Internet Society is organizing today 6 of June 2012 the World IPv6 Launch. This will not mean that we will close the Internet on the IPv4 protocol and transfer it to IPv6. It will also not mean that everyone needs to make the transition today. Most of you reading this is already ready to use IPv6. Most of modern computers are able to manage and configure they network interface cards (NIC) to both IPv4 and IPv6 addresses. But what is then IPv6 launch day? Big and important websites and Internet Service Providers participate in today’s day in the way that they will begin the transition from IPv4 and permanently enable IPv6.