@Test
public void onIpv6PacketReceivedNullInputTest2() throws Exception {

    ArrayList<PacketChain> packetChainList = new ArrayList<PacketChain>();
    packetChainList.add(new PacketChainBuilder().setPacket(new RawPacketBuilder().build()).build());
    packetChainList.add(new PacketChainBuilder()
            .setPacket(new EthernetPacketBuilder().setSourceMac(new MacAddress("aa:bb:cc:dd:ee:ff")).build())
            .build());
    Ipv6PacketReceived ipv6PktReceived = new Ipv6PacketReceivedBuilder().setPacketChain(packetChainList).build();
    AddressObserverUsingIpv6 addressObserverIpv6 = new AddressObserverUsingIpv6(addressObservationWriterMock);
    addressObserverIpv6.onIpv6PacketReceived(ipv6PktReceived);
    verify(addressObservationWriterMock, times(0)).addAddress(any(MacAddress.class), any(IpAddress.class),
            any(NodeConnectorRef.class));
}