Ahhhh I was making configuration changes on a different device and then transferred the files over to my pi. I forgot to install arp-scan on my pi.
Thanks

I’m working on getting the MMM-NetworkScanner module working but I’ve hit a wall and I just don’t know what I’m doing wrong at this point. My issue is that I can’t get this module to work with mac addresses. It only shows devices connected to the local network with an ip address. Since local ip’s tend to change and I’d like to assign permanent names to the devices I’d prefer to use mac addresses. The problem is that the networkscanner can never find any devices via mac address. I copied and pasted the address directly from my network’s client list here :

Here is my config for the module:

{
                        module: "MMM-NetworkScanner",
                        position: "bottom_right",
                        header: "Who's home:",
                        classes: "network",
                        config:
                        {
                                devices:
                                [
                                        {
                                                macAddress: "cc:61:e5:54:03:fd", name: "Phone1", icon: "male"
                                        },
                                        {
                                                macAddress: "cc:62:e5:52:03:fd", name: "test", icon: "female"
                                        },
                                ],
                                updateInterval: "2",
                                showLastSeen: "true",
                                showLastSeenWhenOffline: "true",
                                keepAlive: "5",
                                showUnknown: "false",
                                showOffline: "true",
                        }
                },

Testing the same thing with the local ip address of that device works perfectly fine, ex using ipAddress: “192.168.0.26”. Phone1 is an actual device while test is just made-up.