public MacAddress encapEthDst() {
        return encapEthDst;
    }
@Test
    public void testConstruction() {
        final NiciraEncapEthDst encapEthDst1 = new NiciraEncapEthDst(mac1);
        assertThat(encapEthDst1, is(notNullValue()));
        assertThat(encapEthDst1.encapEthDst(), is(mac1));
    }