Hello thx @JerryP magic@odroidc2:~/MagicMirror/modules/MMM-Assistant2Display$ sudo apt-get install arp-scan Reading package lists... Done Building dependency tree Reading state information... Done arp-scan is already the newest version (1.9.5-1). 0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded. magic@odroidc2:~/MagicMirror/modules/MMM-Assistant2Display$ This does not solve my concern.