Currently neither RHcloud nor Heroku can be accessed by IPv6 — probably because AWS doesn't support.
AWS does support it if you add an ELB, for $18/mo. but I suspect I can't configure one myself to point to heroku/rhcloud machines(?)]
Neither do Github Pages (fronted by Fastly).
Cheaper options are:
Host myself on Digital Ocean
Run a Digital Ocean $5 instance forwarding IPv6->IPv4.
Currently neither RHcloud nor Heroku can be accessed by IPv6 — probably because AWS doesn't support. AWS does support it if you add an ELB, for $18/mo. but I suspect I can't configure one myself to point to heroku/rhcloud machines(?)]
Neither do Github Pages (fronted by Fastly).
Cheaper options are: