title: Get android Ethernet MAC Address (not wifi interface)
body: <p>I'm using Android with Api level 8 and I want to get the Address of my Ethernet interface (eth0).</p>
  
  <p>On API level 8, the NetworkInterface class don't have the function getHardwareAddress().
  The WifiManager also does not work since this is not an Wireless interface.</p>
  
  <p>Thanks in advance!</p>