Which EC2 types support IPv6?

Question

Hey, I got this error when attempting to migrate to IPv6 to not be charged for a public IPv4 I don't really need.

"Failed to attach network interface eni- to instance i-. IPv6 addresses are not supported on t2.micro"

which contradicts the documentation: [https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html) that says t2.micro does support it.

Steps I took:

I modified my VPC by adding a new IPv6 CIDR block.

I created a new IPv6 only Subnet for the same Availability Zone as my EC2 instance.

I created a new Network Interface using the new Subnet.

I attempted to Attach the new NI to my existing EC2 t2.micro instance.

I got the error.

Since it isn't working, I wanted to ask which instance types DO support it before doing all the work to resetup my server on a new instance type. I can upgrade to a new t2.small instance or to a t3.micro instance, but I don't know how to tell which types will support it since the documentation is wrong.

Answer

Hello

[Instance types](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html): IPv6 is supported on all instance types, except C1, M1, M2, M3, and T1.

you can also see  [Elastic network interfaces](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html), T2 family ec2 support IPv6

![Enter image description here](/media/postImages/original/IMlc0xTaHbSlCenr7wjOk0gg)

Answer

Hello,
If you want to use an IPv6-only EC2 instance, you need to use instance types based on nitro. For specific details, please refer to this documentation.

[+] Introducing IPv6-only subnets and EC2 instances  https://aws.amazon.com/cn/blogs/networking-and-content-delivery/introducing-ipv6-only-subnets-and-ec2-instances/

[+] Instances built on the AWS Nitro System - https://docs.aws.amazon.com/zh_cn/ec2/latest/instancetypes/ec2-nitro-instances.html

Answer

Hello.

You can also add IPv6 using t2.micro by following the steps below.  
https://docs.aws.amazon.com/vpc/latest/userguide/vpc-migrate-ipv6.html  
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-instance-addressing.html#working-with-ipv6-addresses  
![a](/media/postImages/original/IM9jGETwAQQn-28I7dfOehAQ)

Therefore, I think there is a problem with the following procedure, which involves moving to a different subnet.  
> I created a new Network Interface using the new Subnet.
> 
> I attempted to Attach the new NI to my existing EC2 t2.micro instance.

Which EC2 types support IPv6?

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