func fillPortFields(d *schema.ResourceData, aclRule *cloudca.NetworkAclRule) {
	if v, ok := d.GetOk("start_port"); ok {
		aclRule.StartPort = strconv.Itoa(v.(int))
	}
	if v, ok := d.GetOk("end_port"); ok {
		aclRule.EndPort = strconv.Itoa(v.(int))
	}
}