title: ServerBootstrap bind method
body: <p>I am using Netty 4.0.33 lib.
  Would tell me the meaning for ServerBootstrap.bind() method?
  Is it bind all local IP address and TCP port?</p>
  
  <p>How about the ServerBootstrap.bind(int inetPort) method mean?
  Is it create a channel for all local IP address and inetPort and then bind on it?</p>