Manual Reference Pages  - avahi-autoipd (8)


avahi-autoipd - IPv4LL network address configuration daemon


See Also


avahi-autoipd [options] interface

avahi-autoipd --kill interface

avahi-autoipd --refresh interface

avahi-autoipd --check interface


avahi-autoipd implements IPv4LL, "Dynamic Configuration of IPv4 Link-Local Addresses" (IETF RFC3927), a protocol for automatic IP address configuration from the link-local range without the need for a central server. It is primarily intended to be used in ad-hoc networks which lack a DHCP server.

IPv4LL is part of the Zeroconf stack.

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.

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:

route add -net netmask dev eth0 metric 99

route add default dev eth0 metric 99

See for more information.


-D | --daemonize
  Daemonize after startup. Implies --syslog.
-k | --kill
  Kill an already running avahi-autoipd on the specified network interface. (Equivalent to sending a SIGTERM)
-r | --refresh
  Tell an already running avahi-autoipd to reannounce the acquired IP address on the specified network interface. (Equivalent to sending a SIGHUP)
-c | --check
  Return 0 as return code if avahi-autoipd is already running for the specified network interface.
-s | --syslog
  Log to syslog instead of STDERR. Implied by --daemonize.
  Enable verbose mode.
  Don’t drop root priviliges after startup. We recommend not to use this option.
  Don’t chroot(2) the daemon. This option is only available when compiled with chroot() support.
-S | --start=
  Try to acquire the specified IP address, which must be from the IPv4LL range
-w | --wait
  Wait until a IP address has been sucessfully acquired before detaching. Only valid in combination with --daemonize.
  Acquire an IPv4LL address, even if a routable address has been configured on the interface.
  Don’t change the process name while running. Unless this option is specified avahi-autoipd will reflect it’s current state and the IP address in the process title.
-h | --help
  Show help.
-v | --version
  Show version information.


/etc/avahi/avahi-autoipd.action: the script to run when an IP address as been acquired or is lost.


SIGINT, SIGTERM, SIGQUIT: avahi-autoipd will shutdown. (Same as --kill)

SIGHUP: avahi-autoipd will reannounce the acquired IP address. (Same as --refresh)


The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from


autoipd.action(8), dhclient(8)


This man page was written using xml2man(1) by Oliver Kurth.

Manuals avahi-autoipd (8) User
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