server socket 6881 is unable to bind of incoming connection

Question

java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Unknown Source)
    at sun.nio.ch.Net.bind(Unknown Source)
    at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
    at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
    at com.aelitis.azureus.core.networkmanager.impl.tcp.VirtualBlockingServerChannelSelector.start(VirtualBlockingServerChannelSelector.java:77)
    at com.aelitis.azureus.core.networkmanager.impl.tcp.IncomingSocketChannelManager.start(IncomingSocketChannelManager.java:420)
    at com.aelitis.azureus.core.networkmanager.impl.tcp.IncomingSocketChannelManager.<init>(IncomingSocketChannelManager.java:152)
    at com.aelitis.azureus.core.networkmanager.impl.tcp.TCPNetworkManager.<init>(TCPNetworkManager.java:125)
    at com.aelitis.azureus.core.networkmanager.impl.tcp.TCPNetworkManager.<clinit>(TCPNetworkManager.java:48)
    at com.aelitis.azureus.core.networkmanager.NetworkManager.getMinMssSize(NetworkManager.java:267)
    at com.aelitis.azureus.core.networkmanager.impl.ByteBucketST.ensureByteBucketMinBurstRate(ByteBucketST.java:168)
    at com.aelitis.azureus.core.networkmanager.impl.ByteBucketST.<init>(ByteBucketST.java:59)
    at com.aelitis.azureus.core.networkmanager.impl.ByteBucketST.<init>(ByteBucketST.java:45)
    at com.aelitis.azureus.core.networkmanager.impl.TransferProcessor.createBucket(TransferProcessor.java:556)
    at com.aelitis.azureus.core.networkmanager.impl.TransferProcessor.<init>(TransferProcessor.java:75)
    at com.aelitis.azureus.core.networkmanager.NetworkManager.<init>(NetworkManager.java:161)
    at com.aelitis.azureus.core.networkmanager.NetworkManager.<clinit>(NetworkManager.java:53)
    at com.aelitis.azureus.core.impl.AzureusCoreImpl.<init>(AzureusCoreImpl.java:289)
    at com.aelitis.azureus.core.impl.AzureusCoreImpl.create(AzureusCoreImpl.java:145)
    at com.aelitis.azureus.core.AzureusCoreFactory.create(AzureusCoreFactory.java:43)
    at org.gudy.azureus2.ui.swt.Main.<init>(Main.java:107)
    at org.gudy.azureus2.ui.swt.Main.main(Main.java:328)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.aelitis.azureus.launcher.MainExecutor$1.run(MainExecutor.java:34)
    at java.lang.Thread.run(Unknown Source)

Answer 1

java.net.BindException: Address already in use: bind
   at sun.nio.ch.Net.bind0(Native Method)
   at sun.nio.ch.Net.bind(Unknown Source)
   at sun.nio.ch.Net.bind(Unknown Source)
   at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
   at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)

According to error log your on the port your trying to start the application is already in use

before start check for running ports "netstat -ntlp" this will show open ports and applications try to use free port.

Answer 2

It seems you are having problem with shared network. Go to Settings > Network Connections > Properties, select Sharing Options and disable Allow other network users to connect through this computer's internet connection.

Finally restart VUZE, and it's done.