# Use `ModifySubnetAttribute` with a CLI The following code examples show how to use `ModifySubnetAttribute`. Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example: + [Create a basic VPC](example_vpc_GettingStartedCLI_section.md) ------ #### [ CLI ] **AWS CLI** **To change a subnet's public IPv4 addressing behavior** This example modifies subnet-1a2b3c4d to specify that all instances launched into this subnet are assigned a public IPv4 address. If the command succeeds, no output is returned. Command: ``` aws ec2 modify-subnet-attribute --subnet-id subnet-1a2b3c4d --map-public-ip-on-launch ``` **To change a subnet's IPv6 addressing behavior** This example modifies subnet-1a2b3c4d to specify that all instances launched into this subnet are assigned an IPv6 address from the range of the subnet. Command: ``` aws ec2 modify-subnet-attribute --subnet-id subnet-1a2b3c4d --assign-ipv6-address-on-creation ``` For more information, see IP Addressing in Your VPC in the *AWS Virtual Private Cloud User Guide*. + For API details, see [ModifySubnetAttribute](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/modify-subnet-attribute.html) in *AWS CLI Command Reference*. ------ #### [ PowerShell ] **Tools for PowerShell V4** **Example 1: This example enables public IP addressing for the specified subnet.** ``` Edit-EC2SubnetAttribute -SubnetId subnet-1a2b3c4d -MapPublicIpOnLaunch $true ``` **Example 2: This example disables public IP addressing for the specified subnet.** ``` Edit-EC2SubnetAttribute -SubnetId subnet-1a2b3c4d -MapPublicIpOnLaunch $false ``` + For API details, see [ModifySubnetAttribute](https://docs.aws.amazon.com/powershell/v4/reference) in *AWS Tools for PowerShell Cmdlet Reference (V4)*. **Tools for PowerShell V5** **Example 1: This example enables public IP addressing for the specified subnet.** ``` Edit-EC2SubnetAttribute -SubnetId subnet-1a2b3c4d -MapPublicIpOnLaunch $true ``` **Example 2: This example disables public IP addressing for the specified subnet.** ``` Edit-EC2SubnetAttribute -SubnetId subnet-1a2b3c4d -MapPublicIpOnLaunch $false ``` + For API details, see [ModifySubnetAttribute](https://docs.aws.amazon.com/powershell/v5/reference) in *AWS Tools for PowerShell Cmdlet Reference (V5)*. ------ For a complete list of AWS SDK developer guides and code examples, see [Create Amazon EC2 resources using an AWS SDK](sdk-general-information-section.md). This topic also includes information about getting started and details about previous SDK versions.