@@ -2638,3 +2638,37 @@ func TestRunModeIpcContainer(t *testing.T) {

 	logDone("run - hostname and several network modes")

 }

+

+func TestContainerNetworkMode(t *testing.T) {

+	cmd := exec.Command(dockerBinary, "run", "-d", "busybox", "top")

+	out, _, err := runCommandWithOutput(cmd)

+	if err != nil {

+		t.Fatal(err, out)

+	}

+	id := strings.TrimSpace(out)

+	if err := waitRun(id); err != nil {

+		t.Fatal(err)

+	}

+	pid1, err := inspectField(id, "State.Pid")

+	if err != nil {

+		t.Fatal(err)

+	}

+

+	parentContainerNet, err := os.Readlink(fmt.Sprintf("/proc/%s/ns/net", pid1))

+	if err != nil {

+		t.Fatal(err)

+	}

+	cmd = exec.Command(dockerBinary, "run", fmt.Sprintf("--net=container:%s", id), "busybox", "readlink", "/proc/self/ns/net")

+	out2, _, err := runCommandWithOutput(cmd)

+	if err != nil {

+		t.Fatal(err, out2)

+	}

+

+	out2 = strings.Trim(out2, "\n")

+	if parentContainerNet != out2 {

+		t.Fatalf("NET different with --net=container:%s %s != %s\n", id, parentContainerNet, out2)

+	}

+	deleteAllContainers()

+

+	logDone("run - container shared network namespace")

+}