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You can set up packet mirroring in a Shared VPC setting by following the steps described in the GCP Packet Mirroring documentation.
Intranode visibility
You can setup packet mirroring to show intranode visibility (internal to containers)
https://cloud.google.com/kubernetes-engine/docs/how-to/intranode-visibility?hl=en
Verify Setup
If Blue Hexagon and Packet Mirroring are setup correctly, you will see observations in the Blue Hexagon portal from the gcp appliance in the Discover view as shown below.
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