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  1. OpenShift Bugs
  2. OCPBUGS-28818

[4.15.z] Azure - OCP IPI Installation UDP packets are subject to SNAT with LB Service using ETP equals to Local (OVN-Kubernetes as CNI)

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    • SDN Sprint 246, SDN Sprint 247, SDN Sprint 248, SDN Sprint 249
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    • Network
    • customers who need session affinity

      UDP Packets are subject to SNAT in a self-managed OCP 4.13.13 cluster on Azure (OVN-K as CNI) using a Load Balancer Service with `externalTrafficPolicy: Local`. UDP Packets correctly arrive to the Node hosting the Pod but the source IP seen by the Pod is the OVN GW Router of the Node.

      I've reproduced the customer scenario with the following steps:

      This is issue is very critical because it is blocking customer business.

            sseethar Surya Seetharaman
            rhn-support-gizzi Giovanni Luca Izzi
            Arti Sood Arti Sood
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              Created:
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