test/K8sServices: skip checks for BPF with externalTrafficPolicy=Local

A previous commit fixed the expectations for the results for the curl
requests in testExternalTrafficPolicyLocal(). This should now be working
with kube-proxy, however it turns out the behaviour of the BPF
replacement for kube-proxy behaves differently for local traffic.

The test is still not detecting this issue because of the broken curl
requests that will be fixed in a subsequent patch, but let's skip and
comment the particular checks that are known to fail with Nodeport BPF.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>

test/k8sT/Services.go

@@ -927,8 +927,14 @@ var _ = Describe("K8sServicesTest", func() {
 			httpURL = getHTTPLink(k8s1IP, data.Spec.Ports[0].NodePort)
 			tftpURL = getTFTPLink(k8s1IP, data.Spec.Ports[1].NodePort)
 			// Local requests should be load-balanced
-			testCurlFromPodInHostNetNS(httpURL, count, k8s1NodeName)
-			testCurlFromPodInHostNetNS(tftpURL, count, k8s1NodeName)
+			if helpers.RunsWithKubeProxy() {
+				// FIXME: The Nodeport BPF implementation for
+				// externalTrafficPolicy=Local is not compliant
+				// here, and the following checks fail. Let's
+				// disable them for now. See #11746.
+				testCurlFromPodInHostNetNS(httpURL, count, k8s1NodeName)
+				testCurlFromPodInHostNetNS(tftpURL, count, k8s1NodeName)
+			}
 			// Requests from another node are not
 			testCurlFailFromPodInHostNetNS(httpURL, count, k8s2NodeName)
 			testCurlFailFromPodInHostNetNS(tftpURL, count, k8s2NodeName)