Random initialization of node unsuccessful #2

            artnet_node artnetNode = artnet_new(ip_addr, 0);

            if (!artnetNode) {
                printf("Error: %s\n", artnet_strerror());
                throw new SenderException(artnet_strerror());
            }

            artnet_set_long_name(artnetNode, "Art-Net AirDMX");
            artnet_set_short_name(artnetNode, "AirDMX");

            // set the upper 4 bits of the universe address
            artnet_set_subnet_addr(artnetNode, subnet_addr);

            // enable port 0
            artnet_set_port_type(artnetNode, 0, ARTNET_ENABLE_OUTPUT, ARTNET_PORT_DMX);

            // bind port 0 to universe 1
            artnet_set_port_addr(artnetNode, 0, ARTNET_OUTPUT_PORT, port_addr);

            artnet_dump_config(artnetNode);

            //artnet_set_handler(artnetNode, ARTNET_RECV_HANDLER, artnetReceiver, NULL);

            if (artnet_start(artnetNode) != 0) {
                printf("Error: %s\n", artnet_strerror());
                throw new SenderException(artnet_strerror());
            }