diff --git a/testsuite/src/test/java/io/netty/testsuite/transport/socket/AbstractDatagramMulticastTest.java b/testsuite/src/test/java/io/netty/testsuite/transport/socket/AbstractDatagramMulticastTest.java
index a4c6f08a33..7f62b2a14d 100644
--- a/testsuite/src/test/java/io/netty/testsuite/transport/socket/AbstractDatagramMulticastTest.java
+++ b/testsuite/src/test/java/io/netty/testsuite/transport/socket/AbstractDatagramMulticastTest.java
@@ -73,7 +73,7 @@ public abstract class AbstractDatagramMulticastTest {
 
         int port = TestUtils.getFreePort();
         
-        NetworkInterface iface = NetworkInterface.getByInetAddress(InetAddress.getLoopbackAddress());
+        NetworkInterface iface = NetworkInterface.getByInetAddress(InetAddress.getLocalHost());
         sb.setOption("networkInterface", iface);
         sb.setOption("reuseAddress", true);
         
@@ -88,7 +88,6 @@ public abstract class AbstractDatagramMulticastTest {
 
         DatagramChannel cc = (DatagramChannel) cb.bind(new InetSocketAddress(port));
         
-
         assertTrue(cc.joinGroup(groupAddress, iface).awaitUninterruptibly().isSuccess());
  
         assertTrue(sc.write(ChannelBuffers.wrapInt(1), groupAddress).awaitUninterruptibly().isSuccess());
diff --git a/testsuite/src/test/java/io/netty/testsuite/transport/socket/nio/oio/NioOioDatagramMulticastTest.java b/testsuite/src/test/java/io/netty/testsuite/transport/socket/nio/oio/NioOioDatagramMulticastTest.java
index 30c70aa019..ab5861ac9f 100644
--- a/testsuite/src/test/java/io/netty/testsuite/transport/socket/nio/oio/NioOioDatagramMulticastTest.java
+++ b/testsuite/src/test/java/io/netty/testsuite/transport/socket/nio/oio/NioOioDatagramMulticastTest.java
@@ -3,6 +3,7 @@ package io.netty.testsuite.transport.socket.nio.oio;
 import java.util.concurrent.Executor;
 
 import io.netty.channel.socket.DatagramChannelFactory;
+import io.netty.channel.socket.nio.NioDatagramChannel;
 import io.netty.channel.socket.nio.NioDatagramChannelFactory;
 import io.netty.channel.socket.oio.OioDatagramChannelFactory;
 import io.netty.testsuite.transport.socket.AbstractDatagramMulticastTest;
@@ -16,7 +17,7 @@ public class NioOioDatagramMulticastTest extends AbstractDatagramMulticastTest {
 
     @Override
     protected DatagramChannelFactory newClientSocketChannelFactory(Executor executor) {
-        return new NioDatagramChannelFactory(executor);
+        return new NioDatagramChannelFactory(executor, NioDatagramChannel.ProtocolFamily.INET);
 
     }