feat(network): add opt-in sentinel isolation and strict policy profile

.github/workflows/ci.yaml

@@ -1257,6 +1257,8 @@ jobs:
         run: python3 charts/tests/check_gateway.py
       - name: standalone panel isolation and persistence chart renders
         run: python3 charts/tests/check_standalone.py
+      - name: strict network profile and sentinel policy selectors
+        run: python3 charts/tests/check_network_isolation.py
       - name: workload security chart contract
         run: python3 charts/tests/check_workload_security.py
       - name: auxiliary resources and management placement chart renders
@@ -1824,9 +1826,13 @@ jobs:
         # (operator does zero logins and is wait-dominated, so it runs
         # wide; the api buckets stay within the login limiter's budget).
         # The arm64 job below uses the same steps and per-bucket settings.
-        bucket: [operator, api-auth, api-roles, api-rbac, api-agent, api-mods, telemetry, optional-components, restricted-workloads, management-placement, backup-preparation]
+        bucket: [operator, api-auth, api-roles, api-rbac, api-agent, api-mods, telemetry, optional-components, restricted-workloads, network-isolation, management-placement, backup-preparation]
         arch: [amd64]
         include:
+          - bucket: network-isolation
+            parallel: 1
+            test_timeout: 15m
+            job_timeout: 60
           - bucket: operator
             parallel: 8
             test_timeout: 20m
@@ -1900,6 +1906,7 @@ jobs:
       - name: bring up cluster + helm install
         if: env.RUN_REGEX != '' || env.TAIL_REGEX != ''
         env:
+          GAMEPLANE_E2E_CNI: ${{ matrix.bucket == 'network-isolation' && 'cilium' || 'kindnet' }}
           GAMEPLANE_E2E_PROFILE: ${{ (matrix.bucket == 'management-placement' || matrix.bucket == 'backup-preparation') && 'management' || 'default' }}
         run: ./deploy/kind/e2e.sh up "$CLUSTER" e2e "$GAMEPLANE_E2E_PROFILE"
       - name: run go e2e (${{ matrix.bucket }})
@@ -2728,7 +2735,7 @@ jobs:
               'go-e2e-unit': (n) => n === 'go (test/e2e)',
               'api-postgres': (n) => n === 'api (postgres)',
               'e2e-buckets': (n) => n === 'e2e bucket coverage',
-              'e2e-go': (n) => /^e2e (operator|api-auth|api-roles|api-rbac|api-agent|api-mods|telemetry|optional-components|restricted-workloads|management-placement|backup-preparation) \//.test(n) && n.includes('/ amd64 '),
+              'e2e-go': (n) => /^e2e (operator|api-auth|api-roles|api-rbac|api-agent|api-mods|telemetry|optional-components|restricted-workloads|network-isolation|management-placement|backup-preparation) \//.test(n) && n.includes('/ amd64 '),
               'e2e-go-arm64': (n) => /^e2e (operator|api-auth|api-roles|api-rbac|api-agent|api-mods|telemetry|optional-components|restricted-workloads) \//.test(n) && n.includes('/ arm64 '),
               'e2e-multicluster': (n) => n.startsWith('e2e multicluster /') && n.includes('/ amd64 '),
               'e2e-multicluster-arm64': (n) => n.startsWith('e2e multicluster /') && n.includes('/ arm64 '),
@@ -2881,7 +2888,7 @@ jobs:
             const bucketSet = new Set();
             for (const j of apiJobs) {
               const n = j.name || '';
-              const m = n.match(/^e2e (operator|api-auth|api-roles|api-rbac|api-agent|api-mods|telemetry|optional-components|restricted-workloads|management-placement|backup-preparation) \//);
+              const m = n.match(/^e2e (operator|api-auth|api-roles|api-rbac|api-agent|api-mods|telemetry|optional-components|restricted-workloads|network-isolation|management-placement|backup-preparation) \//);
               if (m) bucketSet.add(m[1]);
               if (/^e2e multicluster \//.test(n)) bucketSet.add('multicluster');
               if (/^e2e upgrade \//.test(n)) bucketSet.add('upgrade');

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_backups.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: backups.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_backupschedules.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: backupschedules.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_clusters.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: clusters.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_gameservers.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: gameservers.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_gametemplates.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: gametemplates.gameplane.local
 spec:
@@ -2114,6 +2114,12 @@ spec:
                     minimum: 0
                     type: integer
                 type: object
+              sentinelIsolation:
+                description: |-
+                  SentinelIsolation restricts a wake sentinel to its own server's advertised
+                  ports. Templates opt in after module connectivity validation; absent or
+                  false retains the legacy namespace-wide sentinel allowances.
+                type: boolean
               storage:
                 description: Storage describes the default persistent storage layout.
                 properties:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_modules.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: modules.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_modulesources.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: modulesources.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_networkcaptures.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: networkcaptures.gameplane.local
 spec:

charts/gameplane/charts/gameplane-crds/crds/gameplane.local_restores.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: restores.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_backups.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: backups.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_backupschedules.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: backupschedules.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_clusters.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: clusters.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_gameservers.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: gameservers.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_gametemplates.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: gametemplates.gameplane.local
 spec:
@@ -2114,6 +2114,12 @@ spec:
                     minimum: 0
                     type: integer
                 type: object
+              sentinelIsolation:
+                description: |-
+                  SentinelIsolation restricts a wake sentinel to its own server's advertised
+                  ports. Templates opt in after module connectivity validation; absent or
+                  false retains the legacy namespace-wide sentinel allowances.
+                type: boolean
               storage:
                 description: Storage describes the default persistent storage layout.
                 properties:

charts/gameplane/crd-manifests/gameplane.local_modules.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: modules.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_modulesources.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: modulesources.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_networkcaptures.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: networkcaptures.gameplane.local
 spec:

charts/gameplane/crd-manifests/gameplane.local_restores.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    gameplane.local/crd-bundle-sha256: 3839b91bcfc726f69c1df7b23e71af742432cb2dd9b955737f3a274ce3ebb809
+    gameplane.local/crd-bundle-sha256: 98e3825f4571f50622830dbb04e97fdb3e45f8be8bc679259dd17c5d30eec884
     controller-gen.kubebuilder.io/version: v0.22.0
   name: restores.gameplane.local
 spec:

charts/gameplane/templates/networkpolicies.yaml

@@ -331,8 +331,9 @@ spec:
         - { protocol: TCP, port: 443 }
         - { protocol: TCP, port: 6443 }
 ---
-# Allow the sentinel to egress to game pods on advertised ports for the proxy path.
-# This is the INGRESS half only, on the game pod's own selector.
+# Legacy sentinel proxy allowance, ingress half. This grants ALL ports between
+# non-isolated sentinels and games. NetworkPolicies are additive; per-server
+# player ingress does not narrow it. Opted-in templates use operator policies.
 # NetworkPolicy requires both sides to agree: the destination (this policy)
 # admits the sentinel, but default-deny-egress's podSelector: {} still
 # governs the sentinel as a SOURCE and only opens DNS. allow-sentinel-to-game-egress
@@ -349,14 +350,17 @@ spec:
   podSelector:
     matchLabels:
       app.kubernetes.io/name: gameplane-game
+    matchExpressions:
+      - { key: gameplane.local/sentinel-isolation, operator: NotIn, values: ["true"] }
   policyTypes: [Ingress]
   ingress:
     - from:
         - podSelector:
             matchLabels:
               app.kubernetes.io/name: gameplane-waker
-      # All ports; the per-server ingress policy covers which ports are
-      # actually advertised for each server.
+            matchExpressions:
+              - { key: gameplane.local/sentinel-isolation, operator: NotIn, values: ["true"] }
+      # Intentionally unrestricted for templates that have not opted in.
 ---
 # The Egress half of allow-sentinel-to-game (see its comment above): admits
 # the sentinel, as a traffic SOURCE, to reach game pods. Selects the
@@ -374,15 +378,17 @@ spec:
   podSelector:
     matchLabels:
       app.kubernetes.io/name: gameplane-waker
+    matchExpressions:
+      - { key: gameplane.local/sentinel-isolation, operator: NotIn, values: ["true"] }
   policyTypes: [Egress]
   egress:
     - to:
         - podSelector:
             matchLabels:
               app.kubernetes.io/name: gameplane-game
-      # All ports; allow-sentinel-to-game above (the matching ingress half)
-      # and the per-server ingress policy cover which ports are actually
-      # advertised for each server.
+            matchExpressions:
+              - { key: gameplane.local/sentinel-isolation, operator: NotIn, values: ["true"] }
+      # Intentionally unrestricted for templates that have not opted in.
 {{- end }}
 
 {{- end }}

charts/gameplane/templates/validate.yaml

@@ -1,3 +1,31 @@
+{{- $network := .Values.networkPolicies | default dict }}
+{{- if $network.strict }}
+{{- if not $network.enabled }}
+{{- fail "networkPolicies.strict requires networkPolicies.enabled=true" }}
+{{- end }}
+{{- range $key := list "kubeletCIDRs" "apiServerCIDRs" "probePorts" }}
+{{- $entries := index $network $key }}
+{{- if or (not (kindIs "slice" $entries)) (eq (len $entries) 0) }}
+{{- fail (printf "networkPolicies.strict requires a non-empty networkPolicies.%s list" $key) }}
+{{- end }}
+{{- end }}
+{{- $octet := "(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])" }}
+{{- $ipv4 := printf "^%s(\\.%s){3}/([0-9]|[12][0-9]|3[0-2])$" $octet $octet }}
+{{- $h := "[0-9A-Fa-f]{1,4}" }}
+{{- $ipv6 := printf "^((%s:){7}%s|(%s:){1,7}:|(%s:){1,6}:%s|(%s:){1,5}(:%s){1,2}|(%s:){1,4}(:%s){1,3}|(%s:){1,3}(:%s){1,4}|(%s:){1,2}(:%s){1,5}|%s:((:%s){1,6})|:((:%s){1,7}|:))/([0-9]|[1-9][0-9]|1[01][0-9]|12[0-8])$" $h $h $h $h $h $h $h $h $h $h $h $h $h $h $h $h }}
+{{- range $key := list "kubeletCIDRs" "apiServerCIDRs" }}
+{{- range (index $network $key) }}
+{{- if or (not (kindIs "string" .)) (not (or (regexMatch $ipv4 (toString .)) (regexMatch $ipv6 (toString .)))) }}
+{{- fail (printf "networkPolicies.%s entries must be explicit IPv4/IPv6 CIDRs" $key) }}
+{{- end }}
+{{- end }}
+{{- end }}
+{{- range $network.probePorts }}
+{{- if or (not (has (.protocol | default "") (list "TCP" "UDP" "SCTP"))) (not (regexMatch "^[0-9]+$" (toString .port))) (lt (int .port) 1) (gt (int .port) 65535) }}
+{{- fail "networkPolicies.probePorts requires protocol TCP/UDP/SCTP and an integer port from 1 to 65535" }}
+{{- end }}
+{{- end }}
+{{- end }}
 {{- $diagnostics := include "gameplane.nodeDiagnostics" . | fromJson }}
 {{- if $diagnostics.enabled }}
 {{- if or (not .Values.capture.enabled) (ne (include "gameplane.operatorEnabled" .) "true") }}

charts/gameplane/values.yaml

@@ -564,6 +564,9 @@ gamesNamespace: gameplane-games
 
 networkPolicies:
   enabled: true
+  # Fail closed unless actual kubelet source CIDRs/probe ports and apiserver
+  # endpoint CIDRs are supplied. Defaults retain the legacy broad allowances.
+  strict: false
   # CIDRs that hold kubelet source IPs for liveness/readiness probes.
   # If unset, the chart falls back to RFC1918 + link-local ranges,
   # which cover most clusters without opening the public internet.

charts/tests/check_network_isolation.py

@@ -0,0 +1,49 @@
+"""CI-only rendered effective policy tuple and strict-profile regressions."""
+from check_standalone import render, one
+
+
+def main():
+    values = {"networkPolicies": {"strict": True,
+              "kubeletCIDRs": ["192.0.2.10/32"],
+              "probePorts": [{"protocol": "TCP", "port": 8090}],
+              "apiServerCIDRs": ["198.51.100.20/32"]}}
+    objects = render(values)
+    probe = one(objects, "NetworkPolicy", "allow-kubelet-probes")["spec"]["ingress"]
+    assert probe == [{"from": [{"ipBlock": {"cidr": "192.0.2.10/32"}}],
+                      "ports": [{"protocol": "TCP", "port": 8090}]}]
+    for name in ("allow-agent-to-apiserver", "allow-sentinel-to-apiserver"):
+        egress = one(objects, "NetworkPolicy", name)["spec"]["egress"]
+        assert egress == [{"to": [{"ipBlock": {"cidr": "198.51.100.20/32"}}],
+                           "ports": [{"protocol": "TCP", "port": 443}, {"protocol": "TCP", "port": 6443}]}]
+    excluded = [{"key": "gameplane.local/sentinel-isolation", "operator": "NotIn", "values": ["true"]}]
+    for name, direction, peer in (("allow-sentinel-to-game", "ingress", "from"),
+                                 ("allow-sentinel-to-game-egress", "egress", "to")):
+        policy = one(objects, "NetworkPolicy", name)["spec"]
+        assert policy["podSelector"]["matchExpressions"] == excluded
+        assert policy[direction][0][peer][0]["podSelector"]["matchExpressions"] == excluded
+    import copy
+    for key in ("kubeletCIDRs", "apiServerCIDRs", "probePorts"):
+        invalid = copy.deepcopy(values)
+        invalid["networkPolicies"][key] = []
+        render(invalid, failure="requires a non-empty networkPolicies." + key)
+    for cidr in ("", "10.0.0.1", "999.0.0.1/32", "10.0.0.1/33", "2001:::1/64", "2001:db8/64", "::/129"):
+        invalid = copy.deepcopy(values)
+        invalid["networkPolicies"]["apiServerCIDRs"] = [cidr]
+        render(invalid, failure="must be explicit IPv4/IPv6 CIDRs")
+    for cidr in ("::/0", "::1/128", "2001:db8::/64", "2001:db8:1:2:3:4:5:6/128"):
+        valid = copy.deepcopy(values)
+        valid["networkPolicies"]["apiServerCIDRs"] = [cidr]
+        render(valid)
+    for port in (0, 65536, 1.5, "all"):
+        invalid = copy.deepcopy(values)
+        invalid["networkPolicies"]["probePorts"][0]["port"] = port
+        render(invalid, failure="integer port")
+    render({"networkPolicies": {"strict": True, "enabled": False}}, failure="requires networkPolicies.enabled=true")
+    # Legacy/default installs still render the documented broad fallback.
+    fallback = one(render(), "NetworkPolicy", "allow-kubelet-probes")["spec"]["ingress"][0]
+    assert "ports" not in fallback and {p["ipBlock"]["cidr"] for p in fallback["from"]} == {
+        "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "169.254.0.0/16"}
+
+
+if __name__ == "__main__":
+    main()