OVN-Kubernetes ignores host routes for outgoing traffic

Solution Verified - Updated -

Issue

  • With OVN-Kubernetes, traffic from pods to external systems always egresses via default network interface, regardless of the routing table.
  • OVN-Kubernetes ignores host routing table for egress traffic.
  • It is not possible to reach external systems via secondary NICs from pods with OVN-Kubernetes.

Environment

  • Red Hat OpenShift Container Platform
    • 4.10 and higher

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