Jeroen Massar writes:
Example.com is new and only gets a IPv6 subnet from
RIPE/APNIC/whatever for whatever reason.
At this point they're not connected to the Internet. Pretty damn stupid,
if they actually wanted Internet addresses.
MX 20 mail-ipv4.example.com.
Okay. With the help of an SMTP proxy having an Internet address, a web
proxy having an Internet address, etc., this company manages to connect
to the Internet. IPv6 is functionally identical to 10.* here.
Now, some people have noticed a little problem with this picture, which
is that there are only a few billion Internet addresses. How would you
suggest solving this problem?