public PeerNAT start() {
ConnectionConfiguration connectionConfiguration = new DefaultConnectionConfiguration();
if(bufferConfig == null) {
bufferConfig = new MessageBufferConfiguration();
}
final NATUtils natUtils = new NATUtils();
final RconRPC rconRPC = new RconRPC(peer);
final RelayRPC relayRPC = new RelayRPC(peer, rconRPC, bufferConfig, connectionConfiguration);