This is a clone of issue
OCPBUGS-12729. The following is the description of the original issue:
Description of problem:
This came out of the investigation of https://issues.redhat.com/browse/OCPBUGS-11691 . The nested node configs used to support dual stack VIPs do not correctly respect the EnableUnicast setting. This is causing issues on EUS upgrades where the unicast migration cannot happen until all nodes are on 4.12. This is blocking both the workaround and the eventual proper fix.
Version-Release number of selected component (if applicable):
Steps to Reproduce: