FreeBSD/bind-9.12.1/logについて、ここに記述してください。

1. Authoritative Answer

%dig -t ns flip.e-ontap.com @127.0.0.2                                  ~

; <<>> DiG 9.12.1 <<>> -t ns flip.e-ontap.com @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16453
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: dfb81451d2cd7c4f6882c3195acb7b678123bfac66d8f9ec (good)
;; QUESTION SECTION:
;flip.e-ontap.com.              IN      NS

;; ANSWER SECTION:
flip.e-ontap.com.       3600    IN      NS      ns.flip.e-ontap.com.

;; ADDITIONAL SECTION:
ns.flip.e-ontap.com.    3600    IN      A       150.42.6.1

;; Query time: 354 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Apr 09 23:40:39 JST 2018
;; MSG SIZE  rcvd: 106

; authanswer
flip.e-ontap.com.       608364  NS      ns.flip.e-ontap.com.
; additional
ns.flip.e-ontap.com.    608364  A       150.42.6.1

2. query 1

%dig -t a b1.flip.e-ontap.com @127.0.0.2                                ~

; <<>> DiG 9.12.1 <<>> -t a b1.flip.e-ontap.com @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12916
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 37b6646ffe397ae85b066e6e5acb7bdc6e1fe8b977d48b70 (good)
;; QUESTION SECTION:
;b1.flip.e-ontap.com.           IN      A

;; ANSWER SECTION:
b1.flip.e-ontap.com.    60      IN      A       150.42.6.1

;; Query time: 13 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Apr 09 23:42:36 JST 2018
;; MSG SIZE  rcvd: 92

3. 5分後

%dig -t a b3.flip.e-ontap.com @127.0.0.2                                ~

; <<>> DiG 9.12.1 <<>> -t a b3.flip.e-ontap.com @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43386
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 6ac0df87f78871fdd324c4445acb7cb73c8e1130963524b8 (good)
;; QUESTION SECTION:
;b3.flip.e-ontap.com.           IN      A

;; ANSWER SECTION:
b3.flip.e-ontap.com.    60      IN      A       150.42.6.1

;; Query time: 13 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Apr 09 23:46:15 JST 2018
;; MSG SIZE  rcvd: 92

23:46f%dig -t a b4.flip.e-ontap.com @127.0.0.2                                ~

; <<>> DiG 9.12.1 <<>> -t a b4.flip.e-ontap.com @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58665
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: fd47e2c23b082bd3707674655acb7ccec7b356de26d6565b (good)
;; QUESTION SECTION:
;b4.flip.e-ontap.com.           IN      A

;; ANSWER SECTION:
b4.flip.e-ontap.com.    60      IN      A       150.42.6.5

;; Query time: 13 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Apr 09 23:46:38 JST 2018
;; MSG SIZE  rcvd: 92

Authで置き換えられた。

4. NS 確認

%dig -t ns flip.e-ontap.com @127.0.0.2                                  ~

; <<>> DiG 9.12.1 <<>> -t ns flip.e-ontap.com @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50061
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 9f4c0f2ba25415f604dedd215acb7d2195bbaad7cb7150c7 (good)
;; QUESTION SECTION:
;flip.e-ontap.com.              IN      NS

;; ANSWER SECTION:
flip.e-ontap.com.       3159    IN      NS      ns.flip.internot.jp.

;; ADDITIONAL SECTION:
ns.flip.internot.jp.    84655   IN      A       150.42.6.5

;; Query time: 0 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Apr 09 23:48:01 JST 2018
;; MSG SIZE  rcvd: 122

dumpdb cache

; authauthority
flip.e-ontap.com.       607898  NS      ns.flip.internot.jp.
; authanswer