This module checks for the public source IP address of the current route to the RHOST by querying the public web application at ifconfig.me. It should be noted this module will register activity on ifconfig.me, which is not affiliated with Metasploit.
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
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