Two HostSubnet objects point to the same subnet in openshift-sdn

Solution Unverified - Updated -

Issue

  • Pods placed on 2 different nodes are unreachable or experiment networking glitches.
  • VXLAN communication is allowed cluster-wide, so there is no VXLAN communication problem.
  • At least two HostSubnet objects have the same SUBNET as indicated in "diagnostic steps" section below (otherwise, this solution doesn't apply)

Environment

  • Red Hat OpenShift Container Platform 4.x
  • OpenShift SDN

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