code: public EpollDatagramChannelConfig setReusePort(boolean reusePort) {
          try {
              ((EpollDatagramChannel) channel).socket.setReusePort(reusePort);
              return this;
          } catch (IOException e) {
              throw new ChannelException(e);
          }
      }
docs: Set the SO_REUSEPORT option on the underlying Channel. This will allow to bind multiple
  {@link EpollSocketChannel}s to the same port and so accept connections with multiple threads.
  
  Be aware this method needs be called before {@link EpollDatagramChannel#bind(java.net.SocketAddress)} to have
  any affect.