To find out the MAC addresses of other devices on your network, use the ifconfig command again but this time include the --mac-address option. For example, to find out the MAC address for my home router, I would type: ifconfig --mac-address 00:12:34:56:78:9a If you want to find out the MAC address for a specific device on your network, you can also use the ip route command and specify its IP address instead of its MAC address.