Synnefo

        network = util.get_network(network_id, userid, for_update=True,

                                   non_deleted=True)

        if not network.floating_ip_pool:

        address = api.utils.get_attribute(floating_ip_dict,

                                          "floating_ip_address",

def allocate_ip(network, userid, address=None, floating_ip=False):

    """Try to allocate an IP from networks IP pools."""

    ip_pools = IPPoolTable.objects.select_for_update()\

        .filter(subnet__network=network)

    try:

    ip_pool_rows = IPPoolTable.objects.select_for_update()\

        .prefetch_related("subnet__network")\

        .filter(subnet__deleted=False)\

        .filter(subnet__network__public=True)\

        .filter(subnet__network__drained=False)

    if floating_ip:

        raise faults.Conflict(msg)

    network.action = "DESTROY"

    network.save()

    # Delete network to all backends that exists

    if network.state != "ACTIVE":

        raise faults.BuildInProgress("Can not create port while network is in"

                                     " state %s" % network.state)

    ipaddress = None

    if use_ipaddress is not None:

        # Use an existing IPAddress object.