feat(elasticloadbalancingv2): dualstack NetworkLoadBalancer

[lpizzinidev]

Adds support for dual-stack NetworkLoadBalancer via the ipAddressType property.

Example:

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

Also, added validation to enforce that UDP or TCP_UDP listeners cannot be added to a dualstack NLB.

Closes #27538.

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[jaredlundell]

Dualstack NLBs are not required to be internet-facing. The only requirement is that the subnets it is placed in support IPv6. See https://docs.aws.amazon.com/elasticloadbalancing/latest/network/load-balancer-ip-address-type.html

[lpizzinidev]

@jaredlundell
Thanks for the feedback.
I added the validation because of the helper shown on the console when creating a NLB:

If the load balancer is an internal load balancer, or if you add a UDP or TCP_UDP listener, you must choose IPv4.

Not sure if I misinterpreted it or if there is a documentation inconsistency.

[laurelmay]

This is really cool to have! Thanks for the work on this!

[jaredlundell]

Looks like that help info in the console is incorrect. Here's a screenshot from the console of an Internal, Dualstack NLB, so it's definitely possible:

[lpizzinidev]

@jaredlundell
👍 I'll adapt the implementation, thanks!

[aws-cdk-automation]

This PR has been in the MERGE CONFLICTS state for 3 weeks, and looks abandoned. To keep this PR from being closed, please continue work on it. If not, it will automatically be closed in a week.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

Pull request has been modified.

[sumupitchayan]

@Mergifyio update

[mergify]

update

❌ Mergify doesn't have permission to update

For security reasons, Mergify can't update this pull request. Try updating locally.
GitHub response: refusing to allow a GitHub App to create or update workflow .github/workflows/github-merit-badger.yml without workflows permission

[kaizencc]

Was previously approved

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

Pull request has been modified.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 8fea2a3
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).