DNS Server : Start BIND and Verify Resolution2019/04/24

	Restart BIND to take effect changes and make sure it's no ploblem.
[1]	Change DNS setting to refer to local DNS.

root@dlp:~#

vi /etc/netplan/01-netcfg.yaml

# change to own

    nameservers:
        addresses: [10.0.0.30]

root@dlp:~#

netplan apply

root@dlp:~#

systemctl restart bind9

[2]	Try to resolv Name or Address normally.

root@dlp:~#

dig dlp.srv.world.


; <<>> DiG 9.11.5-P1-1ubuntu2-Ubuntu <<>> dlp.srv.world.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1334
;; 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.          86400   IN      A       10.0.0.30

;; Query time: 1 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Wed Apr 24 19:28:13 JST 2019
;; MSG SIZE  rcvd: 58

root@dlp:~#

dig -x 10.0.0.30


; <<>> DiG 9.11.5-P1-1ubuntu2-Ubuntu <<>> -x 10.0.0.30
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10508
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, 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. 86400   IN      PTR     dlp.srv.world.

;; Query time: 2 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Wed Apr 24 19:28:58 JST 2019
;; MSG SIZE  rcvd: 78

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