# IpAddressType

What kind of addresses to allocate to the load balancer.

- Source: [`aws-elasticloadbalancingv2/lib/shared/enums.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0/packages/aws-cdk-lib/aws-elasticloadbalancingv2/lib/shared/enums.ts#L4)
- Type last changed: v2.159.0 · 19 Sep 2024

## Example

```ts
declare const vpc: ec2.Vpc;

const lb = new elbv2.NetworkLoadBalancer(this, 'LB', {
  vpc,
  ipAddressType: elbv2.IpAddressType.DUAL_STACK,
  enablePrefixForIpv6SourceNat: true,
});

const listener = lb.addListener('Listener', {
  port: 1229,
  protocol: elbv2.Protocol.UDP,
});
```

## Members

| Member | Description |
| --- | --- |
| `IPV4` | Allocate IPv4 addresses. |
| `DUAL_STACK` | Allocate both IPv4 and IPv6 addresses. |
| `DUAL_STACK_WITHOUT_PUBLIC_IPV4` | IPv6 only public addresses, with private IPv4 and IPv6 addresses. |

## Referenced by

- [`ApplicationLoadBalancedServiceBaseProps`](/v2/docs/aws-cdk-lib.aws_ecs_patterns.ApplicationLoadBalancedServiceBaseProps).ipAddressType
- [`ApplicationLoadBalancer`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.ApplicationLoadBalancer).ipAddressType
- [`ApplicationLoadBalancerProps`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.ApplicationLoadBalancerProps).ipAddressType
- [`IApplicationLoadBalancer`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.IApplicationLoadBalancer).ipAddressType
- [`INetworkLoadBalancer`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.INetworkLoadBalancer).ipAddressType
- [`NetworkLoadBalancedServiceBaseProps`](/v2/docs/aws-cdk-lib.aws_ecs_patterns.NetworkLoadBalancedServiceBaseProps).ipAddressType
- [`NetworkLoadBalancer`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.NetworkLoadBalancer).ipAddressType
- [`NetworkLoadBalancerProps`](/v2/docs/aws-cdk-lib.aws_elasticloadbalancingv2.NetworkLoadBalancerProps).ipAddressType