70     fprintf(stderr,  in usage()
105             fprintf(stderr, "Invalid config line:\n  %s\n", line);  in parse_acl_file()
122             fprintf(stderr, "name `%s' too long: %zu\n", arg, strlen(arg));  in parse_acl_file()
148             fprintf(stderr, "Unknown command `%s'\n", cmd);  in parse_acl_file()
256             fprintf(stderr, "failed to drop privileges\n");  in main()
283         fprintf(stderr, "name `%s' too long: %zu\n", bridge, strlen(bridge));  in main()
291         fprintf(stderr, "failed to parse default acl file `%s'\n",  in main()
325         fprintf(stderr, "access denied by acl file\n");  in main()
333         fprintf(stderr, "failed to open control socket: %s\n", strerror(errno));  in main()
341         fprintf(stderr, "failed to open /dev/net/tun: %s\n", strerror(errno));  in main()
355         fprintf(stderr, "failed to create tun device: %s\n", strerror(errno));  in main()
366         fprintf(stderr, "failed to get mtu of bridge `%s': %s\n",  in main()
379         fprintf(stderr, "failed to set mtu of device `%s' to %d: %s\n",  in main()
390         fprintf(stderr, "failed to get MAC address of device `%s': %s\n",  in main()
397         fprintf(stderr, "failed to set MAC address of device `%s': %s\n",  in main()
418         fprintf(stderr, "failed to add interface `%s' to bridge `%s': %s\n",  in main()
427         fprintf(stderr, "failed to get interface flags for `%s': %s\n",  in main()
435         fprintf(stderr, "failed to bring up interface `%s': %s\n",  in main()
443         fprintf(stderr, "failed to write fd to unix socket: %s\n",  in main()