Re: NAT natural example, Re: [midcom] WG scope/deliverables

[Melinda Shore]

> The original example, of a single house with the global address of
> "The Tulip, UK"  is a naturally occurring example of something like ARP
> or something like tunneling, not something like NAT.  The distinction
> is betweeen doing a mapping/encapsulation and doing an address
> substitution.  NATs are all about doing address substitution; the
> post office does mapping/encapsulation to deliver to The Tulip.

Number portability is probably a better example - in the
US, at least, the called party's address is swapped out
at the ingress "router" and then swapped back in at the
last hope "router."

Melinda