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It has long been anticipated, but the available pool of unallocated Internet addresses using the older IPv4 protocol – which holds a total of slightly more than four billion IP addresses - has now dipped to below the 10 percent mark, meaning that there are only a bit over 400 million IP addresses left in the global pool of unallocated addresses.
“This is the time for the Internet community to act,” said Rod Beckstrom, ICANN’s President and Chief Executive Officer. “For the global Internet to grow and prosper without limitation, we need to encourage the rapid and widespread adoption of the IPv6 protocol.”
[edited by: engine at 8:16 pm (utc) on Feb. 1, 2010]
[edit reason] tidied up [/edit]
No, you would not. You'd simply contact the 'light fixture client' behind your NAT, using your one-and-only public IP address.