Networking, Iris, Cannot search MAC addresses

I am an IT Professional, and I cannot search for MAC addresses in Iris.

Networking suggests the following:

If you are still experiencing difficulty locating MAC addresses, please contact the Help Desk for assistance.  Be sure to include the MAC address(es), and the network(s) that you are searching on.  Also, include any other details that may assist with troubleshooting the issue (e.g. error messages, steps taken to troubleshoot, etc.), as well as your contact information.