The 3GPP (3rd Generation Partnership Project) decision to use IPv6 for increasingly functional mobile equipment.Here are some of the reasons we need to transition to IPv6: It is not helped by the constant roll-back and fiddling with the IPv6 specifications. The transition will be accompanied by much yelling, screaming, gnashing of teeth and grim resignation. Nevertheless, the internet is rapidly approaching the time - primarily due to IPv4 address depletion - when there is little choice but to move to IPv6. This fact alone will keep users from implementation if they have any choice in the matter. IPv6 is big and complex in comparison with IPv4. In retrospect this was probably a Good Thing ™ since much of the recent (2010/2015) IPv6 work has been to reduce IPv6 address complexity, interworking and overall functionality. The can was effectively kicked down the road. IPv6 has been around since at least 1995 but the CIDR initiative of the mid-nineties pushed back any, then pressing, need for IPv6's increased address range. This is about the number where each blade of grass on the planet could have its own IPv6 address. An IPv4 address is 32 bits, an IPv6 address is 128 bits. Defined in RFC 2460 (and updated by RFC5095 and RFC5722).
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