[sig-policy] Soliciting comments - IPv4 shared use address space

[Toshiyuki Hosaka <hosaka@nic.ad.jp>]

[chair hat off]

Dear colleagues,

I have translated the policy proposal idea (this is NOT a formal policy
proposal to APNIC at this stage) as below, in order to seek your
comments and feedback on this.

This proposal was submitted to JPNIC open policy meeting this year, and
I planned to introduce this idea at the last APNIC meeting but I
couldn't because we have no time for informational presentations.

This proposal is to designate two (2) /8s global address as "shared use"
among APNIC LIRs for their internal use. If you are interested in,
please read through and send your comments which the authors would
highly appreciate.

Thanks and best regards,
toshi
---
Toshiyuki Hosaka
JPNIC

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Title of proposal : Proposal to create IPv4 shared use address space
                    among LIRs

Author : Shirou Niinobe <nin@syce.net>

Co-authors : Takeshi TOMOCHIKA
             Jiro YAMAGUCHI
             Dai NISHINO
             Hiroyuki ASHIDA
             Akira NAKAGAWA
             Toshiyuki HOSAKA

Version : 1
Date : 7 August 2007


1.  Introduction
----------------

This proposal is to create IPv4 shared use address space among LIRs
in AP region, for the effective use of the IPv4 address space.


2.  Summary of current problem
------------------------------

There is a case that a LIR gave up providing firewall or IP
connectivity service behind NAT using RFC1918 address space for the
security and the effecitive use of IPv4 addresses, because of the
potential (possible) address space collision with the same RFC1918
addresses in an end-user's networks.

Some LIRs apply (and receive) global IPv4 address allocation for
the purpose of providing such a service. If we have this proposed
shared address they do not have to apply global IPv4 addresses in
such a case, and we can achieve effecitive use of IPv4 address.


3.   Situation in other RIRs
----------------------------

There is no address space for this purpose (other than RFC1918 space).
However the Internet Draft (Redesignation of 240/4 from "Future Use" to
 "Limited Use for Large Private Internets" draft-wilson-class-e-00.txt
has been submitted on August 3, 2007.


4.   Details of the proposal
----------------------------

1) Create IPv4 shared use address space among LIRs in AP region.

2) The amount of the address space for this purpose is two (2) /8s.

3) LIRs in AP region can use its address space without any registration
   or application procedure to APNIC/NIRs, therefore global/regional
   address uniqueness is not guaranteed.

4) End-users cannot use this proposed address space, and should use
   existing RFC1918 address. Though LIRs can assign this proposed
   address to its customers.


5.   Advantages and disadvantages of the proposal
-------------------------------------------------

[Advantages]:

- Effective use of global IPv4 address space will be promoted, as the
  largest LIRs will use this proposed address space rather than global
  addresses.

- "Unnecessary (replaceable addresses to this proposed space)" IPv4
   global address allocation/second opinion request can be diminished,
   therefore APNIC/NIR's wordload will be reduced.

- IP connectivity service behind firewall or NAT can be provided easily
  by using this proposed address.

- No need to apply global IPv4 addresses to APNIC/NIR.

- LIRs can save APNIC/NIR membership fee (calculated based on the
  amount of address space allocated).

- End-users can connect to the internet without any apllication of
  the global IPv4 addresses.

- End-users can buy a service with different level of security provided
  using the global IPv4 address network.

- LIRs still can provide IPv4 connectivity by using this proposed
  address space, even after the IPv4 address exhaustion.

- Currently we do not have high-throughput IPv6-IPv4 translater for
  commercial use, and even if it is not available until the IPv4
  address exhaustion LIRs still can provide IPv4 connectivity by dual-
  stucking with this proposed address space.

- For those who cannot replace their equipment to IPv6-ready, especially
  in the LDC in Asia region, can provide IP connectivity by using this
  proposed address space.


[Disadvantages]:

- Global IPv4 addresses to be allocated to LIRs diminishes by Two (2)
  /8s.

- LIRs needs to configure firewalls or NATs to use this proposed
  address space. Therefore global IPv4 addresses for these equipments
  are still needed for their external connectivity.


6.   Effect on APNIC members
----------------------------
APNIC members will be able to use this proposed address space in
accordance with their necessity.


7.   Effect on NIRs
-------------------
NIRs are expected to adopt the same policy at their discretion.

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