[OVN] Multi-homed node - No Route From POD network to second NIC network

Solution Verified - Updated -

Issue

  • After upgrading from 4.7.z to 4.8.z, RHOCP cluster doesn't provide the expected routing path from POD internal network to external networks through secondaries NICs on RHOCP nodes.

Environment

  • Red Hat Openshift Container Platform (RHOCP)
    • 4.8.z
    • 4.9.z
  • OVN-Kubernetes
  • RHOCP nodes with multiple NIC configuration (Multi-homed node)

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