1. watchNS/tamapack.co.jp

• DNS Cookies server

cookieを使うと、NSが得られないという現象がおきている。

• FORMERRを返してくる。

%dnsq ns tamapack.co.jp a.dns.jp

2 tamapack.co.jp:
102 bytes, 1+0+2+1 records, response, noerror
query: 2 tamapack.co.jp
authority: tamapack.co.jp 86400 NS ns-tk012.ocn.ad.jp
authority: tamapack.co.jp 86400 NS akishima1.tamapack.co.jp
additional: akishima1.tamapack.co.jp 86400 A 210.160.154.162

%dnsq ns tamapack.co.jp ns-tk012.ocn.ad.jp

2 tamapack.co.jp:
86 bytes, 1+2+0+0 records, response, authoritative, noerror
query: 2 tamapack.co.jp
answer: tamapack.co.jp 3600 NS akishima1.tamapack.co.jp
answer: tamapack.co.jp 3600 NS ns-tk012.ocn.ad.jp

%dnsq ns tamapack.co.jp akishima1.tamapack.co.jp

2 tamapack.co.jp:
102 bytes, 1+2+0+1 records, response, authoritative, weird ra, noerror
query: 2 tamapack.co.jp
answer: tamapack.co.jp 3600 NS akishima1.tamapack.co.jp
answer: tamapack.co.jp 3600 NS ns-tk012.ocn.ad.jp
additional: akishima1.tamapack.co.jp 3600 A 210.160.154.162

2. dig (cookies)

NSが取り出せない。

$ dig @akishima1.tamapack.co.jp -t ns tamapack.co.jp

; <<>> DiG 9.11.0-P3 <<>> @akishima1.tamapack.co.jp -t ns tamapack.co.jp
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 8387
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 9eb4b4f3a5bd410a (echoed)
;; QUESTION SECTION:
;tamapack.co.jp.                        IN      NS

;; Query time: 23 msec
;; SERVER: 210.160.154.162#53(210.160.154.162)
;; WHEN: Tue Apr 11 14:54:39 JST 2017
;; MSG SIZE  rcvd: 55

3. nocookie

$ dig +nocookie @akishima1.tamapack.co.jp -t ns tamapack.co.jp

; <<>> DiG 9.11.0-P3 <<>> +nocookie @akishima1.tamapack.co.jp -t ns tamapack.co.jp
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3166
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1280
;; QUESTION SECTION:
;tamapack.co.jp.                        IN      NS

;; ANSWER SECTION:
tamapack.co.jp.         3600    IN      NS      ns-tk012.ocn.ad.jp.
tamapack.co.jp.         3600    IN      NS      akishima1.tamapack.co.jp.

;; ADDITIONAL SECTION:
akishima1.tamapack.co.jp. 3600  IN      A       210.160.154.162

;; Query time: 13 msec
;; SERVER: 210.160.154.162#53(210.160.154.162)
;; WHEN: Tue Apr 11 14:55:31 JST 2017
;; MSG SIZE  rcvd: 113

4. +sit (BIND9.10)

%dig +sit @akishima1.tamapack.co.jp -t ns tamapack.co.jp ~

; <<>> DiG 9.10.4-P6 <<>> +sit @akishima1.tamapack.co.jp -t ns tamapack.co.jp
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 65426
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 34913e088fce5f2f (good)
;; QUESTION SECTION:
;tamapack.co.jp.                        IN      NS

;; Query time: 15 msec
;; SERVER: 210.160.154.162#53(210.160.154.162)
;; WHEN: Tue Apr 11 14:57:25 JST 2017
;; MSG SIZE  rcvd: 55