Problematic section of the documentation:
    3.5.9. Installing RHCOS and starting the OpenShift Container Platform bootstrap process
         9. After the template deploys, deploy a VM for a machine in the cluster.
    https://docs.redhat.com/en/documentation/openshift_container_platform_installation/4.17/html/installing_on_vsphere/user-provisioned-infrastructure#installation-vsphere-machines_installing-restricted-networks-vsphere

Issue:
    We show the following example in the documentation:

        export IPCFG="ip=<ip>::<gateway>:<netmask>:<hostname>:<iface>:none nameserver=srv1 [nameserver=srv2 [nameserver=srv3 [...]]]"

        export IPCFG="ip=192.168.100.101::192.168.100.254:255.255.255.0:::none nameserver=8.8.8.8"

    The problem is the interface `none`. In case the interface is set to none, everything works well until a secondary interface is added to the node as Day-2 operation. It cases the node not reachable. The issue is explained int KCS:
        Adding a secondary network interface to an OpenShift node causes the node IP to switch to the second interface
        https://access.redhat.com/solutions/6990481

4.17

100%

A warning or a different example is in the documentation.