The introduction of Internet Protocol Version 6 (IPV6) 4 years ago spelt good news for most people. With the capability of 340 undecillion 128-bit addresses, the ipv6 is a giant compared to its predecessors—the IPv4—which has 4.3 billion addresses. However, transition from the old protocol to the new one is not easy.
Most new technologies are backward compared to the old ones making it possible for the system to work with the new developments without having to undergo particular changes. Nevertheless, IPv6 doesn’t have this feature and transition is impossible. This makes the two protocols, in truth, parallel to each other. Although slow, there are still some ways of making a smooth transition.
Use of Dual Stack Routers
When a server is configured for IPv4 and IPv6 addresses, it can communicate with hosts in both networks. All you need is a dual stuck router configured for IPv4 and IPv6 addresses with its interfaces directed to the desired IP scheme network. In this case, the router acts as a medium for the accessibility of the hosts to the server in both versions of IP.
Tunneling is best used when you wish to pass data through an incompatible version of protocol where the versions are on intermediate transit networks or paths. In this case, two remotely situated IPv4 networks reach each other through a tunnel with ipv6 on the transit network. Alternatively, the situation can be turned around with IPv6 network on the remote sites while the IPv4 is on the transit site.
Using NAT Protocol Translation
You can make a smooth transition to the latest internet protocol through the use of a device enabled with Network Address Translation (NAT) Protocol Translation. In a case where a host configured with IPv4 address attempts to communicate with a server which has been enabled with IPv6 through internet that is not compatible with IPv4, the NAT Protocol Translation devices comes in as a mediator. It works by removing the IPv4 header from the IPv4 packet and puts on it an ipv6 header, then allows it to have access to the internet. When the IPv6 server gives a response intended for the IPv4 host, the device turns its working around.
Most internet-connected devices all over the world are still using IPv4. Thanks to the various technologies, the use of the old version of the protocol may go well into the future. Although there should be no urgency for ipv6 adoption, it’s advisable to plan for it. Remember that IPv4 will not be here forever and like most old systems, its usefulness is almost outlived and it will have to pave way for the new comer. Therefore, you will have to bade it goodbye someday.