The Cluster-dns-operator, the Router, and openshift/coreDNS need to use kube 1.19 dependencies in go.mod. The DNS operator and the router are on kube 1.18 deps, while openshift/coreDNS's kube deps are pinned to commits from 2019.
test with 4.6.0-0.nightly-2020-09-23-022756 and no regression issue found
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 (OpenShift Container Platform 4.6 GA Images), 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/RHBA-2020:4196