public static byte[] getIpBytes(OctetString mac) {
if (mac.getLength() != 18) throw new IllegalArgumentException("Not an I/Pv6 mac");
byte[] b = new byte[16];
System.arraycopy(mac.getBytes(), 0, b, 0, 16);
return b;
}
public static int getPort(OctetString mac) {
if (mac.getLength() != 18) throw new IllegalArgumentException("Not an I/Pv6 mac");
return ((mac.getBytes()[16] & 0xff) << 8) | (mac.getBytes()[17] & 0xff);
}