Control: 3.1 Ensure legacy networks does not exist
Description
In order to prevent use of legacy networks, ECS instances should not have a legacy network configured.
Remediation
From Console
- Logon to ECS Console.
 - In the left-side navigation pane, choose 
Instance & Image > Instances. - Click 
Create Instance. - Specify the basic instance information required by following the instruction and click 
Next: Networking. - Select the 
Network TypeofVPC. 
Usage
Run the control in your terminal:
powerpipe control run alicloud_compliance.control.cis_v100_3_1Snapshot and share results via Turbot Pipes:
powerpipe loginpowerpipe control run alicloud_compliance.control.cis_v100_3_1 --shareSQL
This control uses a named query:
select  arn as resource,  case    when instance_network_type = 'vpc' then 'ok'    else 'alarm'  end as status,  case    when instance_network_type = 'vpc' then title || ' has VPC network.'    else title || ' has legacy network.'  end as reason    , account_id as account_id, region as regionfrom  alicloud_ecs_instance;