localMac_addr.go
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localMac_addr.go
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	package main

	import (
	"fmt"
	"net"
	"strings"
	"os"
	)

	func main() {
	// localMacAddr, err := net.()
	// if err != nil{
	// panic(err)
	// }
	// fmt.Println("Local MAC addr:",localMacAddr)
	//
	//

	var currentIP, currentNetworkHardwareName string

	currentIP = "134.197.41.183/22"

	interfaces, _ := net.Interfaces()
	for _, interf := range interfaces {
	if addrs, err := interf.Addrs(); err == nil {
	for index, addr := range addrs {
	if addr.String() != "127.0.0.1/8" {
	log.Println("[", index, "]", interf.Name, ">", addr)

	// only interested in the name with current IP address
	if strings.Contains(addr.String(), currentIP) {
	log.Println("Use name : ", interf.Name)
	currentNetworkHardwareName = interf.Name
	}
	}
	}
	}
	}

	log.Println("-------------------------------------------")

	// extract the hardware information base on the interface name
	// capture above
	netInterface, err := net.InterfaceByName(currentNetworkHardwareName)

	if err != nil {
	fmt.Println(err)
	}

	name := netInterface.Name
	macAddress := netInterface.HardwareAddr

	log.Println("Hardware name : ", name)
	log.Println("MAC address : ", macAddress)

	// verify if the MAC address can be parsed properly
	hwAddr, err := net.ParseMAC(macAddress.String())
	if err != nil {
	log.Println("No able to parse MAC address : ", err)
	os.Exit(-1)
	}
	log.Println("Physical hardware address : %s \n", hwAddr.String())

	}



	// net.Interfaces() // returns an array of interfaces
	// net.InterfaceByName(oneOfTheReturnedInterfaces)
	// ^.HardwareAddr