diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 397e683..30afdc2 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -2884,14 +2884,11 @@
         if (callback == null) {
             throw new IllegalArgumentException("null NetworkCallback");
         }
-        if ((need == null) && (action != REQUEST)) {
+        if (need == null && action != REQUEST) {
             throw new IllegalArgumentException("null NetworkCapabilities");
         }
-        final int targetSdk = mContext.getApplicationInfo().targetSdkVersion;
-        if ((targetSdk > VERSION_CODES.N_MR1) && (callback.networkRequest != null)) {
-            // http://b/20701525
-            throw new IllegalArgumentException("NetworkCallback already registered");
-        }
+        // TODO: throw an exception if callback.networkRequest is not null.
+        // http://b/20701525
         final NetworkRequest request;
         try {
             synchronized(sCallbacks) {
diff --git a/tests/net/java/android/net/ConnectivityManagerTest.java b/tests/net/java/android/net/ConnectivityManagerTest.java
index 684a101..b984bbf 100644
--- a/tests/net/java/android/net/ConnectivityManagerTest.java
+++ b/tests/net/java/android/net/ConnectivityManagerTest.java
@@ -36,36 +36,21 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.anyInt;
-import static org.mockito.Mockito.when;
 
-import android.content.Context;
-import android.content.pm.ApplicationInfo;
-import android.os.Build.VERSION_CODES;
-import android.net.ConnectivityManager.NetworkCallback;
+import android.net.ConnectivityManager;
+import android.net.NetworkCapabilities;
+
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
-import org.junit.Before;
-import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
+import org.junit.Test;
+
+
 
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class ConnectivityManagerTest {
-
-    @Mock Context mCtx;
-    @Mock IConnectivityManager mService;
-
-    @Before
-    public void setUp() {
-        MockitoAnnotations.initMocks(this);
-    }
-
     static NetworkCapabilities verifyNetworkCapabilities(
             int legacyType, int transportType, int... capabilities) {
         final NetworkCapabilities nc = ConnectivityManager.networkCapabilitiesForType(legacyType);
@@ -188,34 +173,4 @@
         verifyUnrestrictedNetworkCapabilities(
                 ConnectivityManager.TYPE_ETHERNET, TRANSPORT_ETHERNET);
     }
-
-    @Test
-    public void testNoDoubleCallbackRegistration() throws Exception {
-        ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
-        NetworkRequest request = new NetworkRequest.Builder().clearCapabilities().build();
-        NetworkCallback callback = new ConnectivityManager.NetworkCallback();
-        ApplicationInfo info = new ApplicationInfo();
-        info.targetSdkVersion = VERSION_CODES.N_MR1 + 1;
-
-        when(mCtx.getApplicationInfo()).thenReturn(info);
-        when(mService.requestNetwork(any(), any(), anyInt(), any(), anyInt())).thenReturn(request);
-
-        manager.requestNetwork(request, callback);
-
-        // Callback is already registered, reregistration should fail.
-        Class<IllegalArgumentException> wantException = IllegalArgumentException.class;
-        expectThrowable(() -> manager.requestNetwork(request, callback), wantException);
-    }
-
-    static void expectThrowable(Runnable block, Class<? extends Throwable> throwableType) {
-        try {
-            block.run();
-        } catch (Throwable t) {
-            if (t.getClass().equals(throwableType)) {
-                return;
-            }
-            fail("expected exception of type " + throwableType + ", but was " + t.getClass());
-        }
-        fail("expected exception of type " + throwableType);
-    }
 }