Get the local mac address.
$ go get -u github.com/xjh22222228/mac// Fetch the computer's MAC address
macAddr, err := mac.Default()
// Fetch the computer's MAC address for a specific interface
macAddr, err := mac.AddrWithIface("en0")
// Validate that an address is a MAC address
isMac := mac.IsIsMAC("ac:de:48:00:11:22")