Such 1-for-1 address rewriting does not provide the topology
hiding that many people seem to like of their existing NAPT
devices, nor does such 1-for-1 address rewriting obscure the
number of hosts behind the NAT. Such obscuring can be useful
for certain businesses (there are, today, small ISPs in certain
countries that do not want their country's PTT to know the
ISP's actual market share, for fear tarrifs or advertising to
compete with the small ISP will be increased).
So how far, exactly, are you prepared to bend over backwards
and crack
the spine of the IP architecture to accommodate 0.01% or so of its
users? Not to mention the cost increases for all the extra protocol
layers and debugging that must be borne by the other 99.99%?
I am not willing to bend over backwards or even sideways for
such numbers.
-d
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