Scan for mDNS/DNS-SD services published on the local network

 mdns-scan is a tool for scanning for mDNS/DNS-SD services published
 on the local network.
 .
 It works by issuing a mDNS PTR query to the special RR
 _services._dns-sd._udp.local for retrieving a list of all currently
 registered services on the local link.
 .
 mDNS/DNS-SD is part of Apple's Zeroconf strategy (a.k.a. Bonjour).
 The avahi-daemon package is an implementation of mDNS/DNS-SD.