Zero-configuration networking: Difference between revisions

Revision as of 13:06, 23 August 2022

Revision as of 08:21, 14 September 2022

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===Avahi===

[[Avahi (software)|Avahi]] is a Zeroconf implementation for [[Linux]] and [[Berkeley Software Distribution|BSD]]s. It implements [[IPv4LL]], mDNS and DNS-SD. It is part of most Linux distributions, and is installed by default on some. If run in conjunction with nss-mdns, it also offers host name resolution.<ref>{{Citation | url = http://0pointer.de/lennart/projects/nss-mdns | title = nss-mdns 0.10 | last = Lennart | publisher = 0 pointer | place = [[Germany|DE]]}}</ref>

Avahi also implements binary compatibility libraries that emulate Bonjour and the historical mDNS implementation Howl, so software made to use those implementations can also utilize Avahi through the emulation interfaces.

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The above implementations are all stand-alone daemons or plugins for [[DHCP]] clients that only deal with link-local IP addresses. Another approach is to include support in new or existing DHCP clients:

* Elvis Pfützenreuter has written a patch for the uDHCP client/server.<ref>{{Citation | url = http://udhcp.busybox.net/lists/udhcp/2005-May/000124.html | publisher = Busy box | title = udhcpc | contribution = Zeroconf in udhcpc | type = electronic mail message | date = May 2005 | access-date = 2006-03-15 | archive-url = https://web.archive.org/web/20060206072249/http://udhcp.busybox.net/lists/udhcp/2005-May/000124.html | archive-date = 2006-02-06 | url-status = dead }}</ref>

* dhcpcd<ref>{{Citation | url = http://roy.marples.name/projects/dhcpcd/wiki | title = dhcpcd | first = Roy | last = Marples | type = project | format = wiki | access-date = 2011-01-07 | archive-url = https://web.archive.org/web/20100712131058/http://roy.marples.name/projects/dhcpcd/wiki | archive-date = 2010-07-12 | url-status = dead }}</ref> is an [[opensourceOpen-source software|open source]] [[DHCP]] client for [[Linux]] and [[BSD]] that includes IPv4LL support. It is included as standard in [[NetBSD]].

Neither of these implementations addresses kernel issues like broadcasting [[Address Resolution Protocol|ARP]] replies<ref>{{Citation | url = http://www.science.uva.nl/research/air/wiki/LinkLocalARPMeasurements | title = AIR | type = wiki | contribution = Link-Local ARP Measurements | publisher = UVA | place = [[Netherlands|NE]]}}</ref> or closing existing network connections.