Date Added: Dec 2009
Studies in IPv4 and IPv6 area have been done, but there is still a gap for improvement which can benefit to all users. IPv6 slow uptakes give one a hint that IPv4 and IPv6 will co-exist for a long time just like IPX for Novell computers. Performance of IPv6 network itself is one of the few reasons why migration of IPv6 is slow. IPv6 is an upgraded version of IPv4. Address features is the main changes between IPv4 and IPv6. The 128 bits address space in IPv6 was built to overcome IPv4 address space shortage. Theoretically, better network performance should be achieved after migrating to IPv6 network but the actual performance results still not clear.