Ubuntu 20.04
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BIND : Verify Resolution
2020/05/03
[1] Restart BIND to apply changes.
root@dlp:~#
systemctl restart named

[2] Change DNS setting to refer to own DNS if need.
root@dlp:~#
vi /etc/netplan/01-netcfg.yaml
# change to self IP address

    nameservers:
        addresses: [10.0.0.30]
root@dlp:~#
netplan apply

[3] Verify Name and Address Resolution. If [ANSWER SECTION] is shown, that's OK.
root@dlp:~#
dig dlp.srv.world. 


; <<>> DiG 9.16.1-Ubuntu <<>> dlp.srv.world.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52909
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;dlp.srv.world.                 IN      A

;; ANSWER SECTION:
dlp.srv.world.          0       IN      A       10.0.0.30

;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Sun May 03 22:32:23 JST 2020
;; MSG SIZE  rcvd: 58
root@dlp:~#
dig -x 10.0.0.30 


; <<>> DiG 9.16.1-Ubuntu <<>> -x 10.0.0.30
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15558
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;30.0.0.10.in-addr.arpa.                IN      PTR

;; ANSWER SECTION:
30.0.0.10.in-addr.arpa. 0       IN      PTR     dlp.srv.world.
30.0.0.10.in-addr.arpa. 0       IN      PTR     dlp.
30.0.0.10.in-addr.arpa. 0       IN      PTR     dlp.local.

;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Sun May 03 22:33:22 JST 2020
;; MSG SIZE  rcvd: 118
Matched Content