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<manpage name="avahi-autoipd" section="8" desc="IPv4LL network address configuration daemon">
<synopsis>
<cmd>avahi-autoipd [<arg>options</arg>] <arg>interface</arg></cmd>
<cmd>avahi-autoipd <opt>--kill</opt> <arg>interface</arg></cmd>
<cmd>avahi-autoipd <opt>--refresh</opt> <arg>interface</arg></cmd>
<cmd>avahi-autoipd <opt>--check</opt> <arg>interface</arg></cmd>
</synopsis>
<description>
<p>avahi-autoipd implements IPv4LL, "Dynamic Configuration of
IPv4 Link-Local Addresses" (IETF RFC3927), a protocol for
automatic IP address configuration from the link-local
169.254.0.0/16 range without the need for a central server. It
is primarily intended to be used in ad-hoc networks which lack a
DHCP server.</p>
<p>IPv4LL is part of the Zeroconf stack.</p>
<p>avahi-autoipd can be used as stand-alone address allocator
or as plugin for a DHCP client such as ISC's dhclient, where it
can be used as fallback solution if no DHCP server is found.</p>
<p>To allow communication between hosts that have only an IPv4LL
address assigned and hosts that only have a routable IP address
assigned you may add the following routes to both network
configurations:</p>
<p><opt>route add -net 169.254.0.0 netmask 255.255.0.0 dev eth0 metric 99</opt></p>
<p><opt>route add default dev eth0 metric 99</opt></p>
<p>See http://developer.apple.com/qa/qa2004/qa1357.html for more information.</p>
</description>
<options>
<option>
<p><opt>-D | --daemonize</opt></p>
<optdesc><p>Daemonize after startup. Implies <opt>--syslog</opt>.</p></optdesc>
</option>
<option>
<p><opt>-k | --kill</opt></p>
<optdesc><p>Kill an already running avahi-autoipd on the specified network interface. (Equivalent to sending a SIGTERM)</p></optdesc>
</option>
<option>
<p><opt>-r | --refresh</opt></p>
<optdesc><p>Tell an already running avahi-autoipd to re-announce the acquired IP address on the specified network interface. (Equivalent to sending a SIGHUP)</p></optdesc>
</option>
<option>
<p><opt>-c | --check</opt></p>
<optdesc><p>Return 0 as return code if avahi-autoipd is already running for the specified network interface.</p></optdesc>
</option>
<option>
<p><opt>-s | --syslog</opt></p>
<optdesc><p>Log to syslog instead of STDERR. Implied by <opt>--daemonize</opt>.</p></optdesc>
</option>
<option>
<p><opt>--debug</opt></p>
<optdesc><p>Enable verbose mode.</p></optdesc>
</option>
<option>
<p><opt>--no-drop-root</opt></p>
<optdesc><p>Don't drop root privileges after startup. We recommend not to use this option.</p></optdesc>
</option>
<option>
<p><opt>--no-chroot</opt></p>
<optdesc><p>Don't <manref section="2" name="chroot"/> the daemon. This option is only available when compiled with chroot() support.</p></optdesc>
</option>
<option>
<p><opt>-S | --start=</opt></p>
<optdesc><p>Try to acquire the specified IP address, which must be from the IPv4LL range 169.254.0.0/16.</p></optdesc>
</option>
<option>
<p><opt>-w | --wait</opt></p>
<optdesc><p>Wait until a IP address has been successfully acquired before detaching. Only valid in combination with <opt>--daemonize</opt>.</p></optdesc>
</option>
<option>
<p><opt>--force-bind</opt></p>
<optdesc><p>Acquire an IPv4LL address, even if a routable address has been configured on the interface.</p></optdesc>
</option>
<option>
<p><opt>--no-proc-title</opt></p>
<optdesc><p>Don't change the process name while
running. Unless this option is specified avahi-autoipd will
reflect its current state and the IP address in the process
title.</p></optdesc>
</option>
<option>
<p><opt>-h | --help</opt></p>
<optdesc><p>Show help.</p></optdesc>
</option>
<option>
<p><opt>-v | --version</opt></p>
<optdesc><p>Show version information.</p></optdesc>
</option>
</options>
<section name="Files">
<p><file>@pkgsysconfdir@/avahi-autoipd.action</file>: the script to run when an IP address as been acquired or is lost.</p>
</section>
<section name="Signals">
<p><arg>SIGINT, SIGTERM</arg>: avahi-autoipd will shutdown. (Same as <opt>--kill</opt>)</p>
<p><arg>SIGHUP</arg>: avahi-autoipd will re-announce the acquired IP address. (Same as <opt>--refresh</opt>)</p>
</section>
<section name="Authors">
<p>The Avahi Developers <@PACKAGE_BUGREPORT@>; Avahi is
available from <url href="@PACKAGE_URL@"/></p>
</section>
<section name="See also">
<p>
<manref name="autoipd.action" section="8"/>, <manref name="dhclient" section="8"/>
</p>
<p>http://avahi.org/wiki/AvahiAutoipd documents how avahi-autoipd is best packaged and integrated into distributions.</p>
</section>
<section name="Comments">
<p>This man page was written using <manref name="xml2man" section="1"
href="http://masqmail.cx/xml2man/"/> by Oliver Kurth.</p>
</section>
</manpage>