'Delete an existing NAT rule
:param  rule: The rule to delete
:type   rule: :class:`DimensionDataNatRule`
:rtype: ``bool``'

def ex_delete_nat_rule(self, rule):

    update_node = ET.Element('deleteNatRule', {'xmlns': TYPES_URN})
    update_node.set('id', rule.id)
    result = self.connection.request_with_orgId_api_2('network/deleteNatRule', method='POST', data=ET.tostring(update_node)).object
    response_code = findtext(result, 'responseCode', TYPES_URN)
    return (response_code in ['IN_PROGRESS', 'OK'])
