code: func DefaultConfig() *Config {
  	hostname, _ := os.Hostname()
  	return &Config{
  		NodeID:            stringid.TruncateID(stringid.GenerateRandomID()),
  		Hostname:          hostname,
  		BindAddr:          "0.0.0.0",
  		PacketBufferSize:  1400,
  		StatsPrintPeriod:  5 * time.Minute,
  		HealthPrintPeriod: 1 * time.Minute,
  		reapEntryInterval: 30 * time.Minute,
  	}
  }
docs: // DefaultConfig returns a NetworkDB config with default values