[ppml] Use of HD ratios (esp. 0.94)

[Geoff Huston]

Geoff Huston wrote:
> Brian,
> 
> 
> [...]
> 
>> However, at review time, both have a threshold of 36.9% utilization.
>> The presumption is that ISP A's assignments are 100% utilized.
> 
> 
> The intent of the use of /56 in the efficiency metric was to provide a 
> common mechanism to measure the efficiency of end-site prefix 
> assignments irrespective of the size of individual end site assignments, 
> and explicitly not to measure the efficiency of address assignments to 
> hosts.
> 
> i.e the presumption in terms of this end site prefix efficiency measure 
> is that the assignments with end-sites are not the subject of the review.

s/with/within/

apologies for my poor brain / hand coordination!

   Geoff