Nick, On 25/07/2009 2:57, "Nick Hilliard" <nick@inex.ie> wrote: [...]
Turning this around, if the minimum PI assignment size were increased from /32 to /24, there would have been 23k extra PI addresses out of 5493760 total PI addresses assigned between 2005-01-01 and 2009-05. That's about 0.4%.
I wonder if you are right. Right now, the policies for PA and PI are the same: if you qualify for a /28 of PA then you qualify for a /28 of PI. But if you change the policy so that when you qualify for a /28 of PA then you qualify for a /24 of PI then PI space becomes much more attractive because you get more space and it is independent of your ISP. Any time an ISP had a customer who wants more space than they qualify for under the PA policy they have an opportunity to upsell them a /24 of PI. I suspect that a policy along these lines could end up as a cash generator for ISPs. I don't know how to quantify this and maybe I'm wrong anyway. Nonetheless, I think this should be considered as a potential risk for a policy that allows /24 PI assignments based solely on a phrase as vague as "when routing is a major issue". Regards, Leo Vegoda