我在台式机上(xubuntu 18.04,从 xubuntu 16.04 升级)并且试图解决www.cnmv.es
但没有得到答案:
$ dig www.cnmv.es
; <<>> DiG 9.11.3-1ubuntu1.1-Ubuntu <<>> www.cnmv.es
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 53370
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;www.cnmv.es. IN A
;; Query time: 105 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Thu Jun 28 17:33:30 CEST 2018
;; MSG SIZE rcvd: 40
据我所知,任何其他查询都可以正常工作。我的 DNS 服务器通过 DCHP 配置为 8.8.8.8 和 8.8.4.4(也尝试过静态配置,但没有结果)。
$ sudo systemd-resolve --status
Global
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test
Link 3 (wlp3s0)
Current Scopes: none
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 2 (enp2s0)
Current Scopes: DNS
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 8.8.8.8
8.8.4.4
@
但是如果我尝试使用dig 参数直接向 DNS 服务器 8.8.8.8 询问,我会得到结果。
$ dig @8.8.8.8 www.cnmv.es
; <<>> DiG 9.11.3-1ubuntu1.1-Ubuntu <<>> @8.8.8.8 www.cnmv.es
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33002
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.cnmv.es. IN A
;; ANSWER SECTION:
www.cnmv.es. 0 IN CNAME internet.cnmv.es.
internet.cnmv.es. 9 IN A 5.40.196.142
internet.cnmv.es. 0 IN A 195.53.156.42
internet.cnmv.es. 0 IN A 88.84.92.42
internet.cnmv.es. 0 IN A 88.84.91.42
;; Query time: 107 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Jun 28 17:43:50 CEST 2018
;; MSG SIZE rcvd: 127
我尝试清理 DNS 缓存、重新启动机器、更改 DNS 名称服务器,但问题仍然存在。