What we predicted a few months ago (DySpc) Diagnosis and PC Solutions, IPv4 addresses were being finalized. With the assignment of the last five blocks IANA has allocated over five regions of the world, the well is exhausted and this marks a milestone in Internet history .
The deal has been proportionally between ARIN (North America), LACNIC (Latin America and some Caribbean islands), NIC RIPE (Europe, Middle East and central Asia) AfriNIC (Africa) and APNIC (East Asia and Pacific region). With the assigned addresses have until September, after ... IPv6.
IP address space provided by IPv4 is 32 bit (4,294,967,296 IP addresses). IPv6 address space is a 128-bit , which translated number of directions, is an astronomical figure (340 sextillion IP address). When IPv4 was designed, 4,300 million IP addresses appear to be sufficient in the 70's, but this week have been exhausted.
There are several reasons why this has happened. On the one hand, only 14% of IP addresses are used effectively . The assignments were not performed optimally in the past, especially in the 80's, at that time Internet was not extended beyond the scientific, university and government.
Furthermore, buoyant emerging economies, especially Asia and Pacific, who have increasingly demanded new directions, and finally unprecedented growth of the mobile terminals that have revolutionized the concept of connectivity.
The fundamental problem is that IPv4 and IPv6 are incompatible . IPv4 addresses consist of 4 sets of numbers whose highest value is 255 (example: 195.235.113.3) for IPv6 and consist of eight groups of four hexadecimal digits can be compressed if any group is "zero."
The change effort will lie with the Internet service providers, network operators and major portals. Some U.S. government agencies have already implemented IPv6. The home user should not notice anything , although in the medium term we may need to change the router.
The very short term solution is to use NAT (Network Address Translation). Many large corporations and ISPs will thrive in the coming months with this system, but the final solution is the widespread deployment of IPv6. Fortunately modern operating systems and in particular those equipped mobile terminals IPv6 support.
Updated : Speaking of "inconsistency." Thinking about the internal network your home or small business, the decision is to mount the internal network with IPv4 or IPv6, the router is responsible for managing and directing the two types of networks. The threshold of coexistence IPv4 and IPv6 is 20 years. For now, small areas need not change anything.
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