Feature: Generate Network Policy Rules

[danieljkemp]

Cilium Feature Proposal

Is your feature request related to a problem?

No, but it might be a useful feature

Describe the feature you'd like

Generate allow-list network policies based on traffic detected by hubble

(Optional) Describe your proposed solution

When running hubble observe, we can build a model of the network traffic, and with that information, generate a minimal network policy that would allow it.

potentially related: #1100 ?