Bug: Certificate DNS Error

[ssandino]

Problem: Users accessing opensource.admin.ch don't get redirected to www.opensource.admin.ch because opensource.admin.ch does a certificate with an invalid common name.

[LouisBernath]

opensource.admin.ch: certificate CN *.github.io . <--- invalid
opensource.admin.ch CNAME swiss.github.io.

www.opensource.admin.ch: certificate CN www.opensource.admin.ch
www.opensource.admin.ch CNAME opensource.admin.ch.

it is unclear if our dns setup is unsupported or wrong for our redirection scenario.
i posted the question here community/community#180560