[address-policy-wg] Any-cast or uni-cast solutions

On 23/05/2012, at 10:41 AM, Tore Anderson wrote:

> * Randy Bush
> 
>>> You can announce them anywhere you like. But you cannot assign them to
>>> end users outside outside of the region.
>> 
>> really?  so i have a /16 from ncc and i spread it over pops in ams, lon,
>> and nyc, but i can not have bgp-speaking customers in that address space
>> in nyc?  if true, that is soooo broken.
> 
> That is my understanding, at least. I asked this question to the RIR
> panel at the mic in Rome, whether and APNIC region ISP could (post APNIC
> depletion) set up a LIR in the RIPE region (or any other region), and
> allocate addresses from there and assign them to end users in their home
> region. The answer (which came from Geoff Huston IIRC) was something
> along the lines of «no, you have to assign the addresses in the service
> region from which they were allocated».


no - I don't think it was me (unless of course someone pops up with a video 
recording of me saying exactly that RIPE meeting! :-) )

I am personally of the school of thought that believes that addresses can be used
anywhere on or off the planet, irrespective of which RIR provided the
original block allocation or assignment. I don't think any other address
management regime makes efficient use of either our common routing system or the 
underlying address plant.


> If this was not the case, I would not have expected the APNIC depletion
> from significantly slow down the global rate of IPv4 delegations, only
> that it would simply shift from the APNIC region to other regions as
> IPv4-hungry Asian providers started allocating from other regions. But
> looking at http://www.potaroo.net/tools/ipv4/fig09.png for example, this
> does not appear to have happened.

I was anticipating such a shift in demand myself, and I too am slightly
surprised it has not happened.

On the other hand I understand that if APNIC sees a member request from an
organization with a home address from outside of the APNIC region there
is a typical exchange of "have you considered using <xxx> as your RIR, as
you appear to be outside of our regional service zone?" A typical response
may be along the lines of "ah yes, but we intended to deploy these addresses in
our in-region network".

So I suspect that there is a defacto assumption made by many folk about the
regional constraints of the use of addresses, but as far as I am aware it is
not a rule that is applied by the routing system itself.

regards,

  Geoff
    (speaking personally in this case, and I'm probably wrong anyway!)