/** Usually returns MAC address (48 bits = 6 bytes). */
public static byte[] getMacAddress(final InetAddress addr) {
if (SystemUtils.getJavaVersion() < 1.6f) {
return null; // getHardwareAddress is not supported
}
final NetworkInterface ni;
try {
ni = NetworkInterface.getByInetAddress(addr);
} catch (SocketException e) {
return null;
}
if (ni != null) {
final byte[] mac;
try {
mac = ni.getHardwareAddress();
} catch (SocketException e) {
return null;
}
return mac;
}
return null;
}
