[arin-ppml] Encouraging IPv6 Transition

William Herrin bill at herrin.us
Wed May 16 14:23:52 EDT 2012

On 5/16/12, John Curran <jcurran at arin.net> wrote:
>    I was not asserting that provider-assigned IPv6 prefixes were an option
>    for any particular class of users.  What I was pointing out is that a
>    system which provides preemptive provider-independent assignments is
>    very similar to an algorithmic-based assignment scheme in that it
>    completely precludes any form of provider-based routing aggregation,
>    since each new customer with such a prefix results in a new route.

Hi John,

Yes... _ANY_ ARIN direct assignment whether it's preemptive,
algorithmic, requested with the existing process or otherwise,
precludes all presently-used forms of provider-based routing
aggregation. I'm just trying to understand what, if anything, you
think is different about preemptive assignment in this respect.

> On May 16, 2012, at 11:54 AM, William Herrin wrote:
>> Actually, I suppose if I'm being fair I talked broadly about
>> preemptively assigning addresses broadly to folks holding IPv4
>> addresses and folks holding AS numbers. ARIN also assigns IPv4
>> addresses to large single-homed organizations who, unlike multihomed
>> orgs, face no absolute technological barriers to using ISP addresses.
>> Does your view on aggregation change if discussion is limited to folks
>> holding AS numbers because they needed to multihome?
>    Widespread use of provider-independent IPv6 assignments has been deemed
>    unacceptable in the past by many in the community due to the potential
>    routing impact, and noting that if indeed this assumption has changed
>    (and every multi-homed organization can have their own IPv6 routing
> entry), Initial Assignment Criteria

"meeting one of the following criteria:
b. immediately becoming IPv6 Multihomed and using an assigned valid
global AS number,"

It's already ARIN policy (allegedly community consensus policy) that
multihoming is an acceptable and appropriate criteria for
provider-independent IPv6 assignment.

>    then revisiting algorithmic approaches could quickly facilitate making
>    IPv6 address blocks availability to all organizations holding AS
>    numbers, IPv4 address blocks, cell phones, etc.

Bill Herrin

William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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