[ALERT] java.net.SocketException: Operation not permitted

[jarne]

The server freezes sometimes with this error, it looks very similar like #51, but it's another error message and not fixed with #58 #59.

2016-10-4 17:56:24 [INFO] pndh[/***:19132] logged in with client id ***
2016-10-4 17:56:24 [INFO] pndh has been transferred to lobby
2016-10-4 17:56:32 [ALERT] java.net.SocketException: Operation not permitted
    at sun.nio.ch.DatagramChannelImpl.send0(Native Method)
    at sun.nio.ch.DatagramChannelImpl.sendFromNativeBuffer(DatagramChannelImpl.java:521)
    at sun.nio.ch.DatagramChannelImpl.send(DatagramChannelImpl.java:498)
    at sun.nio.ch.DatagramChannelImpl.send(DatagramChannelImpl.java:462)
    at org.itxtech.nemisys.raknet.server.UDPServerSocket.writePacket(UDPServerSocket.java:87)
    at org.itxtech.nemisys.raknet.server.UDPServerSocket.writePacket(UDPServerSocket.java:78)
    at org.itxtech.nemisys.raknet.server.SessionManager.sendPacket(SessionManager.java:197)
    at org.itxtech.nemisys.raknet.server.Session.sendPacket(Session.java:189)
    at org.itxtech.nemisys.raknet.server.Session.update(Session.java:118)
    at org.itxtech.nemisys.raknet.server.SessionManager.tick(SessionManager.java:107)
    at org.itxtech.nemisys.raknet.server.SessionManager.tickProcessor(SessionManager.java:100)
    at org.itxtech.nemisys.raknet.server.SessionManager.run(SessionManager.java:69)
    at org.itxtech.nemisys.raknet.server.SessionManager.<init>(SessionManager.java:57)
    at org.itxtech.nemisys.raknet.server.RakNetServer.run(RakNetServer.java:101)

2016-10-4 18:00:34 [INFO] DerVollHorst[/***:19137] logged out due to timeout
2016-10-4 18:00:56 [INFO] Ichliebebirnen[/***:59678] logged out due to timeout
2016-10-4 18:01:05 [INFO] McCiller004[/***:37284] logged out due to timeout
2016-10-4 18:01:07 [INFO] manu[/***:19132] logged out due to timeout
2016-10-4 18:01:17 [INFO] CookieBaby_CBG[/***:28996] logged out due to timeout
2016-10-4 18:01:22 [INFO] smokeybacon[/***:19132] logged out due to timeout
2016-10-4 18:01:26 [INFO] DragiBee5975[/***:19132] logged out due to timeout
2016-10-4 18:01:27 [INFO] pndh[/***:19132] logged out due to timeout