/#Action=ModifySubnetAttribute
http://ec2.{region}.amazonaws.com/#Action=ModifySubnetAttribute<p>Modifies a subnet attribute. You can only modify one attribute at a time.</p> <p>Use this action to modify subnets on Amazon Web Services Outposts.</p> <ul> <li> <p>To modify a subnet on an Outpost rack, set both <code>MapCustomerOwnedIpOnLaunch</code> and <code>CustomerOwnedIpv4Pool</code>. These two parameters act as a single attribute.</p> </li> <li> <p>To modify a subnet on an Outpost server, set either <code>EnableLniAtDeviceIndex</code> or <code>DisableLniAtDeviceIndex</code>.</p> </li> </ul> <p>For more information about Amazon Web Services Outposts, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.com/outposts/latest/userguide/how-servers-work.html">Outpost servers</a> </p> </li> <li> <p> <a href="https://docs.aws.amazon.com/outposts/latest/userguide/how-racks-work.html">Outpost racks</a> </p> </li> </ul>
Query Params
<p>Specify <code>true</code> to indicate that network interfaces created in the specified subnet should be assigned an IPv6 address. This includes a network interface that's created when launching an instance into the subnet (the instance therefore receives an IPv6 address). </p> <p>If you enable the IPv6 addressing feature for your subnet, your network interface or instance only receives an IPv6 address if it's created using version <code>2016-11-15</code> or later of the Amazon EC2 API.</p>
Specify <code>true</code> to indicate that network interfaces attached to instances created in the specified subnet should be assigned a public IPv4 address.
The ID of the subnet.
<p>Specify <code>true</code> to indicate that network interfaces attached to instances created in the specified subnet should be assigned a customer-owned IPv4 address.</p> <p>When this value is <code>true</code>, you must specify the customer-owned IP pool using <code>CustomerOwnedIpv4Pool</code>.</p>
<p>The customer-owned IPv4 address pool associated with the subnet.</p> <p>You must set this value when you specify <code>true</code> for <code>MapCustomerOwnedIpOnLaunch</code>.</p>
Indicates whether DNS queries made to the Amazon-provided DNS Resolver in this subnet should return synthetic IPv6 addresses for IPv4-only destinations.
The type of hostname to assign to instances in the subnet at launch. For IPv4-only and dual-stack (IPv4 and IPv6) subnets, an instance DNS name can be based on the instance IPv4 address (ip-name) or the instance ID (resource-name). For IPv6 only subnets, an instance DNS name must be based on the instance ID (resource-name).
Indicates whether to respond to DNS queries for instance hostnames with DNS A records.
Indicates whether to respond to DNS queries for instance hostnames with DNS AAAA records.
Indicates the device position for local network interfaces in this subnet. For example, <code>1</code> indicates local network interfaces in this subnet are the secondary network interface (eth1). A local network interface cannot be the primary network interface (eth0).
Specify <code>true</code> to indicate that local network interfaces at the current position should be disabled.
Responses
{
"success": true,
"data": {
"id": "abc123",
"created_at": "2025-01-01T00:00:00Z"
}
}{
"success": false,
"error": {
"code": "VALIDATION_ERROR",
"message": "Invalid request parameters"
}
}1curl --request GET \2 --url 'http://ec2.{region}.amazonaws.com/#Action=ModifySubnetAttribute' \3 --header 'accept: application/json' \4 --header 'content-type: application/json'1{2 "success": true,3 "data": {4 "id": "abc123",5 "created_at": "2025-01-01T00:00:00Z"6 }7}