Check if IPv6 Address is EUI-64 in Java

IPv6.java

import com.googlecode.ipv6.IPv6Address;

/*
Replace the IPv6 address with anything you like, Link Local or Global, based on the 'ff:fe' in the address
this code will tell you if the address is EUI-64

Author: Wido den Hollander <wido@widodh.nl>
*/

public class IPv6 {
    public static void main(String[] args) {
        String address = "fe80::800:27ff:fe00:0";
        IPv6Address addr = IPv6Address.fromString(address);
        byte[] bytes = addr.toByteArray();
        if (bytes[11] == -1 && bytes[12] == -2) {
            System.out.println("True");
        } else {
            System.out.println("False");
        }
    }
}