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Link-local addresses may be assigned manually by an administrator or by automatic operating system procedures. In Internet Protocol (IP) networks, they are assigned most often using stateless address autoconfiguration, a process that often uses a stochastic process to select the value of link-local addresses, assigning a pseudo-random address that is different for each session.
Following World IPv6 Day in July 2011, there were reports of a substantial reduction in IPv6 brokenness as a result of that experiment. [7] In the year following the trial, but prior to the World IPv6 Launch date, brokenness levels were reported to have risen slowly back upwards again towards 0.03%.
Version 1 of the protocol was described in RFC 2281 in 1998. Version 2 of the protocol includes improvements and supports IPv6 but there is no corresponding RFC published for this version. The protocol establishes an association between gateways in order to achieve default gateway failover if the primary gateway becomes inaccessible.
A similar NCP, the IPv6 Control Protocol exists for IPv6. It can be used together with IPCP on the same PPP connection for a dual stack link. (When interfacing newer and older equipment that doesn't support IPv6 one sees LCP ProtRej messages for protocol 0x8057 from the side that doesn't support IPV6CP.)
IPsec was a mandatory part of all IPv6 protocol implementations, [2] and Internet Key Exchange (IKE) was recommended, but with RFC 6434 the inclusion of IPsec in IPv6 implementations was downgraded to a recommendation because it was considered impractical to require full IPsec implementation for all types of devices that may use IPv6.
9.2.1 Yes Yes Yes Yes Mageia: 7+ Yes Yes Yes Yes Mageia has had full support for IPv6 only and IPv4 + IPv6 since Mageia 7, as well as continuing to support IPv4 only systems. [15] macOS: Mac OS X 10.7 (Lion) Yes Yes Yes [16] Yes [17] Versions 10.7 through 10.10 often prefer IPv4 even when working IPv6 connectivity is available. [18]
IPv6 Now Pty Ltd [64] introduced the first [65] commercial-grade IPv6 tunnel broker service in Australia on April 30, 2008. Also, in June 2008, IPv6Now introduced the first dual-stacked (IPv4 & IPv6) web hosting service. [66] Internode is the first commercial ISP in Australia to have full IPv6 connectivity and make IPv6 available to customers. [67]
IPv6 addresses are assigned to organizations in much larger blocks as compared to IPv4 address assignments—the recommended allocation is a / 48 block which contains 2 80 addresses, being 2 48 or about 2.8 × 10 14 times larger than the entire IPv4 address space of 2 32 addresses and about 7.2 × 10 16 times larger than the / 8 blocks of IPv4 ...