <Kurt.Kayser at bmi.bund.de>
Cc: address-policy-wg at ripe.net
Betreff: Re: [address-policy-wg] WG: Question regarding RIPE-738 IPv6-Policy

Hi Kurt,

On Thu, Jul 23, 2020 at 02:40:38PM +0000, Kurt.Kayser at bmi.bund.de wrote:
> What is the correct way to calculcate the utilization?

Count /56s assigned.  /48s count as 256x /56.  Look up /56 count in the
HD ratio table.

The confusing sentence is supposed to convey "we care about efficiency
of usage inside the 'allocation' arena", so "/56 or /48 inside the /32
or larger".  We do not care about efficiency in the "assigned chunk",
so in the /56 we do not care if 1 address was used or 100.

(Which is different from IPv4, so it ended up in this - very old - text)

Less confusing now?  Or did I make it worse?

Gert Doering
        -- NetMaster
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have you enabled IPv6 on something today...?

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