avahi-autoipd(8)

💖 avahi-autoipd — the IPv4LL network address configuration daemon ✨

okay bestie, so this is the avahi-autoipd manual page, straight out of the System Manager's Manual section. she's a daemon, she's iconic, and she's about to hand your little ad-hoc network an IP address with zero server drama. let's get into it 🫶

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✨ NAME ✨

avahi-autoipd — IPv4LL network address configuration daemon 💅

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🌸 SYNOPSIS 🌸

avahi-autoipd [options] interface

avahi-autoipd --kill interface

avahi-autoipd --refresh interface

avahi-autoipd --check interface

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🦋 DESCRIPTION 🦋

so avahi-autoipd implements IPv4LL, aka "Dynamic Configuration of IPv4 Link-Local Addresses" (IETF RFC3927), which is a protocol for automatic IP address configuration from the link-local 169.254.0.0/16 range — and the whole point is you don't need a central server at all. she's primarily meant to be used in ad-hoc networks that are out here lacking a DHCP server. no server, no problem, we move 💅

IPv4LL is part of the Zeroconf stack. periodt.

avahi-autoipd can be used as a stand-alone address allocator, or as a plugin for a DHCP client such as ISC's dhclient, where she can be used as a fallback solution if no DHCP server is found. versatile queen 👑

now, if you want communication between hosts that have only an IPv4LL address assigned and hosts that have only a routable IP address assigned, you may add the following routes to both network configurations:

route add -net 169.254.0.0 netmask 255.255.0.0 dev eth0 metric 99

route add default dev eth0 metric 99

see http://developer.apple.com/qa/qa2004/qa1357.html for more information 👀

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💅 OPTIONS 💅

• -D | --daemonize — daemonize after startup. implies --syslog. she's leaving to go be mysterious in the background 🧚
• -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 re-announce 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. vibe check: passed or not 🫶
• -s | --syslog — log to syslog instead of STDERR. implied by --daemonize.
• --debug — enable verbose mode. she will Not stop talking 🔥
• --no-drop-root — don't drop root privileges after startup. > we recommend not to use this option. bestie, pls. listen to the man page 🙈
• --no-chroot — 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 169.254.0.0/16. main character energy, picking her own address 👑
• -w | --wait — wait until an IP address has been successfully acquired before detaching. only valid in combination with --daemonize. she's not leaving until she's got what she came for 💅
• --force-bind — acquire an IPv4LL address, even if a routable address has been configured on the interface. stubborn in the best way 😤
• --no-proc-title — 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. lowkey a live feed of her life 🌈
• -h | --help — show help.
• -v | --version — show version information.

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🎀 FILES 🎀

• /etc/avahi/avahi-autoipd.action — the script to run when an IP address has been acquired or is lost. her little sidekick that reacts to the drama 🍓

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⭐ SIGNALS ⭐

• SIGINT, SIGTERM — avahi-autoipd will shutdown. (same as --kill) 😭
• SIGHUP — avahi-autoipd will re-announce the acquired IP address. (same as --refresh) ✨

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🌈 AUTHORS 🌈

the Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/ — absolute legends, no cap 💜

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💖 SEE ALSO 💖

• avahi-autoipd.action(8), dhclient(8)
• http://avahi.org/wiki/AvahiAutoipd documents how avahi-autoipd is best packaged and integrated into distributions. go read it if you're packaging her up, iykyk 📦

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🧚 COMMENTS 🧚

this man page was written using xml2man(1) by Oliver Kurth. shoutout 🫶

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okay that's the whole page, you ate it, you read it, you understood it. and just so you know where this came from: this lil beauty lives in the Manuals source, filed under the User section, and her name is, obviously, avahi-autoipd(8). slay, go configure something 💅✨