## page was renamed from watchNS/xw.qmail.jp/c.ns.xw.qmail.jp 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 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 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 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。  このログはどう読むのだろう。 -- ToshinoriMaeno <> 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)  qmail.jp NSに問い合わせしなおしているようにみえる。 $ 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 }}}