1. watchNS/000.co.jp

Knot resolver だと委譲情報が使われる。(BIND, Unboundとは異なる)

$ dig -t ns 000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> -t ns 000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8385
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 25d2e0dbaf719e7b3de6ec2958ff240559a88f8f60b9aed6 (good)
;; QUESTION SECTION:
;000.co.jp.                     IN      NS

;; ANSWER SECTION:
000.co.jp.              86400   IN      NS      ns1.dnsserver-jp.net.
000.co.jp.              86400   IN      NS      ns2.dnsserver-jp.net.

;; Query time: 295 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:25:09 JST 2017
;; MSG SIZE  rcvd: 118

tmaeno@tm:~$ dig 000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> 000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33551
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 85b66c737d28a41f1794732758ff241c0360fb96477dd28b (good)
;; QUESTION SECTION:
;000.co.jp.                     IN      A

;; ANSWER SECTION:
000.co.jp.              300     IN      A       110.34.58.136

;; Query time: 8 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:25:32 JST 2017
;; MSG SIZE  rcvd: 82

$ dig 000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> 000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16211
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: c3fb499c2fa6ad8772a4879d58ff243a4d8aaf7a9bed79aa (good)
;; QUESTION SECTION:
;000.co.jp.                     IN      A

;; ANSWER SECTION:
000.co.jp.              270     IN      A       110.34.58.136

;; Query time: 0 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:26:02 JST 2017
;; MSG SIZE  rcvd: 82

$ dig -t ns 000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> -t ns 000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29807
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: eb9e8e95a4fca1426a8853d958ff24409315b30345710dd1 (good)
;; QUESTION SECTION:
;000.co.jp.                     IN      NS

;; ANSWER SECTION:
000.co.jp.              86341   IN      NS      ns1.dnsserver-jp.net.
000.co.jp.              86341   IN      NS      ns2.dnsserver-jp.net.

;; Query time: 0 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:26:08 JST 2017
;; MSG SIZE  rcvd: 118

2. www.000.co.jp A query

返答を確認しておいて:

$ dnsq a www.000.co.jp ns1.dnsserver-jp.net.

1 www.000.co.jp:
126 bytes, 1+1+2+2 records, response, authoritative, noerror
query: 1 www.000.co.jp
answer: www.000.co.jp 300 A 110.34.58.136
authority: 000.co.jp 300 NS ns1.willnet.ne.jp
authority: 000.co.jp 300 NS ns2.willnet.ne.jp
additional: ns1.willnet.ne.jp 86400 A 123.108.1.106
additional: ns2.willnet.ne.jp 3600 A 123.108.2.218

$ dig www.000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> www.000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36649
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: affa4b9c4f0cbb043a559b2358ff246449cf7b8a260b6045 (good)
;; QUESTION SECTION:
;www.000.co.jp.                 IN      A

;; ANSWER SECTION:
www.000.co.jp.          300     IN      A       110.34.58.136

;; Query time: 8 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:26:44 JST 2017
;; MSG SIZE  rcvd: 86

$ dig -t ns 000.co.jp @127.0.0.3

; <<>> DiG 9.11.1 <<>> -t ns 000.co.jp @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51929
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 5e8215b19f4068087c95792858ff2483ca6984c4dfeb07f2 (good)
;; QUESTION SECTION:
;000.co.jp.                     IN      NS

;; ANSWER SECTION:
000.co.jp.              86274   IN      NS      ns1.dnsserver-jp.net.
000.co.jp.              86274   IN      NS      ns2.dnsserver-jp.net.

;; Query time: 0 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Tue Apr 25 19:27:15 JST 2017
;; MSG SIZE  rcvd: 118

UnboundはNSにns1.willnet.ne.jpなどを返してきますが、 これがどうやって入手したものかは未確認です。

-- ToshinoriMaeno 2017-04-25 12:00:19