diff --git a/transport-rxtx/src/main/java/io/netty/transport/rxtx/RxtxChannel.java b/transport-rxtx/src/main/java/io/netty/transport/rxtx/RxtxChannel.java
index e9dea5a520..c62b50b1e2 100644
--- a/transport-rxtx/src/main/java/io/netty/transport/rxtx/RxtxChannel.java
+++ b/transport-rxtx/src/main/java/io/netty/transport/rxtx/RxtxChannel.java
@@ -20,7 +20,6 @@ import gnu.io.CommPortIdentifier;
 import gnu.io.SerialPort;
 import io.netty.buffer.BufType;
 import io.netty.buffer.ByteBuf;
-import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelMetadata;
 import io.netty.channel.socket.oio.AbstractOioByteChannel;
 
@@ -37,10 +36,13 @@ import static io.netty.transport.rxtx.RxtxChannelOptions.*;
  * A channel to a serial device using the RXTX library.
  */
 public class RxtxChannel extends AbstractOioByteChannel {
+
+    private static final RxtxDeviceAddress LOCAL_ADDRESS = new RxtxDeviceAddress("localhost");
     private static final ChannelMetadata METADATA = new ChannelMetadata(BufType.BYTE, true);
 
-    private final ChannelConfig config;
+    private final RxtxChannelConfig config;
 
+    private boolean open = true;
     private RxtxDeviceAddress deviceAddress;
     private SerialPort serialPort;
     private InputStream in;
@@ -53,7 +55,7 @@ public class RxtxChannel extends AbstractOioByteChannel {
     }
 
     @Override
-    public ChannelConfig config() {
+    public RxtxChannelConfig config() {
         return config;
     }
 
@@ -64,7 +66,7 @@ public class RxtxChannel extends AbstractOioByteChannel {
 
     @Override
     public boolean isOpen() {
-        return true;
+        return open;
     }
 
     @Override
@@ -121,12 +123,22 @@ public class RxtxChannel extends AbstractOioByteChannel {
     }
 
     @Override
-    protected SocketAddress localAddress0() {
-        return null;
+    public RxtxDeviceAddress localAddress() {
+        return (RxtxDeviceAddress) super.localAddress();
     }
 
     @Override
-    protected SocketAddress remoteAddress0() {
+    public RxtxDeviceAddress remoteAddress() {
+        return (RxtxDeviceAddress) super.remoteAddress();
+    }
+
+    @Override
+    protected RxtxDeviceAddress localAddress0() {
+        return LOCAL_ADDRESS;
+    }
+
+    @Override
+    protected RxtxDeviceAddress remoteAddress0() {
         return deviceAddress;
     }
 
@@ -142,6 +154,8 @@ public class RxtxChannel extends AbstractOioByteChannel {
 
     @Override
     protected void doClose() throws Exception {
+        open = false;
+
         IOException ex = null;
 
         try {
diff --git a/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioChannel.java b/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioChannel.java
index b2ac23252f..3154776914 100644
--- a/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioChannel.java
+++ b/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioChannel.java
@@ -20,7 +20,6 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelPromise;
 import io.netty.channel.EventLoop;
 
-import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 
 /**
@@ -47,16 +46,6 @@ public abstract class AbstractOioChannel extends AbstractChannel {
         super(parent, id);
     }
 
-    @Override
-    public InetSocketAddress localAddress() {
-        return (InetSocketAddress) super.localAddress();
-    }
-
-    @Override
-    public InetSocketAddress remoteAddress() {
-        return (InetSocketAddress) super.remoteAddress();
-    }
-
     @Override
     protected AbstractUnsafe newUnsafe() {
         return new DefaultOioUnsafe();
diff --git a/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioMessageChannel.java b/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioMessageChannel.java
index 2a53d86f43..93e6c386e8 100755
--- a/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioMessageChannel.java
+++ b/transport/src/main/java/io/netty/channel/socket/oio/AbstractOioMessageChannel.java
@@ -20,6 +20,7 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelPipeline;
 
 import java.io.IOException;
+import java.net.InetSocketAddress;
 
 /**
  * Abstract base class for OIO which reads and writes objects from/to a Socket
@@ -33,6 +34,16 @@ public abstract class AbstractOioMessageChannel extends AbstractOioChannel {
         super(parent, id);
     }
 
+    @Override
+    public InetSocketAddress localAddress() {
+        return (InetSocketAddress) super.localAddress();
+    }
+
+    @Override
+    public InetSocketAddress remoteAddress() {
+        return (InetSocketAddress) super.remoteAddress();
+    }
+
     @Override
     protected void doRead() {
         final ChannelPipeline pipeline = pipeline();
diff --git a/transport/src/main/java/io/netty/channel/socket/oio/OioSocketChannel.java b/transport/src/main/java/io/netty/channel/socket/oio/OioSocketChannel.java
index 4b3718cd7d..9687528aec 100755
--- a/transport/src/main/java/io/netty/channel/socket/oio/OioSocketChannel.java
+++ b/transport/src/main/java/io/netty/channel/socket/oio/OioSocketChannel.java
@@ -33,6 +33,7 @@ import io.netty.logging.InternalLoggerFactory;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.net.SocketAddress;
 import java.net.SocketTimeoutException;
@@ -163,6 +164,16 @@ public class OioSocketChannel extends AbstractOioByteChannel
         return future;
     }
 
+    @Override
+    public InetSocketAddress localAddress() {
+        return (InetSocketAddress) super.localAddress();
+    }
+
+    @Override
+    public InetSocketAddress remoteAddress() {
+        return (InetSocketAddress) super.remoteAddress();
+    }
+
     @Override
     protected SocketAddress localAddress0() {
         return socket.getLocalSocketAddress();