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systemd 解析更改 dns cname 记录

tag-icon • tag-icon dns systemd-networkd
systemd 解析更改 dns cname 记录

我有一台装有 Arch Linux (4.7.2-1-ARCH) 的 PC。 PC 使用 DHCP 获取其 IP，但使用我通过 systemd-resolved 配置的不同 DNS 服务器。当我对具有 CNAME 记录的域使用 dig 命令时，关联的 A 记录丢失。如果我使用 dig 并手动配置服务器，则 A 记录就在那里。知道为什么 systemd-resolved 会改变 dns 记录吗？

如果您需要任何其他信息，请告诉我。

这是我的网络（systemd-networkd）配置

[Match]
Name=ens18

[Network]
DNS=10.0.0.18
DHCP=ipv4

[DHCPv4]
UseHostname=false
UseDNS=false

解决.conf：

# This is a static resolv.conf file for connecting local clients to
# systemd-resolved via its DNS stub listener on 127.0.0.53.
#
# Third party programs must not access this file directly, but only through the
# symlink at /etc/resolv.conf. To manage resolv.conf(5) in a different way,
# replace this symlink by a static file or a different symlink.
#
# See systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 127.0.0.53

挖 api.pushbullet.com：

; <<>> DiG 9.10.4-P2 <<>> api.pushbullet.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59038
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;api.pushbullet.com.        IN  A

;; ANSWER SECTION:
api.pushbullet.com. 186 IN  CNAME   ghs-svc-https-c573.ghs-ssl.googlehosted.com.

;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Son Sep 11 01:17:57 CEST 2016
;; MSG SIZE  rcvd: 101

挖[电子邮件受保护]：

; <<>> DiG 9.10.4-P2 <<>> api.pushbullet.com @10.0.0.18
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33081
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 13, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;api.pushbullet.com.        IN  A

;; ANSWER SECTION:
api.pushbullet.com. 184 IN  CNAME   ghs-svc-https-c573.ghs-ssl.googlehosted.com.
ghs-svc-https-c573.ghs-ssl.googlehosted.com. 282 IN A 72.14.247.65

;; AUTHORITY SECTION:
.           509182  IN  NS  j.root-servers.net.
.           509182  IN  NS  d.root-servers.net.
.           509182  IN  NS  a.root-servers.net.
.           509182  IN  NS  l.root-servers.net.
.           509182  IN  NS  g.root-servers.net.
.           509182  IN  NS  b.root-servers.net.
.           509182  IN  NS  m.root-servers.net.
.           509182  IN  NS  i.root-servers.net.
.           509182  IN  NS  f.root-servers.net.
.           509182  IN  NS  h.root-servers.net.
.           509182  IN  NS  e.root-servers.net.
.           509182  IN  NS  k.root-servers.net.
.           509182  IN  NS  c.root-servers.net.

;; Query time: 0 msec
;; SERVER: 10.0.0.18#53(10.0.0.18)
;; WHEN: Son Sep 11 01:17:59 CEST 2016
;; MSG SIZE  rcvd: 328

答案1

dig 命令的输出不同，因为它是不同的命令。

$ dig api.pushbullet.com @127.0.0.1

;; QUESTION SECTION:
;api.pushbullet.com.            IN      A

;; ANSWER SECTION:
api.pushbullet.com.     12      IN      CNAME   ghs-svc-https-c573.ghs-ssl.googlehosted.com.
ghs-svc-https-c573.ghs-ssl.googlehosted.com. 300 IN A 72.14.247.65

;; AUTHORITY SECTION:
.                       495764  IN      NS      g.root-servers.net.
.                       495764  IN      NS      e.root-servers.net.
.                       495764  IN      NS      l.root-servers.net.
.                       495764  IN      NS      j.root-servers.net.
.                       495764  IN      NS      i.root-servers.net.
.                       495764  IN      NS      d.root-servers.net.
.                       495764  IN      NS      a.root-servers.net.
.                       495764  IN      NS      m.root-servers.net.
.                       495764  IN      NS      k.root-servers.net.
.                       495764  IN      NS      f.root-servers.net.
.                       495764  IN      NS      b.root-servers.net.
.                       495764  IN      NS      h.root-servers.net.
.                       495764  IN      NS      c.root-servers.net.

;; Query time: 72 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Son Sep 11 12:23:11 CEST 2016
;; MSG SIZE  rcvd: 328

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