Additional NAT64/464XLAT Deployment Guidelines in Operator and Enterprise Networks

This document describes how NAT64 (including 464XLAT) can be deployed in an IPv6 network, whether cellular ISP, broadband ISP, or enterprise, and possible optimizations. The document also discusses issues to be considered when having IPv6-only connectivity, regarding: a) DNS64, b) applications or devices that use literal IPv4 addresses or non-IPv6 compliant APIs, and c) IPv4-only hosts or applications.