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Stateful NAT64 Overview

Stateful NAT64 translates IPv6 addresses to public IPv4 addresses, allowing IPv6-only clients to contact IPv4 servers using unicast UDP, TCP, or ICMP. Stateful NAT64 translates the destination IPv6 address to the embedded IPv4 address, and translates the source IPv6 address to a public IPv4 address and port from a block of IPv4 addresses that you set aside.

Stateful NAT64 supports the following:

Round-robin port and address allocation (see Round-Robin Port Allocation).
Address pooling and endpoint independent mapping (see Address Pooling and Endpoint Independent Mapping for Port Translation).
Secured port block allocation (see Secured Port Block Allocation for Port Translation

Benefits of Stateful NAT64

Stateful NAT64 provides a way to:

Let IPv6-only clients contact IPv4 servers using unicast UDP, TCP, or ICMP
Move to an IPv6 network
Deal with IPv4 address depletion