For example, I see
$ dig +no{cmd,comments,stats} mail.google.com @8.8.8.8
;mail.google.com. IN A
mail.google.com. 86312 IN CNAME googlemail.l.google.com.
googlemail.l.google.com. 212 IN A 216.58.219.229
$ dig +no{cmd,comments,stats} mail.google.com @127.0.0.53
;mail.google.com. IN A
mail.google.com. 321204 IN CNAME googlemail.l.google.com.
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Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1647178
Title:
systemd-resolved unable to resolve certain subdomains
Status in systemd package in Ubuntu:
Incomplete
Bug description:
After upgrade to systemd-resolved, certain very well known subdomains
are no longer resolved. Their TLD do resolve correctly. Example given
with mail.google.com and google.com
On xenial :
$ nslookup mail.google.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
mail.google.com canonical name = googlemail.l.google.com.
Name: googlemail.l.google.com
Address: 216.58.198.197
$ dig mail.google.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> mail.google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57929
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;mail.google.com. IN A
;; ANSWER SECTION:
mail.google.com. 441512 IN CNAME googlemail.l.google.com.
googlemail.l.google.com. 274 IN A 216.58.198.197
;; Query time: 14 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Sun Dec 04 18:12:43 CET 2016
;; MSG SIZE rcvd: 87
On Zesty using systemd-resolved :
# nslookup mail.google.com
Server: 10.0.3.1
Address: 10.0.3.1#53
Non-authoritative answer:
mail.google.com canonical name = googlemail.l.google.com.
# nslookup google.com
Server: 10.0.3.1
Address: 10.0.3.1#53
Non-authoritative answer:
Name: google.com
Address: 216.58.198.206
# dig mail.google.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> mail.google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10775
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;mail.google.com. IN A
;; ANSWER SECTION:
mail.google.com. 441414 IN CNAME googlemail.l.google.com.
;; Query time: 0 msec
;; SERVER: 10.0.3.1#53(10.0.3.1)
;; WHEN: Sun Dec 04 17:14:21 UTC 2016
;; MSG SIZE rcvd: 81
# dig google.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25303
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 160 IN A 216.58.198.206
;; Query time: 0 msec
;; SERVER: 10.0.3.1#53(10.0.3.1)
;; WHEN: Sun Dec 04 17:14:37 UTC 2016
;; MSG SIZE rcvd: 55
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