个别ip反查PTR超时

[w22gb8]

dig -x 104.244.42.1超时，直接@8.8.8.8没问题，log如下：

[2022-02-09 00:29:46,986][DEBUG][     dns_server.c:2759] recv query packet from 127.0.0.1, len = 66
[2022-02-09 00:29:46,986][DEBUG][            dns.c:1538] opt type 10
[2022-02-09 00:29:46,986][DEBUG][            dns.c:1556] DNS opt type = 10 not supported
[2022-02-09 00:29:46,986][DEBUG][     dns_server.c:2767] request qdcount = 1, ancount = 0, nscount = 0, nrcount = 0, len = 66, id = 2741, tc = 0, rd = 1, ra = 0, rcode = 0
[2022-02-09 00:29:46,986][ INFO][     dns_server.c:2792] query server 1.42.244.104.in-addr.arpa from 127.0.0.1, qtype = 12
[2022-02-09 00:29:46,986][DEBUG][     dns_client.c:502 ] send query to group dot
[2022-02-09 00:29:46,986][DEBUG][     dns_client.c:2791] send query to server 8.8.4.4
[2022-02-09 00:29:46,986][DEBUG][     dns_client.c:1825] tls server 8.8.4.4 connecting.
[2022-02-09 00:29:46,986][DEBUG][     dns_client.c:2791] send query to server 8.8.8.8
[2022-02-09 00:29:46,986][DEBUG][     dns_client.c:1825] tls server 8.8.8.8 connecting.
[2022-02-09 00:29:46,986][ INFO][     dns_client.c:2992] send request 1.42.244.104.in-addr.arpa, qtype 12, id 1
[2022-02-09 00:29:47,009][DEBUG][     dns_client.c:2532] tls server 8.8.8.8 connected.
[2022-02-09 00:29:47,009][DEBUG][     dns_client.c:2537] new session
[2022-02-09 00:29:47,009][DEBUG][     dns_client.c:2407] peer CN: dns.google
[2022-02-09 00:29:47,009][DEBUG][     dns_client.c:2458] cert SPKI pin(sha256): D0:0F:AA:96:78:E1:E2:3C:63:4B:4D:78:3F:28:6A:82:C9:0C:66:5E:6D:F2:11:60:98:62:40:4D:E5:B1:A8:8B
[2022-02-09 00:29:47,010][DEBUG][     dns_client.c:2532] tls server 8.8.4.4 connected.
[2022-02-09 00:29:47,010][DEBUG][     dns_client.c:2537] new session
[2022-02-09 00:29:47,010][DEBUG][     dns_client.c:2407] peer CN: dns.google
[2022-02-09 00:29:47,010][DEBUG][     dns_client.c:2458] cert SPKI pin(sha256): 18:84:8A:29:FA:F4:18:31:5B:C4:37:3A:D9:8C:2B:37:DF:AD:D9:85:D8:9C:D0:DA:B9:A3:9F:CF:1D:07:50:A3
[2022-02-09 00:29:47,090][DEBUG][     dns_client.c:2154] recv tcp packet from 8.8.4.4, len = 56
[2022-02-09 00:29:47,090][DEBUG][     dns_client.c:1566] qdcount = 1, ancount = 0, nscount = 0, nrcount = 0, len = 54, id = 1, tc = 0, rd = 1, ra = 1, rcode = 2, payloadsize = 512
[2022-02-09 00:29:47,090][DEBUG][     dns_client.c:1577] domain: 1.42.244.104.in-addr.arpa qtype: 12  qclass: 1
[2022-02-09 00:29:47,090][DEBUG][     dns_server.c:1676] inquery failed, 1.42.244.104.in-addr.arpa, rcode = 2, id = 1
[2022-02-09 00:29:47,109][DEBUG][     dns_client.c:2154] recv tcp packet from 8.8.8.8, len = 56
[2022-02-09 00:29:47,109][DEBUG][     dns_client.c:1566] qdcount = 1, ancount = 0, nscount = 0, nrcount = 0, len = 54, id = 1, tc = 0, rd = 1, ra = 1, rcode = 2, payloadsize = 512
[2022-02-09 00:29:47,109][DEBUG][     dns_client.c:1577] domain: 1.42.244.104.in-addr.arpa qtype: 12  qclass: 1
[2022-02-09 00:29:47,109][DEBUG][     dns_server.c:1676] inquery failed, 1.42.244.104.in-addr.arpa, rcode = 2, id = 1

[PikuZheng]

root@Server:~# dig @8.8.8.8 -x 104.244.42.1
;; ->>HEADER<<- opcode: QUERY; status: SERVFAIL; id: 9226
;; Flags: qr rd ra; QUERY: 1; ANSWER: 0; AUTHORITY: 0; ADDITIONAL: 0

;; QUESTION SECTION:
;; 1.42.244.104.in-addr.arpa.           IN      PTR

;; Received 43 B
;; Time 2022-02-08 20:19:40 EST
;; From 8.8.8.8@53(UDP) in 183.3 ms

这个ip就是没法反查的

[w22gb8]

root@Server:~# dig @8.8.8.8 -x 104.244.42.1
;; ->>HEADER<<- opcode: QUERY; status: SERVFAIL; id: 9226
;; Flags: qr rd ra; QUERY: 1; ANSWER: 0; AUTHORITY: 0; ADDITIONAL: 0

;; QUESTION SECTION:
;; 1.42.244.104.in-addr.arpa.           IN      PTR

;; Received 43 B
;; Time 2022-02-08 20:19:40 EST
;; From 8.8.8.8@53(UDP) in 183.3 ms

这个ip就是没法反查的

是没法反查，问题是smartdns不直接返回无结果，而是超时。

[pymumu]

最新版本验证，有问题reopen issue