DNS/実装/KnotDNSresolver/www.yanagi.ne.jpについて、ここに記述してください。
CNAME の扱いが分かる例: CNAMEの先を引き直している。
$ dig -t a www.yanagi.ne.jp @127.0.03 ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> -t a www.yanagi.ne.jp @127.0.03 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62933 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1452 ;; QUESTION SECTION: ;www.yanagi.ne.jp. IN A ;; ANSWER SECTION: www.yanagi.ne.jp. 3600 IN CNAME mail.yanagi.ne.jp. mail.yanagi.ne.jp. 3600 IN A 203.137.16.17 ;; Query time: 2802 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: Thu Oct 08 10:05:00 JST 2015 ;; MSG SIZE rcvd: 85
[system] interactive mode > [plan] plan 'www.yanagi.ne.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: '192.228.79.201' score: 10 zone cut: '.' m12n: 'JP.' type: 'NS' [iter] <= referral response, follow [resl] => querying: '2001:200:c000::35' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [resl] optional: '192.50.43.53' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:200:c000::35' score: 10 zone cut: 'jp.' m12n: 'Ne.JP.' type: 'NS' [resl] optional: '192.50.43.53' score: 10 zone cut: 'jp.' m12n: 'Ne.JP.' type: 'NS' [resl] => querying: '2001:dc4::1' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [resl] optional: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [plan] plan 'www.yanagi.ne.jp.' type 'A' [resl] => querying: '2001:dc4::1' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] optional: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:dc4::1' score: 10 zone cut: 'jp.' m12n: 'Ne.JP.' type: 'NS' [resl] optional: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'Ne.JP.' type: 'NS' [resl] => querying: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [iter] <= rcode: NOERROR [iter] <= found cut, retrying with non-minimized name [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'www.yANagi.ne.jp.' type: 'A' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'www.yANagi.ne.jp.' type: 'A' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:dc4::1' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] optional: '203.119.1.1' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'wWw.yAnAgI.Ne.Jp.' type: 'A' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'wWw.yAnAgI.Ne.Jp.' type: 'A' [resl] => querying: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'wWw.yaNAGi.Ne.jp.' type: 'A' [iter] <= referral response, follow [plan] plan 'nsas3.firstserver.ne.jp.' type 'AAAA' [resl] => querying: '203.119.40.1' score: 10 zone cut: 'jp.' m12n: 'Ne.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: 'Nsas3.FirStsErVEr.nE.jp.' type: 'AAAA' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'Nsas3.FirStsErVEr.nE.jp.' type: 'AAAA' [plan] plan 'www.yanagi.ne.jp.' type 'A' [plan] plan 'nsas3.firstserver.ne.jp.' type 'AAAA' [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:dc2::1' score: 10 zone cut: 'jp.' m12n: 'nE.jp.' type: 'NS' [resl] optional: '202.12.30.131' score: 10 zone cut: 'jp.' m12n: 'nE.jp.' type: 'NS' [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'Nsas3.FirSTSErVER.nE.Jp.' type: 'AAAA' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'Nsas3.FirSTSErVER.nE.Jp.' type: 'AAAA' [resl] => querying: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'nSas3.FIRsTsErVER.nE.jP.' type: 'AAAA' [iter] <= referral response, follow [resl] => querying: '164.46.1.1' score: 10 zone cut: 'firstserver.ne.jp.' m12n: 'nSas3.firSTSerVer.nE.JP.' type: 'AAAA' [iter] <= rcode: NOERROR [ pc ] => answer cached for TTL=180 [plan] plan 'nsas3.firstserver.ne.jp.' type 'A' [resl] => querying: '203.183.96.38' score: 10 zone cut: 'firstserver.ne.jp.' m12n: 'nSas3.FirstSErVer.NE.JP.' type: 'A' [iter] <= rcode: NOERROR [resl] => querying: '164.46.1.79' score: 10 zone cut: 'yanagi.ne.jp.' m12n: 'wWw.yAnaGi.ne.Jp.' type: 'A' [iter] <= rcode: NOERROR [resl] finished: 4, queries: 4, mempool: 32784 B [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'nE.JP.' type: 'NS' [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:502:ad09::5' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] optional: '156.154.100.5' score: 10 zone cut: 'jp.' m12n: 'Ne.jP.' type: 'NS' [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'Ne.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'nE.jp.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'nE.jp.' type: 'NS' [resl] => querying: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'nE.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: 'nSAS3.fIrSTServer.NE.jP.' type: 'AAAA' [iter] <= referral response, follow [resl] => querying: '203.183.96.38' score: 50 zone cut: 'firstserver.ne.jp.' m12n: 'NsAS3.fiRstsERVer.ne.jP.' type: 'AAAA' [iter] <= rcode: NOERROR [ pc ] => answer cached for TTL=180 [ rc ] => satisfied from cache [iter] <= rcode: NOERROR [iter] <= cname chain, following [plan] plan 'mail.yanagi.ne.jp.' type 'A' [ rc ] => satisfied from cache [iter] <= rcode: NOERROR [resl] finished: 4, queries: 3, mempool: 16392 B [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:240::53' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] optional: '210.138.175.244' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] => querying: '2001:2f8:0:100::153' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] optional: '150.100.6.8' score: 10 zone cut: 'jp.' m12n: 'NE.jp.' type: 'NS' [resl] => NS unreachable, retrying over TCP [resl] => querying: '2001:2f8:0:100::153' score: 10 zone cut: 'jp.' m12n: 'NE.jP.' type: 'NS' [resl] optional: '150.100.6.8' score: 10 zone cut: 'jp.' m12n: 'NE.jP.' type: 'NS' [resl] => querying: '150.100.6.8' score: 10 zone cut: 'jp.' m12n: 'NE.Jp.' type: 'NS' [iter] <= rcode: NOERROR [iter] <= found cut, retrying with non-minimized name [resl] => querying: '203.119.1.1' score: 36 zone cut: 'jp.' m12n: 'wwW.YanaGI.NE.JP.' type: 'A' [iter] <= referral response, follow [plan] plan 'nsas4.firstserver.ne.jp.' type 'AAAA' [resl] => querying: '203.183.96.38' score: 62 zone cut: 'firstserver.ne.jp.' m12n: 'NSas4.FirstserVER.ne.jP.' type: 'AAAA' [iter] <= rcode: NOERROR [ pc ] => answer cached for TTL=180 [ rc ] => satisfied from cache [iter] <= rcode: NOERROR [iter] <= cname chain, following [plan] plan 'mail.yanagi.ne.jp.' type 'A' [ rc ] => satisfied from cache [iter] <= rcode: NOERROR [resl] finished: 4, queries: 3, mempool: 16392 B