DNS_ERR_SHUTDOWN 3028 third_party/libevent/evdns.c 	case DNS_ERR_SHUTDOWN: return "dns subsystem shut down";
DNS_ERR_SHUTDOWN 3041 third_party/libevent/evdns.c 			reply_callback(req_head, 0, DNS_ERR_SHUTDOWN, NULL);
DNS_ERR_SHUTDOWN 3046 third_party/libevent/evdns.c 			reply_callback(req_waiting_head, 0, DNS_ERR_SHUTDOWN, NULL);