import { EndpointParameterInstructions } from "@aws-sdk/middleware-endpoint";
import { Command as $Command } from "@aws-sdk/smithy-client";
import { Handler, HttpHandlerOptions as __HttpHandlerOptions, MetadataBearer as __MetadataBearer, MiddlewareStack } from "@aws-sdk/types";
import { EC2ClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../EC2Client";
import { CreateSubnetRequest, CreateSubnetResult } from "../models/models_2";
/**
 * @public
 *
 * The input for {@link CreateSubnetCommand}.
 */
export interface CreateSubnetCommandInput extends CreateSubnetRequest {
}
/**
 * @public
 *
 * The output of {@link CreateSubnetCommand}.
 */
export interface CreateSubnetCommandOutput extends CreateSubnetResult, __MetadataBearer {
}
/**
 * @public
 * <p>Creates a subnet in the specified VPC. For an IPv4 only subnet, specify an IPv4 CIDR block.
 *             If the VPC has an IPv6 CIDR block, you can create an IPv6 only subnet or a dual stack subnet instead.
 *             For an IPv6 only subnet, specify an IPv6 CIDR block. For a dual stack subnet, specify both
 *             an IPv4 CIDR block and an IPv6 CIDR block.</p>
 *          <p>A subnet CIDR block must not overlap the CIDR block of an existing subnet in the VPC.
 *             After you create a subnet, you can't change its CIDR block.</p>
 *          <p>The allowed size for an IPv4 subnet is between a /28 netmask (16 IP addresses) and
 *             a /16 netmask (65,536 IP addresses). Amazon Web Services reserves both the first four and
 *             the last IPv4 address in each subnet's CIDR block. They're not available for your use.</p>
 *          <p>If you've associated an IPv6 CIDR block with your VPC, you can associate an IPv6 CIDR block
 *             with a subnet when you create it. The allowed block size for an IPv6 subnet is a /64 netmask.</p>
 *          <p>If you add more than one subnet to a VPC, they're set up in a star topology with a
 *             logical router in the middle.</p>
 *          <p>When you stop an instance in a subnet, it retains its private IPv4 address. It's
 *             therefore possible to have a subnet with no running instances (they're all stopped), but
 *             no remaining IP addresses available.</p>
 *          <p>For more information, see <a href="https://docs.aws.amazon.com/vpc/latest/userguide/configure-subnets.html">Subnets</a> in the <i>Amazon Virtual Private Cloud User Guide</i>.</p>
 * @example
 * Use a bare-bones client and the command you need to make an API call.
 * ```javascript
 * import { EC2Client, CreateSubnetCommand } from "@aws-sdk/client-ec2"; // ES Modules import
 * // const { EC2Client, CreateSubnetCommand } = require("@aws-sdk/client-ec2"); // CommonJS import
 * const client = new EC2Client(config);
 * const input = { // CreateSubnetRequest
 *   TagSpecifications: [ // TagSpecificationList
 *     { // TagSpecification
 *       ResourceType: "capacity-reservation" || "client-vpn-endpoint" || "customer-gateway" || "carrier-gateway" || "coip-pool" || "dedicated-host" || "dhcp-options" || "egress-only-internet-gateway" || "elastic-ip" || "elastic-gpu" || "export-image-task" || "export-instance-task" || "fleet" || "fpga-image" || "host-reservation" || "image" || "import-image-task" || "import-snapshot-task" || "instance" || "instance-event-window" || "internet-gateway" || "ipam" || "ipam-pool" || "ipam-scope" || "ipv4pool-ec2" || "ipv6pool-ec2" || "key-pair" || "launch-template" || "local-gateway" || "local-gateway-route-table" || "local-gateway-virtual-interface" || "local-gateway-virtual-interface-group" || "local-gateway-route-table-vpc-association" || "local-gateway-route-table-virtual-interface-group-association" || "natgateway" || "network-acl" || "network-interface" || "network-insights-analysis" || "network-insights-path" || "network-insights-access-scope" || "network-insights-access-scope-analysis" || "placement-group" || "prefix-list" || "replace-root-volume-task" || "reserved-instances" || "route-table" || "security-group" || "security-group-rule" || "snapshot" || "spot-fleet-request" || "spot-instances-request" || "subnet" || "subnet-cidr-reservation" || "traffic-mirror-filter" || "traffic-mirror-session" || "traffic-mirror-target" || "transit-gateway" || "transit-gateway-attachment" || "transit-gateway-connect-peer" || "transit-gateway-multicast-domain" || "transit-gateway-policy-table" || "transit-gateway-route-table" || "transit-gateway-route-table-announcement" || "volume" || "vpc" || "vpc-endpoint" || "vpc-endpoint-connection" || "vpc-endpoint-service" || "vpc-endpoint-service-permission" || "vpc-peering-connection" || "vpn-connection" || "vpn-gateway" || "vpc-flow-log" || "capacity-reservation-fleet" || "traffic-mirror-filter-rule" || "vpc-endpoint-connection-device-type" || "verified-access-instance" || "verified-access-group" || "verified-access-endpoint" || "verified-access-policy" || "verified-access-trust-provider" || "vpn-connection-device-type" || "vpc-block-public-access-exclusion" || "ipam-resource-discovery" || "ipam-resource-discovery-association",
 *       Tags: [ // TagList
 *         { // Tag
 *           Key: "STRING_VALUE",
 *           Value: "STRING_VALUE",
 *         },
 *       ],
 *     },
 *   ],
 *   AvailabilityZone: "STRING_VALUE",
 *   AvailabilityZoneId: "STRING_VALUE",
 *   CidrBlock: "STRING_VALUE",
 *   Ipv6CidrBlock: "STRING_VALUE",
 *   OutpostArn: "STRING_VALUE",
 *   VpcId: "STRING_VALUE", // required
 *   DryRun: true || false,
 *   Ipv6Native: true || false,
 * };
 * const command = new CreateSubnetCommand(input);
 * const response = await client.send(command);
 * ```
 *
 * @param CreateSubnetCommandInput - {@link CreateSubnetCommandInput}
 * @returns {@link CreateSubnetCommandOutput}
 * @see {@link CreateSubnetCommandInput} for command's `input` shape.
 * @see {@link CreateSubnetCommandOutput} for command's `response` shape.
 * @see {@link EC2ClientResolvedConfig | config} for EC2Client's `config` shape.
 *
 *
 * @example To create a subnet
 * ```javascript
 * // This example creates a subnet in the specified VPC with the specified CIDR block. We recommend that you let us select an Availability Zone for you.
 * const input = {
 *   "CidrBlock": "10.0.1.0/24",
 *   "VpcId": "vpc-a01106c2"
 * };
 * const command = new CreateSubnetCommand(input);
 * const response = await client.send(command);
 * /* response ==
 * {
 *   "Subnet": {
 *     "AvailabilityZone": "us-west-2c",
 *     "AvailableIpAddressCount": 251,
 *     "CidrBlock": "10.0.1.0/24",
 *     "State": "pending",
 *     "SubnetId": "subnet-9d4a7b6c",
 *     "VpcId": "vpc-a01106c2"
 *   }
 * }
 * *\/
 * // example id: ec2-create-subnet-1
 * ```
 *
 */
export declare class CreateSubnetCommand extends $Command<CreateSubnetCommandInput, CreateSubnetCommandOutput, EC2ClientResolvedConfig> {
    readonly input: CreateSubnetCommandInput;
    static getEndpointParameterInstructions(): EndpointParameterInstructions;
    /**
     * @public
     */
    constructor(input: CreateSubnetCommandInput);
    /**
     * @internal
     */
    resolveMiddleware(clientStack: MiddlewareStack<ServiceInputTypes, ServiceOutputTypes>, configuration: EC2ClientResolvedConfig, options?: __HttpHandlerOptions): Handler<CreateSubnetCommandInput, CreateSubnetCommandOutput>;
    /**
     * @internal
     */
    private serialize;
    /**
     * @internal
     */
    private deserialize;
}
