This is a clone of issue OCPBUGS-24356. The following is the description of the original issue:
—

Description of problem:

After updating the cluster to 4.12.42 (from 4.12.15), the customer noticed some issues for the scheduled PODs to start on the node.

The initial thought was a multus issue, and then we realised that the script /usr/local/bin/configure-ovs.sh was modified and reverting the modification fixed the issue.

Modification:

>     if nmcli connection show "$vlan_parent" &> /dev/null; then
>       # if the VLAN connection is configured with a connection UUID as parent, we need to find the underlying device
>       # and create the bridge against it, as the parent connection can be replaced by another bridge.
>       vlan_parent=$(nmcli --get-values GENERAL.DEVICES conn show ${vlan_parent})
>     fi

Reference:

• PR 3768
• Jira Bug OCPBUGS-15570

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

4.12.42

How reproducible:

Should be reproducible by setting inactive nmcli connections with the same names as the active once

Steps to Reproduce:

Not tested, but this should be something like
1. create inactive same nmcli connections
2. run the script

Actual results:

Script failing

Expected results:

Script should manage the connection using the UUID instead of using the Name.
Or maybe it's an underline issue how nmcli is managing the relationship between objects.

Additional info:

The issue may be related to the way that nmcli is working, as it should use the UUID to match the `vlan.parent` as it does with the `connection.master`