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{})
@@ -563,12 +556,11 @@ 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
-				g.It("Pods should be able to communicate on a secondary network [Timeout:30m]", func() {
+				// 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:45m]", 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") })
 				})
 			})
 		})

test/extended/util/annotate/generated/zz_generated.annotations.go

@@ -631,7 +631,7 @@ spec:
         when using openshift ovn-kubernetes [PodNetwork] Advertising a cluster user
         defined network [apigroup:user.openshift.io][apigroup:security.openshift.io]
         Over a VRF-Lite configuration Pods should be able to communicate on a secondary
-        network [Timeout:30m]'
+        network [Timeout:45m]'
     - testName: '[sig-network][OCPFeatureGate:RouteAdvertisements][Feature:RouteAdvertisements][apigroup:operator.openshift.io]
         when using openshift ovn-kubernetes [PodNetwork] Advertising a cluster user
         defined network [apigroup:user.openshift.io][apigroup:security.openshift.io]