Description of problem:

Deployment in dev-scripts with IP_STACK=v6v4 is failing with the following error from curl:
curl: (7) Failed to connect to fd00:1101::1 port 80: Connection refused

It looks like we're trying to download the rhcos image and for some reason we're calling an address that doesn't exist (at least in my env).

I think this is just an issue with dev-scripts since it's happening before we even start the deployment, but since this shipped as a supported feature in 4.13 we need to confirm that quickly.

Version-Release number of selected component (if applicable):

How reproducible:

Always

Steps to Reproduce:

1. Deploy dev-scripts with IP_STACK=v6v4
2.
3.

Actual results:

Error downloading rhcos image

Expected results:

Successful deployment of v6-primary cluster

Additional info: