Add IPv6 support to your VPC

Question

Hi re:Post Community, please I need some assistance.

I am currently trying to add IPv6 support to my VPC and I was wondering which option to select in the "Edit CIDRs" section.

After clicking on "Add new IPv6 CIDR"![edit IPv6 CIDR](/media/postImages/original/IMZfoTwdRYRCuCOAEYyvxgMA), I am asked to select one of the following options between : IPAM-allocated IPv6 CIDR block, Amazon-provided IPv6 CIDR block, and IPv6 CIDR owned by me. ![Add IPv6 CIDR](/media/postImages/original/IM0tURhYKqTlO-yjb7B-5_LQ)
Please I would like to know what is the best option to select as I am not quite familiar with a lot of these terminologies.

Answer

Hello.

Basically, there should be no problem if you select "Amazon-provided IPv6 CIDR block".  
"Amazon-provided IPv6 CIDR block" is automatically assigned from the IPv6 CIDR range managed by AWS, so users who do not have an IPv6 address will basically select this.  
https://docs.aws.amazon.com/vpc/latest/userguide/modify-vpcs.html#vpc-associate-ipv6-cidr

"IPv6 CIDR owned by me" is an option when using a user-owned IPv6 CIDR.  
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-byoip.html

IPAM is an abbreviation for "Amazon VPC IP Address Manager" and is a function for managing IP addresses.  
You can select to use an IP address CIDR owned by a user linked to IPAM.  
https://docs.aws.amazon.com/vpc/latest/ipam/what-it-is-ipam.html

Add IPv6 support to your VPC

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