[arin-ppml] Draft Policy 2010-1: Waiting List for Unmet IPv4 Requests

michael.dillon at bt.com michael.dillon at bt.com
Thu Jan 28 03:30:51 EST 2010

> What if the request is for a /14, and the biggest free blocks 
> are all /24s?  Do you want to give out 1024 non-aggregatable 
> /24s to meet their need for a /14? 

If the applicant has justified a /14's worth of space, and ARIN
asks the applicant about 1024 /24s and the applicant says that
they can indeed make use of them, then basically, yes.

When the shelves are bare, you either accept crumbs, or go to
the new IPv6 supermarket.

> Or should they be offered 
> a single /24 from the free pool, and given the option to get 
> their /14 via transfer? 

Definitely not. The option to get a /14 via transfer is 
something that needs to be raised before an applicant submits
their application. ARIN needs to be clear about what blocks of
what sizes, are on the shelf waiting.

> The latter is the outcome this 
> policy would prefer, as it reduces fragmentation of the
> IPv4 address space, and allows available blocks to be matched 
> with a larger number of equivalent-sized requests, rather 
> than having them all vacuumed up by a small number of large requests.

If that was the goal then a simple change to policy that
states ARIN will only issue a single block which is the
largest aggregate that fits within the applicant's approved
size. That works today, and right up to the end.

> And what about when the last /24 is given out, but there are 
> still requests coming in, and there is still small amounts of 
> address space being reclaimed?  Do you think that all 
> requests should be denied if the pool is empty, and the first 
> request to come in after a block is reclaimed gets it?

Yes. ARIN is not an auction house or a second hand shop. The 
transfer policy exists so that people can find those reclaimable
blocks without bogging down ARIN with the details.

>  In that case, perhaps every requester 
> could send in requests once a minute, all day every day, 
> until a block becomes available.

Then ARIN can censure the requester and block their IP
addresses from ARIN services. Meantime their competitors
will be advertising to buy reclaimable blocks and win
the day.

--Michael Dillon

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