[ppml] Policy Proposal: Global Policy for the Allocation of the Remaining IPv4 Address Space

[Leo Vegoda]

On 25 Jul 2007, at 10:32pm, Brian Dickson wrote:

[...]

>> Do you want to change the unit size or the maximum amount of space
>> that can be allocated? The current global policy allows the RIRs to
>> receive all the space they need and changing the way it is measured
>> from /8s to /10s doesn't change anything other than add extra  
>> lines to
>> the IPv4 registry.
> Unit size.
> Clearly this method won't support maximum space allocations that  
> exceed
> available space - but no method can.
>
> Maximum space would likely be a function of number of blocks left at
> current unit size, and/or some kind of "oversubscription" rules that
> relate to how many additional blocks (of decreasing size) get assigned
> to satisfy requests for blocks. The sequence of block sizes would be
> strictly deterministic. 18 /10's, 18 /12's, 18 /14's, 18 /16's, etc.,
> until the plug is pulled via the last 6 blocks being
> assigned without subdivision.
>
> If collectively the RIRs are about to hit the exhaustion of IPv4 space
> "wall", then the presumption is more frequent and smaller allocations
> make it possible to continue to serve up *something*, rather than  
> having
> no more space.

Would you suggest limiting ISPs to some percentage of the amount they  
requested, or would the RIR be free to return to the IANA for an  
additional block straight away, allowing them to fulfil the request  
in a piecemeal fashion?

Regards,

Leo