libavahi-core-dev - 0.8-5+deb11u2 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.
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This package contains the development files for Avahi's embeddable
mDNS/DNS-SD stack. This can be used by embedded application developers
to integrate mDNS/DNS-SD functionality into their applications.
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You should not however use this library for non-embedded applications, you
should use libavahi-client-dev which interacts with the avahi daemon.