[arin-ppml] Clarify /29 assignment identification requirement

[David Krumme]

>  If the IP assignment is via some
> automated process (DHCP, IPCP, etc.) then you likely have a pool of IPs
> for automated assignment, and regardless of how long those automated
> assignments last, I wouldn't expect you to have records (other than logs)
> mapping the assignment to a customer.

I believe that CALEA requires us to be able to map IP to/from customer at
any time upon request.  So we are supposed to have such records.

-David