Support 



On Sep 16, 2014, at 21:45, "Elvis Velea" <elvis@velea.eu> wrote:

Hi,

you have my support.

This proposal has been already made and approved/implemented (May2012) in the RIPE Region and as far as I can see, it was a good proposal and it has not caused any problems.

The /29s are reserved anyway, why not allow the LIRs to use them if they need a larger/additional block?
From my experience, some LIRs may need more than just the /32 used for their main/primary network in order to test in a separate network a transitioning protocol or equipment. For this reason only I think that keeping the /29 reserved and not allocated is a waste.

Offcourse, the /29 allocation should be made upon request of the LIR. If the LIR needs it, he can just request it but not have to send any kind of justification (other than - I need/want the extension of the allocation from /32 to /29)

my 2 cents,
elvis

On 17/09/14 10:26, Masato Yamanishi wrote:
Dear SIG members

A new version of the proposal “prop-111: Request-based expansion of IPv6
default allocation size has been sent to the Policy SIG for review.

There are changes to section 4. Proposed policy solution only.

Information about earlier versions is available from:

    http://www.apnic.net/policy/proposals/prop-111

You are encouraged to express your views on the proposal:

 - Do you support or oppose the proposal? 
 - Is there anything in the proposal that is not clear? 
 - What change could be made to this proposal to make it more effective?

Please find the text of the proposal below.

Kind Regards,

Andy and Masato



----------------------------------------------------------------------
prop-111-v004 Request-based expansion of IPv6 default allocation size
----------------------------------------------------------------------

Author: Tomohiro Fujisaki
fujisaki@syce.net


1. Problem statement
--------------------

IPv6 minimum allocation size to LIRs is defined as /32 in the "IPv6
address allocation and assignment policy"[1]. It's better to
expand this minimum allocation size up to /29 (/32 - /29) since:

- Before sparse allocation mechanism implemented in late 2006, /29
was reserved for all /32 allocations by sequential allocation
method made from those old /23 blocks. These reserved blocks
might be kept unused in the future.

- Sparse allocation mechanism was implemented in late 2006 with a
/12 allocation from the IANA. Under the sparse allocation
mechanism, there is no reservation size defined, and the space
between allocations continues to change, depending on the
remaining free pool available in APNIC.

However, the "APNIC guidelines for IPv6 allocation and
assignment requests"[2] stated:

"In accordance with APNIC's "IPv6 address allocation and
assignment policy", where possible, subsequent delegations to the
same resource holder are made from an adjacent address block by
growing the delegation into the free space remaining, unless
disaggregated ranges are requested for multiple discrete
networks."

So, it is expected that allocation up to /29 is guaranteed for
consistency with allocations above. Based on the current
situation, contiguous allocation of /29 can still be accommodated
even under the sparse allocation mechanism (Current /32
allocations from the /12 block can grow up to /24 at this stage).

- After amended HD Ratio (0.94) and base calculation size (/56) was
introduced (prop-031 and prop-033), to obtain address blocks larger
than /32 and to request additional address blocks became harder
especially for small and middle size ISPs.

- For traffic control purpose, some LIRs announce address blocks
longer than /32 (e.g. /35). However, some ISPs may set filters to
block address size longer than /32 since some filtering
guidelines recommend to filter longer prefix than /32([3][4]). If
LIRs have multiple /32, they can announce these blocks and its
reachability will be better than longer prefix.

- If an LIR needs address blocks larger than /32, LIRs may tend to
announce as a single prefix if a /29 is allocated initially at
once. i.e., total number of announced prefixes in case 1 may be
smaller than in case 2.

case 1:
The LIR obtains /29 at the beginning of IPv6 network construction.

case 2:
The LIR obtains /32, and /31, /30 additionally with the subsequent
allocation mechanism.

2. Objective of policy change
-----------------------------

This proposal modifies the eligibility for an organization to
receive or extend an IPv6 address space up to a /29 (/32 -/29) by
explaining how the extended space up to /29 will be used.


3. Situation in other regions
-----------------------------

RIPE-NCC:
The policy "Extension of IPv6 /32 to /29 on a per-allocation vs
per-LIR basis" is adopted in RIPE-NCC and LIRs in RIPE region can get
up to /29 by default.


4. Proposed policy solution
----------------------------

- Change the text to "5.2.2 Minimum initial allocation size" of
current policy document as below:

Organizations that meet the initial allocation criteria are
eligible to receive an initial allocation of /32. The organizations
can receive up to /29 by providing utilization information of the whole
address space.

- Change /32 to /29 in "5.2.3 Larger initial allocations”

Initial allocations larger than /29 may be justified if:

- Add following text as 5.3.4

5.3.4 Extend existing allocations to /29
LIRs that hold one or more IPv6 allocations are able to request
extension of each of these allocations up to a /29 without meeting
the utilization rate for subsequent allocation by providing their network
plan to show how the whole address space will be used.


5. Explain the advantages of the proposal
-----------------------------------------

- It is possible to utilize address blocks which is potentially
  unused into the future.

- Organizations can design their IPv6 networks more flexibly.

- It will be possible for LIRs to control traffic easier.


6. Explain the disadvantages of the proposal
--------------------------------------------

Some people may argue this will lead to inefficient utilization of
IPv6 space since LIRs can obtain huge address size unnecessarily.
However, this will not happen because larger address size needs
higher cost to maintain that address block.


7. Impact on resource holders
-----------------------------

NIRs must implement this policy if it is implemented by APNIC.


8. References (if required)
---------------------------

[1] IPv6 address allocation and assignment policy
http://www.apnic.net/policy/ipv6-address-policy

[2] APNIC guidelines for IPv6 allocation and assignment requests
https://www.apnic.net/publications/media-library/documents/resource-guidelines/ipv6-guidelines

[3] Packet Filter and Route Filter Recommendation for IPv6 at xSP routers
https://www.team-cymru.org/ReadingRoom/Templates/IPv6Routers/xsp-recommendations.html

[4] IPv6 BGP filter recommendations
http://www.space.net/~gert/RIPE/ipv6-filters.html



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