Why IPv6?

The free pool of IPv4 addresses will be exhausted in a few years - some estimate by 2011. At that time Regional Internet Registries will have no more IPv4 addresses to distribute to APNIC members. As a result, continuous growth of the Internet will be curtailed.
For example, businesses that depend on the Internet may find it difficult to expand their existing customer base. The free pool of IPv4 addresses can be extended through a number of methods such as developing ISP-NAT, however these methods will only delay the inevitable exhaustion of the free pool of IPv4 addresses.
Most Internet specialists agree that the only viable long-term solution is the deployment of IPv6 networks.APNIC supports pro-active information sharing among the Internet community to further develop the Internet. Sharing of information may be especially critical to the transition of IPv6 given the technical, regulatory, business and public policy challenges such transition presents.