Ownerless PI Revokation, was Re: [address-policy-wg] Revised 2007-01...

Florian Weimer wrote:
> * Shane Kerr:
>
>   
>> Fortunately there are no secrets in the routing table! So, it is easy
>> to see if any given space is being routed or not.
>>
>> The only time there is a problem is if revoked space is still being
>> routed by someone.
>>     
>
> Some address space owners rely the uniqueness property.  This applies to
> 3/8 and 9/8, for example, but I'm sure that it happens on a smaller
> scale, too.
>
>   

And, more importantly, PI space that is not publicly routed but must be 
unique. On behalf of clients in the past I have applied for and had 
assigned PI space for intra-organisational and/or VPN space. These 
large, sometimes multinational, companies have public connectivity and 
use private address space internally and where they need a VPN or secure 
connection between themselves they do not want that in the public 
routing tables but cannot use private space.

If this space is reclaimed on the simplistic basis of "it wasn't in the 
public routing table yesterday (or ever)" then reassigned, suddenly the 
original assignee finds their private and confidetial traffic might 
start leaking out one of their public connections. Great.

Peter