DNS/実装/KnotDNSresolver/chikyuu.ac.jpについて、ここに記述してください。
%dnsq ns chikyu.ac.jp a.dns.jp
2 chikyu.ac.jp: 125 bytes, 1+0+3+2 records, response, noerror query: 2 chikyu.ac.jp authority: chikyu.ac.jp 86400 NS ns.chikyu.ac.jp authority: chikyu.ac.jp 86400 NS sigw.sinet.ad.jp authority: chikyu.ac.jp 86400 NS rpp.chikyu.ac.jp additional: ns.chikyu.ac.jp 86400 A 202.209.7.34 additional: rpp.chikyu.ac.jp 86400 A 202.209.7.46
%dnsq ns chikyu.ac.jp ns.chikyu.ac.jp
2 chikyu.ac.jp: 97 bytes, 1+2+0+2 records, response, authoritative, noerror query: 2 chikyu.ac.jp answer: chikyu.ac.jp 86400 NS rpp.chikyu.ac.jp answer: chikyu.ac.jp 86400 NS ns.chikyu.ac.jp additional: ns.chikyu.ac.jp 86400 A 202.209.7.34 additional: rpp.chikyu.ac.jp 86400 A 202.209.7.46
1. Knot Resolver
$ dig -t ns chikyu.ac.jp @127.0.0.3
; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> -t ns chikyu.ac.jp @127.0.0.3 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5661 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1452 ;; QUESTION SECTION: ;chikyu.ac.jp. IN NS ;; ANSWER SECTION: chikyu.ac.jp. 86399 IN NS ns.chikyu.ac.jp. chikyu.ac.jp. 86399 IN NS rpp.chikyu.ac.jp. chikyu.ac.jp. 86399 IN NS sigw.sinet.ad.jp. ;; Query time: 0 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: Thu Oct 08 15:12:10 JST 2015 ;; MSG SIZE rcvd: 104
2. log
[plan] plan 'chikyu.ac.jp.' type 'NS' [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'Ac.jp.' type: 'NS' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'Ac.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'Ac.jP.' type: 'NS' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'Ac.jP.' type: 'NS' [resl] => querying: '2001:200:c000::35' score: 10 zone cut: 'jp.' m12n: 'ac.jP.' type: 'NS' [resl] optional: '192.50.43.53' score: 10 zone cut: 'jp.' m12n: 'ac.jP.' type: 'NS' [plan] plan 'chikyu.ac.jp.' type 'NS' [resl] => querying: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'ac.Jp.' type: 'NS' [iter] <= rcode: NOERROR [iter] <= found cut, retrying with non-minimized name [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'CHIkyU.Ac.jp.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'CHIkyU.Ac.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:200:c000::35' score: 10 zone cut: 'jp.' m12n: 'Ac.Jp.' type: 'NS' [resl] optional: '192.50.43.53' score: 10 zone cut: 'jp.' m12n: 'Ac.Jp.' type: 'NS' [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'ac.Jp.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'ac.Jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'chikYU.ac.jP.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'chikYU.ac.jP.' type: 'NS' [resl] => querying: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'ChiKYU.Ac.Jp.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '202.209.7.34' score: 10 zone cut: 'chikyu.ac.jp.' m12n: 'chikyU.Ac.jP.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'ac.JP.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'ac.JP.' type: 'NS' [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'aC.jP.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'aC.jP.' type: 'NS' [plan] plan 'chikyu.ac.jp.' type 'NS' [ rc ] => satisfied from cache [iter] <= rcode: NOERROR [resl] finished: 4, queries: 1, mempool: 16392 B [resl] => NS unreachable, retrying over TCP [resl] => querying: '202.209.7.34' score: 10 zone cut: 'chikyu.ac.jp.' m12n: 'cHIKYu.aC.JP.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'ac.Jp.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'ac.Jp.' type: 'NS' [resl] => querying: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'AC.Jp.' type: 'NS' [iter] <= rcode: NOERROR [iter] <= found cut, retrying with non-minimized name [resl] => querying: '192.50.43.53' score: 10 zone cut: 'jp.' m12n: 'cHIkYu.aC.jp.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '202.209.7.34' score: 10 zone cut: 'chikyu.ac.jp.' m12n: 'chikyu.AC.JP.' type: 'NS' [iter] <= rcode: NOERROR [resl] finished: 4, queries: 1, mempool: 16392 B [resl] => querying: '202.209.7.46' score: 10 zone cut: 'chikyu.ac.jp.' m12n: 'ChiKyu.AC.jp.' type: 'NS' [iter] <= rcode: NOERROR [resl] finished: 4, queries: 1, mempool: 16392 B
返答をみると、sigw.sinet.ad.jp NSが残っている。なぜだろう。
- キャッシュ上のNSは書き換えられていないかも。
-- ToshinoriMaeno 2015-10-08 06:21:14