1. DNS/実装/KnotDNSresolver/親子同居
同居ゾーンの場合にzone cutを見逃すという不良があったが、現在は修正されている。
- cz, nic.cz で使われていることを指摘したので、すぐに対応した。（一行修正ですんだ）
qmail.jp ゾーンと a.b.c.d.qmail.jp ゾーンを同居させて、Knot-resolverの動作を見てみました。
問題がありそうです。 これでいいのか、よく考えてみます。 -- ToshinoriMaeno 2015-10-09 10:18:13
$ dnsqr ns a.b.c.d.qmail.jp
2 a.b.c.d.qmail.jp: 53 bytes, 1+1+0+0 records, response, noerror query: 2 a.b.c.d.qmail.jp answer: a.b.c.d.qmail.jp 600 NS f.ns.a.b.c.d.qmail.jp
この設定で、 dnsqr a www.xxx.a.b.c.d.qmail.jp をやってみた。
- a.b.c.d.qmail.jp ゾーンを発見できていない。 同居だと、当然のような気もしているが。
[plan] plan 'www.xxx.a.b.c.d.qmail.jp.' type 'A'
[resl] => root priming query [plan] plan '.' type 'NS' [resl] => querying: '198.41.0.4' score: 10 zone cut: '.' m12n: '.' type: 'NS' [iter] <= rcode: NOERROR [resl] => querying: '32.1.5.3' score: 10 zone cut: '.' m12n: 'Jp.' type: 'NS' [resl] optional: '198.41.0.4' score: 10 zone cut: '.' m12n: 'Jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '32.1.5.3' score: 10 zone cut: '.' m12n: 'jP.' type: 'NS' [resl] optional: '198.41.0.4' score: 10 zone cut: '.' m12n: 'jP.' type: 'NS' [plan] plan 'www.xxx.a.b.c.d.qmail.jp.' type 'A' [plan] plan 'a.root-servers.net.' type 'AAAA' [resl] => querying: '192.5.5.241' score: 10 zone cut: '.' m12n: 'neT.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '192.5.6.30' score: 10 zone cut: 'net.' m12n: 'ROOt-serVErs.NET.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '192.5.5.241' score: 245 zone cut: 'root-servers.net.' m12n: 'a.RoOT-sErvErs.nEt.' type: 'AAAA' [iter] <= rcode: NOERROR [resl] => querying: '32.1.5.3' score: 10 zone cut: '.' m12n: 'Jp.' type: 'NS' [resl] optional: '198.41.0.4' score: 10 zone cut: '.' m12n: 'Jp.' type: 'NS' [resl] => querying: '192.228.79.201' score: 10 zone cut: '.' m12n: 'JP.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'QMaIL.jP.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '14.192.44.5' score: 10 zone cut: 'qmail.jp.' m12n: 'd.qMAiL.JP.' type: 'NS' [iter] <= rcode: NXDOMAIN [iter] <= found cut, retrying with non-minimized name [resl] => querying: '14.192.44.5' score: 41 zone cut: 'qmail.jp.' m12n: 'Www.XXX.a.B.C.D.qmAIl.Jp.' type: 'A' [iter] <= rcode: NXDOMAIN [ pc ] => answer cached for TTL=900 [resl] finished: 4, queries: 2, mempool: 16392 B [resl] => NS unreachable, retrying over TCP [resl] => querying: '198.41.0.4' score: 172 zone cut: '.' m12n: 'JP.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'qmaIL.JP.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '14.192.44.5' score: 70 zone cut: 'qmail.jp.' m12n: 'D.QmAIl.Jp.' type: 'NS' [iter] <= rcode: NXDOMAIN [iter] <= found cut, retrying with non-minimized name [resl] => querying: '14.192.44.5' score: 55 zone cut: 'qmail.jp.' m12n: 'wWw.XXx.A.B.C.d.qMAIl.jp.' type: 'A' [iter] <= rcode: NXDOMAIN [ pc ] => answer cached for TTL=900 [resl] finished: 4, queries: 2, mempool: 32784 B