See this for more information: http://www.ausphotography.net.au/for...ges_on_the_netThe American Registry for Internet Numbers (ARIN), the nonprofit group that manages Internet addresses for Canada, most Caribbean countries, and the United States, announced that it has activated its Unmet Request Policy. What that means is that there are no longer enough IPv4 address blocks available for the demand.
How many are left? Out of the ARIN's address pool, the IPv4 Address Report shows only 0.0085 /8 IPv4 address blocks. In English, instead of network jargon, ARIN has not quite 500 address blocks left. In other words, we're down to the last two-to-four weeks of addresses.
If you still need Internet addresses, you have several options. First, you can take the largest available block of IPv4 addresses that ARIN will give you from its remaining inventory. Next, you can buy an IPv4 address from an Internet address reseller. Or, you can also go on a waiting list for IPv4 addresses.
Impact on you? For now not much, but we (the Internet) are reaching the end of the IPv4 rubber band.
Sadly most Aussie ISPs still have not deployed IPv6 for their retail customers.
The good news is that AP is already running IPv6 (dual stacked with IPv4) and has been for nearly two years.
Check the bottom of the page to see if you are already using IPv6.
If you have both IPv4 and IPv6 then IPv6 will be the default access mode.