Study for IPv4 and IPv6 Coexistence

IPv6 developed by Internet Engineering Task Force (IETF) regarded as the next generation Internet Protocol asks for the need for replacing the current Internet Protocol (also known as IPv4). IETF being harbinger to this new technology proposes several transition mechanisms for the purpose of integration of IPv6 with the existing networks. This work examines and conjecturally evaluates various approaches aimed at the coexistence of IPv4 together with IPv6, namely dual stack, tunneling and translation mechanisms. This paper throws light on the basis of these different approaches along with the various issues associated with their practical implementations.