[c-nsp] Carrier grade NAT44 & newest Cisco boxes

[Jean-Francois.TremblayING at videotron.com]

> But I am not sure if regulator can send port number with IP address.
> Without port number bulk port allocation will be useless feature.

This is why RFC6302 was written (http://tools.ietf.org/html/rfc6302). 

The source port will be required for any law enforcement or abuse case, 
because a timestamp and all connections logs aren't usually enough 
to prove the connection comes from a specific user on popular 
destinations. 

Anyway, good luck logging everything. For a large ISP, we're talking about
petabytes of data over a year. Bulk/range port allocation is a must IMHO. 

/JF