In the next article, we are going to explore and analyze Mapping of Address and Port in depth. This topic has captured the attention of academics and experts in recent years, generating a debate that continues today. From its origins to its relevance in modern society, Mapping of Address and Port has been the subject of studies and research that have shed light on its multiple facets and its implications in different areas. Through a multidisciplinary approach, we will examine the various perspectives that exist around this topic and its impact on everyday life. In addition, we will delve into little-known aspects and the latest news related to Mapping of Address and Port, with the aim of providing the reader with a complete and updated vision of this fascinating matter.
| IPv6 transition mechanisms |
|---|
| Standards Track |
| Experimental |
| Informational |
| Drafts |
| Deprecated |
Mapping of Address and Port (MAP) is a proposal that combines A+P port address translation with the tunneling of legacy IPv4 protocol packets over an ISP's internal IPv6 network.
MAP uses the extra bits available in the IPv6 address to contain the extra port range identifier bits of the A+P addressing pair that cannot be encoded directly into the IPv4 address, thus eliminating the need for "port routing" within the carrier network by leveraging the provider's own IPv6 rollout.
In effect, MAP is an (almost) stateless alternative to Carrier-grade NAT and DS-Lite that pushes the IPv4 IP address/port translation function (and therefore the maintenance of NAT state) entirely into the existing customer premises equipment IPv4 NAT implementation, thus avoiding the NAT444 and statefulness problems of carrier-grade NAT.