On 4/29/13 1:03 AM, "Jérôme Nicolle" <jerome@ceriz.fr> wrote:
Le 24/04/2013 07:46, Tore Anderson a écrit :
Trying to reclaim and redistribute unused space would be a tremendous waste of effort.
It is necessary to keep an acceptable churn and still allocate small blocks to newcomers, merely to deploy CGNs.
Not doing so would end up in courts for entry barrier enforced by a monopoly (the RIRs).
There is a /10 reserved to facilitate IPv6 deployment: https://www.arin.net/policy/nrpm.html#four10 "Reclamation" is facilitated by offering a financial benefit, i.e., selling underused addresses.
Therefore it is inevitable to reclaim unused address space as long as there's a demand for IPv4, wich will still be strong as long as major players refuse to do their jobs.
Moreover, I think it's necessary for all responsible LIR and RIRs to take a stand and vote policies to reclaim address space from networks who are still not deploying IPv6 as those obviously don't want to be a part of the Internet anymore.
I encourage you to propose such a policy: https://www.arin.net/participate/how_to_participate.html Please make sure the proposal includes clear metrics for when to reclaim, so ARIN staff isn't forced to rely on what may be inconsistent judgement calls. Lee