In legacy/trac#30091, we replaced this code: ``` if (!strcasecmpstart(option, "purpose=")) { option += strlen("purpose="); purpose = router_purpose_from_string(option); if (purpose == ROUTER_PURPOSE_UNKNOWN) { connection_printf_to_buf(conn, "552 Unknown purpose \"%s\"\r\n", option); goto done; } } ``` With this code: ``` line = config_line_find_case(args->kwargs, "purpose"); if (line) { purpose = router_purpose_from_string(line->value); connection_printf_to_buf(conn, "552 Unknown purpose \"%s\"\r\n", line->value); goto done; } ``` There's no purpose check any more (`if (purpose == ROUTER_PURPOSE_UNKNOWN) {`), so Tor rejects all POSTDESCRIPTOR requests. I'm assigning this bug to nickm and cc'ing catalyst, because they were the author and reviewer.