In practice, IPv6 isn't supported on AWS. See for example: https://www.quora.com...

		sandstrom on Jan 4, 2016 \| parent \| context \| favorite \| on: IPv6 celebrates its 20th birthday by reaching 10% ... In practice, IPv6 isn't supported on AWS. See for example: https://www.quora.com/Does-Amazon-Web-Services-support-IPv6 https://www.quora.com/Why-doesnt-AWS-EC2-support-IPv6

I see. Well, that sucks.