The MFIA (Mediterranean Federation of Internet Associations) has chosen Tunis to host (this Saturday 1st December 2018) its next IPV6 meeting.

In partnership with Tunisian Post, ICANN, CCK, ATI, INT and ISOC Tunisia and in the presence of a panel of international experts, this Day will be dedicated to the opportunities and the approaches to  IPV6 at the national, African and international levels facing the “limitations” of IPv4 addressing.

” Out of the international stock of IPV4 public addresses! “.

Since February 2011, the Internet Assigned Numbers Authority (IANA), that oversees the global allocation of IP addresses, has declared that it no longer has IPV4 public addresses to assign to the Regional Internet Registries (RIR), and that any new request for IP addresses can only be satisfied through the new protocol IPV6 which allows an almost infinite number of addresses thanks to a 128-bit (16-octet) coding, ie 3.4.1038 addresses (about 667 millions of billions of IP addresses available per mm2 of the Earth’s surface), while IPV4 only had 4 billion addresses.

In addition to their almost unlimited availability, IPV6 addresses have the enormous advantage of having a simplified packet header with fixed size, which makes it easier for routers to handle.

Since IANA has no longer had IPV4 public addresses to allocate to the RIRs for several years, the RIRs themselves are gradually depleting their stocks. To overcome this shortage and postpone the date of exhaustion, certain techniques have been used, such as:

  • Network Address Translation (NAT), which allows many computers in a private network to share a public address ;
  • Usage of previously reserved address blocks (such as
  • Voluntary recuperate of previously generously allocated blocks
  • Recovery of previously assigned blocks that are not announced on the Internet
  • The commerce of IP addresses blocks in a market between customers

Nevertheless, the migration to IPV6 remains necessary for all those who currently use IPV4 addresses, for several reasons, one of them is the risk of being in the IPV4 environment without interesting content to access and without interesting Internet users to see its own content once the main actors on the Net would have made their transition to IPV6 and moved all their contents there.

But what is the reasonable timeline for a transition to IPV6, which must be done through a period of cohabitation of the two protocols? What is the role of each stakeholder to achieve the transition smoothly and at the lowest cost? These are the questions that IPV6 Day in Tunis will try to answer.


Source : Communiqué

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