We still have some code related to the `IPv6DualStack` feature gate, even though it doesn't do anything any more (since the feature is GA and thus the feature gate is always enabled and can't be disabled).
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Important: OpenShift Container Platform 4.11.0 bug fix and security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2022:5069