HashedWheelTimeout while connecting to router

2014-07-07 13:32:16.275 CEST [nettyThreadgroupModule$NioEventLoopGroupCloseable-7-2] INFO o.o.p.f.AbstractSessionNegotiator - Unexpected error during negotiation
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[na:1.7.0_25]
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) ~[na:1.7.0_25]
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:225) ~[na:1.7.0_25]
at sun.nio.ch.IOUtil.read(IOUtil.java:193) ~[na:1.7.0_25]
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:375) ~[na:1.7.0_25]
at io.netty.buffer.UnpooledUnsafeDirectByteBuf.setBytes(UnpooledUnsafeDirectByteBuf.java:446) ~[na:na]
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:871) ~[na:na]
at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:225) ~[na:na]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:115) ~[na:na]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:507) ~[na:na]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:464) ~[na:na]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378) ~[na:na]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350) ~[na:na]
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) ~[na:na]
at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
2014-07-07 13:32:36.176 CEST [pool-13-thread-1] WARN io.netty.util.HashedWheelTimer - An exception was thrown by TimerTask.
java.lang.IllegalStateException: complete already: ProtocolSessionPromise@23e32757(failure(java.io.IOException: An existing connection was forcibly closed by the remote host)
at io.netty.util.concurrent.DefaultPromise.setFailure(DefaultPromise.java:424) ~[na:na]
at org.opendaylight.protocol.framework.AbstractSessionNegotiator.negotiationFailed(AbstractSessionNegotiator.java:52) ~[na:na]
at org.opendaylight.controller.netconf.nettyutil.AbstractNetconfSessionNegotiator.access$400(AbstractNetconfSessionNegotiator.java:43) ~[na:na]
at org.opendaylight.controller.netconf.nettyutil.AbstractNetconfSessionNegotiator$2.run(AbstractNetconfSessionNegotiator.java:117) ~[na:na]
at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:531) ~[na:na]
at io.netty.util.HashedWheelTimer$Worker.notifyExpiredTimeouts(HashedWheelTimer.java:425) ~[na:na]
at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:376) ~[na:na]
at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
Caused by: java.lang.IllegalStateException: Session was not established after HashedWheelTimer$HashedWheelTimeout(deadline: 100747268 ns ago, task: org.opendaylight.controller.netconf.nettyutil.AbstractNetconfSessionNegotiator$2@22214c70)
at org.opendaylight.controller.netconf.nettyutil.AbstractNetconfSessionNegotiator$2.run(AbstractNetconfSessionNegotiator.java:115) ~[na:na]
... 4 common frames omitted