Zero-configuration networking: Difference between revisions

Revision as of 16:56, 20 August 2022

Revision as of 16:58, 20 August 2022

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IPv6 hosts are required to support multiple addresses per interface; moreover, every IPv6 host is required to configure a link-local address even when global addresses are available. IPv6 hosts may additionally self-configure additional addresses on receipt of router advertisement messages, thus eliminating the need for a DHCP server.{{Ref RFC|4862}}

Both IPv4 and IPv6 hosts may randomly generate the host-specific part of an autoconfigured address. IPv6 hosts generally combine a prefix of up to 64 bits with a 64-bit EUI-64 derived from the factory-assigned 48-bit [[IEEE]] [[MAC address]]. The MAC address has the advantage of being globally unique, a basic property of the EUI-64. The IPv6 protocol stack also includes duplicate address detection to avoid conflicts with other hosts. In IPv4, the method is called ''link-local address autoconfiguration''.{{Ref RFC|3927}} However, [[Microsoft]] refers to this as ''[[Link-local address#IPv4|Automatic Private IP Addressing]]'' ([[APIPA]])<ref>{{Citation | url = http://msdn.microsoft.com/en-us/library/aa505918.aspx | publisher = Microsoft | title = MS Developer Network | contribution = Apipa | access-date = 2008-07-05 | archive-url = https://web.archive.org/web/20170318001826/https://msdn.microsoft.com/en-us/library/aa505918.aspx | archive-date = 2017-03-18 | url-status = dead }}</ref> or '''''Internet Protocol Automatic Configuration''''' ('''IPAC'''). The feature is supported in Windows since at least [[Windows 98]].<ref>{{Citation | url = http://support.microsoft.com/kb/220874 | title = Knowledge base | contribution = How to use automatic TCP/IP addressing without a DHCP server | publisher = Microsoft}}</ref>

==Name service discovery==