This module sends mDNS queries, which are really just normal UDP DNS queries done (usually) over multicast on a different port, 5353.
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use auxiliary/scanner/mdns/query
msf auxiliary(query) > show actions
...actions...
msf auxiliary(query) > set ACTION < action-name >
msf auxiliary(query) > show options
...show and set options...
msf auxiliary(query) > run
Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.
– Jim O’Gorman | President, Offensive Security