Steve Crocker wrote:
Today,
one can pretty much count on IPv4 connectivity around the world, and
one can also count on being to reach almost any service (Google,
Amazon, CNN, etc.) via IPv4. What's the estimated date when those two
statements stop being true?
That's not a true problem. The problem is that, IPv6 only server can
be reached by IPv4 only clients only through legacy NAT between IPv4
and IPv6, which practically means that IPv6 only servers can offer
services which dose not require end to end transparency.
So, there is no need to deploy IPv6 merely because it will restore the
end to end transparency.
On the other hand, with NAT, which can be end to end transparent,
IPv4 capable servers can be reached by IPv4 only clients, optionaly
with end to end transparency.
Masataka Ohta
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