[arin-ppml] Final draft of 2010-13 for Atlanta (Rev 1.55)
Owen DeLong
owen at delong.com
Thu Sep 23 19:26:05 EDT 2010
Changes:
1. Set maximum reservation period to 24 months. This avoids creating
a 4-year reservation by CIDR-rounding 36 month reservations.
2. Reduced minimum size for 4.10.4(b) to /28
These changes will make the policy more balanced and reduce the extent to
which larger organizations could be disadvantaged relative to smaller
smaller organizations if reservations have to be resized.
The change to a 2-year system resolves an issue with the CIDR-Rounding
where a 36-month reservation is mathematically guaranteed to become a
48-month reservation. The other alternative was to round-down instead of
up which would have mathematically converted all reservations to 2 years.
As such, a 2-year reservation system seemed the cleanest and most
straightforward approach.
Owen
Draft Policy 2010-13: Permitted Uses of Space Reserved under NRPM 4.10
Proposal Originator: Owen DeLong, Chris Grundemann
Proposal Version: 1.55
Date: 23 September 2010
Proposal type: modify
Policy term: permanent
Policy statement:
Remove section 4.1.8 (Unmet requests) from the NRPM.
Replace the text of section 4.10 in its entirety (including the name) with:
4.10 IPv4 Transition Pool Post IANA Regular Pool Depletion
When ARIN receives its /8 IPv4 allocation from IANA under the
global policy titled "Global Policy for the Allocation of the
Remaining IPv4 Address Space" ratified by ICANN Board
on 6 March, 2009, that /8 will form a dedicated pool to
facilitate IPv6 Deployment.
Addresses returned to ARIN and not subject to a regional or
global transfer policy will be reserved for utilization in the transition
pool.
Allocations and assignments from this block must be justified by
IPv6 transition requirements.
ARIN will use their discretion in determining whether a particular
application meets the spirit of this policy.
4.10.1 Addressing Plan
Any organization wishing to receive IPv4 addresses through this
policy must submit a detailed addressing plan for any request
that is made containing the following:
(a) Their addressing needs over the entire reservation period and
(b) Methods of meeting all requirements (requirements are
explained in section 4.10.4.) over the entire reservation
period.
4.10.2 Reservation System
Initially, all space assigned or allocated under this policy will be
reserved in advance for a maximum period of 24 months, requests for
shorter reservations will be accepted. The total reservation size
will be rounded up to a CIDR bit boundary.
Each organization's reservation amount will be divided
into quarterly allotments. Allotments will be rounded up
to a CIDR bit boundary. The final quarterly allotment will
contain only the remaining space from the full reservation.
An organization may request one reservation under each provision
listed in section 4.10.4. Once a reservation has been satisfied,
another may be requested.
4.10.2.1 Reservation Requests Prior to Initial ARIN Free Pool Depletion
Reservations will be accepted from the time that this policy
is adopted until the day that ARIN can no longer fill regular requests from
space allocated to ARIN by IANA. At that time, if necessary, all reservations
will be reduced by an equal amount to allow them to fit within
the total space available in the transition pool. No reservation
will be reduced lower than the minimum quarterly allotment for
it's category. Each organization may decide whether to adjust
the reservation period or the allotment size (within the stated
range) when reservations are reduced. Organizations must make
this decision within 30 days of announcement and may not alter
their choice once made. Any space added to the transition
pool during this time will cause a final recalculation of
reservation sizes. Once all necessary adjustments are
made, all reservations are guaranteed and the first quarterly
allotment is issued to each org.
4.10.2.2 Reservation Requests Post ARIN Free Pool Depletion
Reservation requests received after ARIN free pool depletion
as defined in 4.10.2.1 will not be guaranteed. If approved, such
requests will be placed in a queue. As space becomes available in
the transition pool it will be used to provide allotments to
organizations with reservations in the queue on a first-approved
first-served basis. Partially filled allotments will remain at the
front of the queue.
4.10.2.3 Abandonment of Reservation
Any organization may abandon their remaining reservation at any
time by informing ARIN of their desire to do so. Upon abandonment,
the remaining space in the reservation will be returned to the
transition pool.
4.10.3 Quarterly Requirements
Organizations with approved reservations and address plans
are entitled to quarterly allotments. In order to receive each
additional allotment, an organization must submit evidence of
compliance with the following sub-sections:
(a) The most recent 4.10 allotment is at least 80% utilized.
(b) All prior 4.10 allotments within the same 4.10.4
category are at least 90% utilized.
(c) All utilization is permitted under the 4.10.4 category for
which it was initially requested.
For purposes of this computation, space received under each
provision shall be considered separately if an organization has
received resources through multiple provisions.
If an organization does not meet all obligations in any given
quarter, that organization shall not receive that quarter's allotment
and shall have their reservation reduced by one quarterly allotment.
If an organization does not meet all obligations
for three consecutive quarters, that organization forfeits the remainder
of their reserved block.
Utilization requirements (a) may be delayed at ARIN's discretion.
If an organization is using space received under 4.10 in a manner
contrary to 4.10, that organization forfeits their remaining
reservation and may have their entire allocation or assignment
revoked.
All 4.10. space forfeited, revoked or otherwise reclaimed shall
be returned to the ARIN transition pool.
4.10.4 Specific types of transitional uses have specific requirements:
(a) An ISP/LIR may request a block no smaller than a /25 nor
larger than a /18 per quarter to be used to provide single
IPv4 /32s to their customers which could justify a /28 or
more of IPv4 under ARIN policies in effect at the time of
IANA depletion.
1. No customer site may receive more than a single
IPv4 /32 per 1,000 Internet connected hosts upto 8 /32s.
2. The customer site must not have any IPv4
addresses not issued under this policy.
3. The customer site must use the /32 to provide
IPv4 connectivity for hosts which have IPv6
addresses with IPv6 connectivity to the ISP/LIR.
4. The ISP/LIR must demonstrate that it already
provides IPv6 addressing and connectivity to at
least one additional existing customer site for
each /32 requested, up to 90% of all customer sites
served (across all customers).
5. An ISP/LIR customer which is not large enough to qualify
under this provision and has no unassigned IPv4 addresses
may receive an appropriate number of /32s from their
upstream provider for reassignment to their customers
under the terms of 4.10.4(a).
6. A customer site which terminates multiple connections
from the same provider on separate routers may qualify
for one /32 per unique router with a direct connection to
the provider, up to a total of 8 /32s.
7. The total space issued to all organizations under
this provision shall not exceed an aggregate /9
or equivalent per /8 placed into the transition pool.
(b) An ISP/LIR or End user organization may request a block
no smaller than a /28 and no larger than a /18 per quarter
to provide single IPv4 /32s to each physical server used
to provide Internet reachable content.
1. Space issued under this provision is an assignment,
not an allocation. An LIR may not distribute this
space to their customers.
2. No server may receive more than a single IPv4 /32
under this provision.
3. The server must have IPv6 addresses with IPv6
connectivity (must be dual-stacked).
4. The receiving organization must demonstrate that it
already provides IPv6 addressing and connectivity
to at least one additional existing server
(organizations which can show 100% dual stack are
exempt from this requirement).
5. The receiving organization must IPv6 enable all of
their content on the following schedule:
+ 25% of content IPv6 reachable within six
months of receiving their first addresses
under this policy
+ 50% of content IPv6 reachable within one year
of receiving their first addresses under this
policy
+ 75% of content IPv6 reachable within 18 months
of receiving their first addresses under this
policy
+ 90% of content IPv6 reachable within 24 months
of receiving their first addresses under this
policy
6. A network providing SSL terminations for applications
or content acceleration may receive a /32 for each
distinguished name by following all requirements in
this provision, substituting "distinguished name" for
"server."
7. Networks using these addresses for authoritative
DNS servers can use 2 /32s per 1,000 authoritative
domains served up to 128 /32s total per organization.
8. The total space issued to all organizations under
this provision shall not exceed an aggregate /9
or equivalent per /8 placed into the transition pool.
(c) An ISP/LIR or End user organization may request a block no
smaller than a /29 and no larger than a /25 per quarter for
purposes relevant to their ability to deploy IPv6.
1. Space issued under this provision is an assignment,
not an allocation. An LIR may not distribute this
space to their customers.
2. Space issued under this provision must be used to
provide the required public IPv4 address(es) for
transitional technologies operated by the recipient
organization.
Specific examples of permitted uses are:
a. Large scale or "Carrier Grade" NAT
b. NAT-PT
c. DS-LITE/B4/AFTeR
d. IVI
e. DNS64 or other transitional DNS enablers
f. Other technologies of similar purpose
and scope.
3. A /10 from the final /8 shall be reserved for issuance
under this provision. In no case shall any addresses
from this /10 be issued for any purpose outside
of 4.10.4(c).
(d) Applications which would qualify for IPv4 under section 4.4 of
the NRPM (critical infrastructure) may qualify for IPv4 space
under this policy if they meet the following criteria:
1. The critical infrastructure to be numbered must also
have IPv6 addresses and must provide all services
provided on IPv4 over IPv6 on the same time table.
2. Assignments under this provision shall be the
smallest technically feasible size for the critical
infrastructure in question.
3. The total space assigned under this provision shall not
exceed the equivalent of a /14.
</pre>
<pre>
Rationale:
The current terminology in section 4.10 is vague and could allow a variety of interpretations which could lead to allocations or assignments being made to ISPs intending to misuse the space for general deployment by using IPv6 overlay technologies as a "IPv6 deployments" requiring IPv4 space for transition. For example, the current policy could be interpreted to enable an ISP to require IPv4 addresses for all IPv6 customers to roll IPv6 out as 6rd to customers who would be otherwise unable to get IPv4 space. This is clearly outside of the original intent of the proposal which created 4.10 (6rd was not yet envisioned at the time that was written). This proposal seeks to clarify that intent and tighten up the requirements for organizations seeking to get space from this limited final resource so that it truly is available to facilitate transitional technologies.
Additionally, there are a number of community segments that are not well served by the original intent of 4.10 and several community members requested a mechanism for providing a certain amount of certainty with regards to obtaining space at the end. While it would be impossible to guarantee organizations all the space they need as runout is upon us, this policy seeks to provide a way for organizations to sign up for and receive a reservation from the final space proportionate to their need. The policy also includes guidelines intended to ensure that this vital community resource is given only to organizations working towards a smooth transition to IPv6 to the benefit of the full community.
In order to meet these needs, this policy has become very complex. It is an unfortunate artifact of the complex issue it seeks to address. A great deal of effort has been made to simplify the policy as much as possible, and, special thinks go out to several members of the community for their assistance in this matter.
One provision in this draft policy calls for utilization criteria which may be waived by ARIN staff discretion. The intent of this clause is to allow staff to avoid penalizing an organization for successful address conservation efforts.
Runout is upon us. IANA will run out of the IANA free pool and issue the last /8 this policy seeks to regulate before the next ARIN public policy meeting. If we are to make any attempt at fair distribution for the sake of IPv6 deployment, this is our final opportunity to do so outside of an emergency action by the ARIN board.
Timetable for implementation: immediate
For reference, here is the current text of 4.10
4.10 Dedicated IPv4 block to facilitate IPv6 Deployment
When ARIN receives its last /8 IPv4 allocation from IANA, a contiguous /10 IPv4 block will be set aside and dedicated to facilitate IPv6 deployment. Allocations and assignments from this block must be justified by immediate IPv6 deployment requirements. Examples of such needs include: IPv4 addresses for key dual stack DNS servers, and NAT-PT or NAT464 translators. ARIN staff will use their discretion when evaluating justifications.
This block will be subject to a minimum size allocation of /28 and a maximum size allocation of /24. ARIN should use sparse allocation when possible within that /10 block.
In order to receive an allocation or assignment under this policy:
1. the applicant may not have received resources under this policy in the preceding six months;
2. previous allocations/assignments under this policy must continue to meet the justification requirements of this policy;
3. previous allocations/assignments under this policy must meet the utilization requirements of end user assignments;
4. the applicant must demonstrate that no other allocations or assignments will meet this need;
5. on subsequent allocation under this policy, ARIN staff may require applicants to renumber out of previously allocated / assigned space under this policy in order to minimize non-contiguous allocations.
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