avahi-autoipd - 0.8-5+deb11u3 main

Avahi is a fully LGPL framework for Multicast DNS Service Discovery.
It allows programs to publish and discover services and hosts
running on a local network with no specific configuration. For
example you can plug into a network and instantly find printers to
print to, files to look at and people to talk to.
.
This tool 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.