Changes

== Introduction ==

== Introduction ==

Due to exhaustion of IPv4 addresses, it's becoming a common practice to configure routers, servers, standalone computers, IoT devices and many other appliances using IPv6 address pool. IP version 6 [[https://datatracker.ietf.org/doc/html/rfc8200 RFC8200]] defines the exact same features and functions as IPv4, but the way IP version 6 is implemented differs from IP version 4. While both IPv4 and IPv6 address pools are finite, IPv6 has an extremely large amount of available total addresses compared to IPv4. In theory, the total IPv4 address pool contains '''2^32'''=4,294,967,296. Some of these addresses are already reserved for internal or special use-cases.

Due to exhaustion of IPv4 addresses, it's becoming a common practice to configure routers, servers, standalone computers, IoT devices and many other appliances using IPv6 address pool. IP version 6 [[https://datatracker.ietf.org/doc/html/rfc8200 RFC8200]] defines the exact same features and functions as IPv4, but the way IP version 6 is implemented differs from IP version 4. While both IPv4 and IPv6 address pools are finite, IPv6 has an extremely large amount of available total addresses compared to IPv4. In theory, the total IPv4 address pool contains '''2³²'''=4,294,967,296. Some of these addresses are already reserved for internal or special use-cases.

In comparison, IPv6 has a pool of '''2^128'''=340,282,366,920,938,463,463,374,607,431,768,211,456 (more than 340 undecillion) available addresses. This amount of available addresses means that any device can have at least a single public IP address. This is especially relevant to the growing IoT industry as some of the devices require their own individual IP addresses to become reachable directly via the internet. However, while this IP address pool massive in theory, much like the IPv4, the '''IPv6 addressing''' has some notable rules and nuances that must be accounted for before implementing the newer IP standard.

In comparison, IPv6 has a pool of '''2¹²⁸'''=340,282,366,920,938,463,463,374,607,431,768,211,456 (more than 340 undecillion) available addresses. This amount of available addresses means that any device can have at least a single public IP address. This is especially relevant to the growing IoT industry as some of the devices require their own individual IP addresses to become reachable directly via the internet. However, while this IP address pool massive in theory, much like the IPv4, the '''IPv6 addressing''' has some notable rules and nuances that must be accounted for before implementing the newer IP standard.

==IPv4 vs IPv6 header==

==IPv4 vs IPv6 header==