> **Experimental**
>
> `@aws-cdk/aws-ec2-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# AddressFamily

Represents the address family for IP addresses in an IPAM pool.

IP_V4 - Represents the IPv4 address family.
IP_V6 - Represents the IPv6 address family.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/ipam.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-ec2-alpha/lib/ipam.ts#L13)

## Example

```ts
const stack = new Stack();
const ipam = new Ipam(this, 'Ipam', {
  operatingRegions: ['us-west-1']
});
const ipamPublicPool = ipam.publicScope.addPool('PublicPoolA', {
  addressFamily: AddressFamily.IP_V6,
  awsService: AwsServiceName.EC2,
  locale: 'us-west-1',
  publicIpSource: IpamPoolPublicIpSource.AMAZON,
});
ipamPublicPool.provisionCidr('PublicPoolACidrA', { netmaskLength: 52 } );

const ipamPrivatePool = ipam.privateScope.addPool('PrivatePoolA', {
  addressFamily: AddressFamily.IP_V4,
});
ipamPrivatePool.provisionCidr('PrivatePoolACidrA', { netmaskLength: 8 } );

new VpcV2(this, 'Vpc', {
  primaryAddressBlock: IpAddresses.ipv4('10.0.0.0/24'),
  secondaryAddressBlocks: [
    IpAddresses.amazonProvidedIpv6({ cidrBlockName: 'AmazonIpv6' }),
    IpAddresses.ipv6Ipam({
      ipamPool: ipamPublicPool,
      netmaskLength: 52,
      cidrBlockName: 'ipv6Ipam',
    }),
    IpAddresses.ipv4Ipam({
      ipamPool: ipamPrivatePool,
      netmaskLength: 8,
      cidrBlockName: 'ipv4Ipam',
    }),
  ],
});
```

## Members

| Member | Description |
| --- | --- |
| `IP_V4` | Represents the IPv4 address family. |
| `IP_V6` | Represents the IPv6 address family. |

## Referenced by

- [`PoolOptions`](/v2/docs/@aws-cdk_aws-ec2-alpha.PoolOptions).addressFamily