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java.net.SocketException: 	at java.net.NetworkInterface.rethrowAsSocketException(NetworkInterface.java:248)	at java.net.NetworkInterface.readIntFile(NetworkInterface.java:243)	at java.net.NetworkInterface.getByNameInternal(NetworkInterface.java:121)	at java.net.NetworkInterface.getNetworkInterfacesList(NetworkInterface.java:309)	at java.net.NetworkInterface.getNetworkInterfaces(NetworkInterface.java:298)	at io.netty.util.NetUtil.(NetUtil.java:157)	at io.netty.util.internal.MacAddressUtil.bestAvailableMac(MacAddressUtil.java:53)	at io.netty.channel.DefaultChannelId.defaultMachineId(DefaultChannelId.java:127)	at io.netty.channel.DefaultChannelId.(DefaultChannelId.java:104)	at io.netty.channel.AbstractChannel.newId(AbstractChannel.java:107)	at io.netty.channel.AbstractChannel.(AbstractChannel.java:79)	at io.netty.channel.nio.AbstractNioChannel.(AbstractNioChannel.java:83)	at io.netty.channel.nio.AbstractNioMessageChannel.(AbstractNioMessageChannel.java:42)	at io.netty.channel.socket.nio.NioServerSocketChannel.(NioServerSocketChannel.java:84)	at io.netty.channel.socket.nio.NioServerSocketChannel.(NioServerSocketChannel.java:70)	at java.lang.Class.newInstanceImpl(Native Method)	at java.lang.Class.newInstance(Class.java:1215)	at io.netty.channel.ReflectiveChannelFactory.newChannel(ReflectiveChannelFactory.java:38)	at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:319)	at io.netty.bootstrap.AbstractBootstrap.doBind(AbstractBootstrap.java:281)	at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:277)	at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:252)