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2 years, 11 months ago
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20 years ago, in December, 1995 the specification of the IPv6 protocol (RFC 1883) was published. The protocol was conceived as replacement for the IPv4 protocol existing up to that moment when it became clear that with acceleration of growth of the Internet and the devices of the IP address connected to it have to end quickly enough. 20 years later the IPv6 protocol 10% of all devices connected to the Internet use.

The statistics on use gathers the Google company – periodically at users of services of the company the script checking a possibility of loading of information through IPv6 is started. In particular it is known that in the working days the smaller number of users (8%) has an access to IPv6, than in days off (10%). Apparently, at house connections the situation is slightly better, than at workers.

Judging by the world map, distribution of access to the new protocol for the present very uneven. Green color means rather high percent of use of IPv6 (the USA – 24%, and the leader in this parameter, Belgium – 43%). Red and orange colors mean that users of IPv6 in these countries test delays in connection in comparison with IPv4.

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The problem with fast distribution of IPv6 consists that IPv4 was thought over without a possibility of growth. It is possible to increase connection speed, without changing protocols, it is possible to transfer any data, without changing the equipment – but for transition to IPv6 it is necessary to be engaged in an upgrade and/or replacement of devices.

If the devices getting in the way between the sender of a packet and its receiver support IPv6, they support also IPv4 – but not on the contrary. If at least one of devices on this long way (servers, clients, routers, firewalls, balancers, other managing systems) is not supported by IPv6 – data transmission under this protocol will be impossible.

For the last 4 years the quantity of the using IPv6 of devices grows approximately by 2,5 times a year. But all the same not too fast – considering this growth that all rather big ranges of free IPv4-addresses were already distributed. Everywhere new users of providers appear for Carrier Grade NAT (CGN) because of shortage of addresses.

Apparently, the come year will not become year when completely refuse use of the IPv4 protocol – but progress in this direction is all the same noticeable.

This article is a translation of the original post at geektimes.ru/post/268680/
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