watchNS/xw.qmail.jp/c.ns.xw.qmail.jpについて、ここに記述してください。

/log2

/log-knot

/pdns-recursor 検討中 (case randomizeもqname minimisationもあるかどうか不明)

unbound dig a c.ns.xw.qmail.jp

[1449798571] unbound[1072:0] info: resolving c.ns.xw.qmail.jp. A IN
[1449798571] unbound[1072:0] info: response for c.ns.xw.qmail.jp. A IN
[1449798571] unbound[1072:0] info: reply from <qmail.jp.> 14.192.44.5#53
[1449798571] unbound[1072:0] info: query response was REFERRAL
[1449798571] unbound[1072:0] info: resolving xw.qmail.jp. NS IN
[1449798571] unbound[1072:0] info: resolving xw.qmail.jp. NS IN
[1449798571] unbound[1072:0] info: response for c.ns.xw.qmail.jp. A IN
[1449798571] unbound[1072:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53
[1449798571] unbound[1072:0] info: query response was NXDOMAIN ANSWER
[1449798571] unbound[1072:0] info: response for c.ns.xw.qmail.jp. A IN
[1449798571] unbound[1072:0] info: reply from <xw.qmail.jp.> 14.192.44.29#53
[1449798571] unbound[1072:0] info: query response was NXDOMAIN ANSWER

二回問い合わせているようにも見えるが、実際は一度です。

-- ToshinoriMaeno 2015-12-11 01:56:44

xw.qmail.jp NS はキャッシュされていないのだろうか。(TTLが短いのを長くしよう)

$ dig ns xw.qmail.jp @127.0.0.2

; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> ns xw.qmail.jp @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26419
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;xw.qmail.jp.                   IN      NS

;; ANSWER SECTION:
xw.qmail.jp.            82262   IN      CNAME   www.qmail.jp.

;; AUTHORITY SECTION:
qmail.jp.               1604    IN      SOA     a.ns.qmail.jp. hostmaster.m.qmail.jp. 1449757359 16384 2048 1048576 2560

;; Query time: 0 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Fri Dec 11 10:57:25 JST 2015
;; MSG SIZE  rcvd: 112

MoinQ: watchNS/qmail.jp/xw.qmail.jp/c.ns.xw.qmail.jp (last edited 2022-04-01 07:30:30 by ToshinoriMaeno)