def METHOD_NAME(self):
    network = NetworkFactory(address='192.168.1.0/24')
    ethernet = EthernetFactory()
    ip = IPAddressFactory(address='192.168.1.2', ethernet=ethernet)
    ethernet.save()
    returned = self.view.get_last_modified(
        Network.objects.filter(id__in=[network.id])
    )
    self.assertEqual(
        returned.strftime("%Y-%m-%d %H:%M:%S"),
        ethernet.modified.strftime("%Y-%m-%d %H:%M:%S")
    )