How to whitelist an IPv6 address in VPC security groups on AWS?

Solution 1:

Had this same problem. According to this post: IPv4 and IPv6 from different browsers on same computer, many ISPs provide both IPv4 and IPv6. If you go to a site like http://ip-lookup.net/ (or Google for what is my IPv4? ), it'll show you your IPv4 address if it is available. You can then use that to add to the EC2 whitelist. Hope this helps.

Solution 2:

So, weird solution was to not go through the VPC secrurity settings. Leaving my own answer in case anyone else is baffled. Also, this is specific to enabling inbound traffic for a DB. If I go via my RDB instance's "details" tab and click on the security group, a new dropdown is available for custom or "my ip" which worked. No idea why this modal dialog is not available in the VPC security settings. Seems like an oversight or defect in the AWS console.