[arin-discuss] IPv6 as justification for IPv4?

[Dmitry Kohmanyuk]

On Apr 18, 2013, at 6:45 PM, "Byrne, Cameron" <Cameron.Byrne at T-Mobile.com> wrote:

>> -----Original Message-----
>> From: arin-discuss-bounces at arin.net [mailto:arin-discuss-bounces at arin.net]
>> On Behalf Of Jesse D. Geddis
>> Sent: Wednesday, April 17, 2013 5:04 PM
>> To: Randy Carpenter
>> Cc: arin-discuss at arin.net List; John Curran
>> Subject: Re: [arin-discuss] IPv6 as justification for IPv4?
>> 
>> Randy,
>> 
>> 	I'm shooting for simple and equitable. The only two ways I can see to
>> accomplish this is via a flat fee or by using an exponential linear model.
>> 
> [Byrne, Cameron] 
> 
> Sorry, math newbie here.
> 
> What is an "exponential linear model" ?
> 
> I am familiar with exponential.
> 
> I am familiar with linear.
> 
> But, I don't know what is implied by "exponential linear"
> 
> To me, it sounds like there is red, there is black, and you are suggesting RedBlack 

I think we can describe and name those pricing models by function of total IP addresses allocated.

So, "fee per address" would be _linear_ (cost = X * addresses);  
"fee per bit of block size"  would be _logarithmical_ (this includes current scheme: cost = K * log2(addresses) + N)
and fixed fee regardless of size of allocation (a-la RIPE model) is _flat_ fee (cost = N).

I am not doing advocacy of specific cost model (now or in the future) - but a formula is very useful to illustrate them.
 
-- dk@