ARIN IP6 policy for those with legacy IP4 Space
dwhite at olp.net
Thu Apr 8 18:05:09 CDT 2010
On 08/04/10 18:00 +0000, bmanning at vacation.karoshi.com wrote:
>On Thu, Apr 08, 2010 at 12:50:26PM -0500, Dan White wrote:
>> On 08/04/10 17:17 +0000, bmanning at vacation.karoshi.com wrote:
>> > in the IPv4 space, it was common to have a min allocation size of
>> > a /20 ... or 4,096 addresses ... and yet this amnt of space was
>> > allocated to someone who only needed to address "3 servers"... say
>> > six total out of a pool of four thousand ninty six.
>> Granted, that may have been the case many years ago.
>> However, this was not our experience when we obtained addresses, and the
>> ARIN rules as I understand them would not allow such an allocation today.
> i picked a fairly recent example - the min allocation
> size has fluctuated over time. still it is not the case
> that most folks will get -exactly- what they need - they
> will - in nearly every case - get more address space than
> they need - due to the min allocation rules
We did, on our first allocation. We were well over 90% utilization and when
we asked our upstream ISP for more addresses, we were informed they would
not provide us a 17th /24. We scrambled to get our documentation together
for ARIN. We had to show efficient use of those 16 /24s, and we had to
document our immediate (12-24 month) need for addresses to get them.
>> > Thats a huge amnt of wasted space. If our wise and pragmatic leaders
>> > (drc, jc, et.al.) are correct, then IPv4 will be around for a very
>> > long time.
>> > What, if any, plan exists to improve the utilization density of the
>> > existant IPv4 pool?
>> I believe your question is based on an outdated assumption.
> and that outdated assumption is?
The assumption that ARIN allocations are based on anything other than 12-24
month need (with only a few exceptions).
If there are a significant number of sparse allocations of IPv4 blocks in
ARIN, then that's a good indication that allocation rules need to be
More information about the NANOG