https://docs.openshift.com/container-platform/4.12/installing/disconnected_install/installing-mirroring-disconnected.html#prerequisites_installing-mirroring-disconnected

In the prerequisites section there is a note that has a proof-of-concept link that does not work (see text extract below):

If you use Red Hat Quay, you must use version 3.6 or later with the oc-mirror plugin. If you have an entitlement to Red Hat Quay, see the documentation on deploying Red Hat Quay for proof-of-concept purposes or by using the Red Hat Quay Operator. If you need additional assistance selecting and installing a registry, contact your sales representative or Red Hat Support.

    UNK

    Every time

    1. Go to page
    2. Go to section
    3. Click on "for proof-of-concept purposes" hyperlink

    404
PAGE NOT FOUND

    proper redirect