Enable test for LGW L2

Author: arkadeepsen

test/extended/networking/route_advertisements.go

@@ -385,13 +385,6 @@ var _ = g.Describe("[sig-network][OCPFeatureGate:RouteAdvertisements][Feature:Ro
 
 				var err error
 				var snifferPodsNodes []string
-				// Check if the cluster is in local gateway mode
-				network, err := oc.AdminOperatorClient().OperatorV1().Networks().Get(context.TODO(), "cluster", metav1.GetOptions{})
-				o.Expect(err).NotTo(o.HaveOccurred())
-				if network.Spec.DefaultNetwork.OVNKubernetesConfig.GatewayConfig != nil && network.Spec.DefaultNetwork.OVNKubernetesConfig.GatewayConfig.RoutingViaHost && testCUDNTopology == "layer2" {
-					// TODO: unskip once CORENET-5881 is done.
-					skipper.Skipf("Skipping Layer2 UDN advertisements test for local gateway mode")
-				}
 				if testCUDNTopology == "layer2" {
 					// Running the packet sniffer on all nodes in the cluster for Layer2 UDN
 					nodes, err := clientset.CoreV1().Nodes().List(context.TODO(), metav1.ListOptions{})
@@ -469,7 +462,6 @@ var _ = g.Describe("[sig-network][OCPFeatureGate:RouteAdvertisements][Feature:Ro
 				err := runOcWithRetryIgnoreOutput(oc.AsAdmin(), "delete", "deploy", deployName)
 				errors.Join(err, runOcWithRetryIgnoreOutput(oc.AsAdmin(), "delete", "pod", "--all"))
 				errors.Join(err, runOcWithRetryIgnoreOutput(oc.AsAdmin().WithoutNamespace(), "delete", "ra", testCUDNName))
-				errors.Join(err, runOcWithRetryIgnoreOutput(oc.AsAdmin().WithoutNamespace(), "delete", "ra", testCUDNName))
 				errors.Join(err, runOcWithRetryIgnoreOutput(oc.AsAdmin().WithoutNamespace(), "delete", "clusteruserdefinednetwork", testCUDNName))
 				errors.Join(err, deallocateSubnets(oc, userDefinedNetworkIPv4Subnet, userDefinedNetworkIPv6Subnet))
 				cleanup()
@@ -516,18 +508,20 @@ var _ = g.Describe("[sig-network][OCPFeatureGate:RouteAdvertisements][Feature:Ro
 					o.Eventually(workaroundOCPBUGS56488).WithArguments(oc).WithTimeout(3 * time.Minute).WithPolling(5 * time.Second).Should(o.BeTrue())
 				})
 
-				g.AfterEach(func() {
-					o.Expect(func() error {
-						err := runOcWithRetryIgnoreOutput(oc.AsAdmin(), "delete", "nncp", "extranet")
-						errors.Join(err, afterEach())
-						return err
-					}()).To(o.Succeed())
-				})
-
 				test := func(topology string) {
 					// general prerequisites
 					beforeEach(vrfLiteCUDNName, "auto", topology, vrfLiteSnifferInterface)
 
+					// cleanup the VRF-Lite configuration
+					defer func() {
+						o.Expect(func() error {
+							err := runOcWithRetryIgnoreOutput(oc.AsAdmin(), "delete", "nncp", "extranet")
+							errors.Join(err, afterEach())
+							errors.Join(err, runOcWithRetryIgnoreOutput(oc.AsAdmin(), "delete", "ds", packetSnifferDaemonSet.Name, "-n", snifferNamespace))
+							return err
+						}()).To(o.Succeed())
+					}()
+
 					// we shouldn't need to do this but we have to because of
 					// https://issues.redhat.com/browse/RHEL-89914
 					// recycle the VRF until it becomes managed
@@ -563,12 +557,11 @@ var _ = g.Describe("[sig-network][OCPFeatureGate:RouteAdvertisements][Feature:Ro
 
 				// All VRF-Lite checks for 'vrfLiteCUDNName' need to happen on a
 				// single test (or otherwise we should resort to a serial job)
-				// This test has a long timeout due to its serial nature and also
-				// because of OCPBUGS-56488
+				// This test has a long timeout due to its serial nature, testing both
+				// Layer 3 and Layer 2 topologies serially, and also because of OCPBUGS-56488
 				g.It("Pods should be able to communicate on a secondary network [Timeout:30m]", func() {
 					g.By("testing with a layer 3 CUDN", func() { test("layer3") })
-					// TODO: Add test for layer 2 UDN once CORENET-5881 is done.
-					//g.By("testing with a layer 2 CUDN", func() { test("layer2") })
+					g.By("testing with a layer 2 CUDN", func() { test("layer2") })
 				})
 			})
 		})