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* Enhance network policy to isolate synced workload pods and improve cross-cluster pod isolation handling * Add test for label update on synced Pod to ensure isolation label persistence * Derive host pod CIDRs dynamically for the isolation NetworkPolicy Compute the egress-exclude CIDRs from the --cluster-cidr flag or the live Node PodCIDR(s) via FindPodCIDRs, instead of a hardcoded guess, so cross-cluster pod isolation is enforced against the host's real pod network. Adds unit, integration, and e2e coverage. * update comment * Sort CIDR list in FindPodCIDRs function to ensure consistent order for egress rules * Use `t.Context()` instead of `context.Background()` Co-authored-by: Kevin McDermott <bigkevmcd@gmail.com> * Use Ginkgo provided context * Refactor FindPodCIDRs to use sets for CIDR collection and simplify logic * fix lint --------- Co-authored-by: Kevin McDermott <bigkevmcd@gmail.com>