You can obtain a pretty decent amount of information about leases your OS X computer gets just by looking in the Network System Preference pane, for each interface. However, you can get a little lot more information, as with most things, from the command line. First, we’re going to take a look at en0 on our host and see what the MAC address is: ifconfig en0 ether Now, we can look in the /var/db/dhcpclient/leases directory to see a list of all of the leases we have running on our system. Based on the MAC address of our computer, we should see a file there that starts with the name of…