Understanding Network Address Translation–Protocol Translation
Network Address Translation–Protocol Translation (NAT–PT) is a protocol translation mechanism that can be done in two directions, from IPv4 address format to IPv6 address format and vice versa. NAT–PT binds the addresses in the IPv6 network with addresses in the IPv4 network and vice versa to provide transparent routing for the datagrams traversing between address realms.
In each direction, the static NAT defines a one-to-one mapping from one IP subnet to another IP subnet. The mapping includes a destination IP address translation in one direction and a source IP address translation in the opposite direction.
The main advantage of NAT–PT is that the end devices and networks can run either IPv4 addresses or IPv6 addresses and traffic can be started from any side.
