Added logging to netty
diff --git a/utils/netty/src/main/java/org/onlab/netty/NettyMessagingService.java b/utils/netty/src/main/java/org/onlab/netty/NettyMessagingService.java
index 48aeb30..5a51ad4 100644
--- a/utils/netty/src/main/java/org/onlab/netty/NettyMessagingService.java
+++ b/utils/netty/src/main/java/org/onlab/netty/NettyMessagingService.java
@@ -248,6 +248,7 @@
 
         @Override
         public void exceptionCaught(ChannelHandlerContext context, Throwable cause) {
+            log.error("Exception inside channel handling pipeline.", cause);
             context.close();
         }
     }