[ppml] Policy Proposal: IPv4 Soft Landing

[Iljitsch van Beijnum]

On 11-mei-2007, at 10:14, Member Services wrote:

> 30 days after specified thresholds in the amount of address space
> remaining in the IANA IPv4 free pool are crossed, the requirements
> necessary for ISPs to obtain additional IPv4 address space are made
> more stringent

The effect of a policy like this is that:

a. IPv4 becomes more painful to use because addresses are harder to get
b. the incentive to move to IPv6 is reduced because the moment that the
    IPv4 is completely depleted is postponed
c. in many cases, the same amount of address space as before is given  
out,
    but now as many small blocks, increasing the ARIN workload and  
hindering
    route aggregation

As such, a policy like this doesn't seem to be in the best interest  
of the internet community at large.

> Phase	     1
> Threshold    40 /8s

This will almost certainly happen within a year, with about 25% of  
the IPv4 address space or around a billion addresses still unused.  
Don't forget that in addition to what's available in the IANA global  
pool, there is also a lot of address space still available but held  
by the RIRs. Currently, about 24 /8s worth.