avahi-autoipd.action
Handle IPv4 link-local address events
TLDR
SYNOPSIS
/etc/avahi/avahi-autoipd.action event interface address
DESCRIPTION
avahi-autoipd.action is the action script automatically called by avahi-autoipd whenever an IPv4 Link-Local address has been acquired or when an IP address conflict is detected. The script handles adding or removing the specified address from the network interface.
The script receives three arguments: an event string, the network interface name, and the IPv4LL address. Based on the event type, it performs the appropriate network configuration:
BIND - An IP address has been successfully acquired; the script adds it to the network interface
CONFLICT - avahi-autoipd detected the IP address is already in use on the local network; the script removes the configured address
UNBIND - A routable address has been configured to the interface by another program; the script removes the IPv4LL address to avoid conflicts
STOP - avahi-autoipd is shutting down; the script removes the IP address from the interfaceThe default script typically uses ip or ifconfig commands to manipulate interface addresses. Users can customize this script to integrate with specific network management systems or add additional configuration steps.
PARAMETERS
_event_
Event type: BIND, CONFLICT, UNBIND, or STOP_interface_
Network interface name (e.g., eth0, wlan0)_address_
IPv4LL address from the 169.254.0.0/16 range
CAVEATS
The script runs with elevated privileges and is executed automatically by avahi-autoipd. Modifications to this script should be tested carefully as errors can prevent proper IPv4LL address configuration. Always maintain a backup before customization.
SEE ALSO
avahi-autoipd(8), dhclient-script(8), ip(8), ifconfig(8)
