@Test
public void bigIntegerToIpTest() {

    BigInteger start = new BigInteger("42550872755692912415807417417958686721");
    Assert.assertEquals("longToIp Test 1: convert of 42550872755692912415807417417958686721 failed",
            "2003:0:0:0:0:0:0:1", NeutronSubnetIpAllocationPool.bigIntegerToIp(start));
}