1. watchNS/gtld-servers.net
Contents
2. gtld-server zone
net NS に問い合わせる：
$ dnsq ns gtld-servers.net a.gtld-servers.net
2 gtld-servers.net: 291 bytes, 1+0+4+8 records, response, noerror query: 2 gtld-servers.net authority: gtld-servers.net 172800 NS av1.nstld.com authority: gtld-servers.net 172800 NS av2.nstld.com authority: gtld-servers.net 172800 NS av3.nstld.com authority: gtld-servers.net 172800 NS av4.nstld.com additional: av1.nstld.com 172800 A 192.42.177.30 additional: av1.nstld.com 172800 28 \040\001\005\000\001$\000\000\000\000\000\000\000\000\0000 additional: av2.nstld.com 172800 A 192.42.178.30 additional: av2.nstld.com 172800 28 \040\001\005\000\001%\000\000\000\000\000\000\000\000\0000 additional: av3.nstld.com 172800 A 192.82.133.30 additional: av3.nstld.com 172800 28 \040\001\005\000\001&\000\000\000\000\000\000\000\000\0000 additional: av4.nstld.com 172800 A 192.82.134.30 additional: av4.nstld.com 172800 28 \040\001\005\000\001'\000\000\000\000\000\000\000\000\0000
ここのadditionalはどういう理由でついているのか。
- gtld-servers.netとnstld.comは兄弟ドメインではない。
だが、どちらもgtld-servers.netなどのゾーンサーバーである*.gtld-servers.netが保持するゾーンである。
- 同居。
$ dnsq ns gtld-servers.net av1.nstld.com 2 gtld-servers.net: 115 bytes, 1+4+0+0 records, response, authoritative, noerror query: 2 gtld-servers.net answer: gtld-servers.net 86400 NS av4.nstld.com answer: gtld-servers.net 86400 NS av2.nstld.com answer: gtld-servers.net 86400 NS av1.nstld.com answer: gtld-servers.net 86400 NS av3.nstld.com
ここにはadditionalがない。
gtld-servers.netとnstld.comゾーンとは同居なのだが。-- ToshinoriMaeno 2018-10-28 15:22:53
3. 記録
かつての設定はこうだった。
%dnsq ns gtld-servers.net a.gtld-servers.net
2 gtld-servers.net: 354 bytes, 1+0+8+10 records, response, noerror query: 2 gtld-servers.net authority: gtld-servers.net 172800 NS a2.gtld-servers.net authority: gtld-servers.net 172800 NS c2.gtld-servers.net authority: gtld-servers.net 172800 NS d2.gtld-servers.net authority: gtld-servers.net 172800 NS e2.gtld-servers.net authority: gtld-servers.net 172800 NS f2.gtld-servers.net authority: gtld-servers.net 172800 NS g2.gtld-servers.net authority: gtld-servers.net 172800 NS h2.gtld-servers.net authority: gtld-servers.net 172800 NS l2.gtld-servers.net additional: a2.gtld-servers.net 172800 A 192.5.6.31 additional: a2.gtld-servers.net 172800 28 \040\001\005\003\250>\000\000\000\000\000\000\000\002\0001 additional: c2.gtld-servers.net 172800 A 192.26.92.31 additional: c2.gtld-servers.net 172800 28 \040\001\005\003\203\353\000\000\000\000\000\000\000\002\0001 additional: d2.gtld-servers.net 172800 A 192.31.80.31 additional: e2.gtld-servers.net 172800 A 192.12.94.31 additional: f2.gtld-servers.net 172800 A 192.35.51.31 additional: g2.gtld-servers.net 172800 A 192.42.93.31 additional: h2.gtld-servers.net 172800 A 192.54.112.31 additional: l2.gtld-servers.net 172800 A 192.41.162.31
%dnsq a a2.gtld-servers.net a2.gtld-servers.net
1 a2.gtld-servers.net: 354 bytes, 1+1+8+9 records, response, authoritative, noerror query: 1 a2.gtld-servers.net answer: a2.gtld-servers.net 172800 A 192.5.6.31 authority: gtld-servers.net 259200 NS c2.gtld-servers.net authority: gtld-servers.net 259200 NS d2.gtld-servers.net authority: gtld-servers.net 259200 NS l2.gtld-servers.net authority: gtld-servers.net 259200 NS h2.gtld-servers.net authority: gtld-servers.net 259200 NS f2.gtld-servers.net authority: gtld-servers.net 259200 NS g2.gtld-servers.net authority: gtld-servers.net 259200 NS e2.gtld-servers.net authority: gtld-servers.net 259200 NS a2.gtld-servers.net additional: a2.gtld-servers.net 172800 28 \040\001\005\003\250>\000\000\000\000\000\000\000\002\0001 additional: c2.gtld-servers.net 172800 A 192.26.92.31 additional: c2.gtld-servers.net 172800 28 \040\001\005\003\203\353\000\000\000\000\000\000\000\002\0001 additional: d2.gtld-servers.net 172800 A 192.31.80.31 additional: e2.gtld-servers.net 172800 A 192.12.94.31 additional: f2.gtld-servers.net 172800 A 192.35.51.31 additional: g2.gtld-servers.net 172800 A 192.42.93.31 additional: h2.gtld-servers.net 172800 A 192.54.112.31 additional: l2.gtld-servers.net 172800 A 192.41.162.31
%dnsq a a.gtld-servers.net a2.gtld-servers.net ~
1 a.gtld-servers.net: 372 bytes, 1+1+8+10 records, response, authoritative, noerror query: 1 a.gtld-servers.net answer: a.gtld-servers.net 172800 A 192.5.6.30 authority: gtld-servers.net 259200 NS a2.gtld-servers.net authority: gtld-servers.net 259200 NS h2.gtld-servers.net authority: gtld-servers.net 259200 NS d2.gtld-servers.net authority: gtld-servers.net 259200 NS c2.gtld-servers.net authority: gtld-servers.net 259200 NS l2.gtld-servers.net authority: gtld-servers.net 259200 NS g2.gtld-servers.net authority: gtld-servers.net 259200 NS f2.gtld-servers.net authority: gtld-servers.net 259200 NS e2.gtld-servers.net additional: a2.gtld-servers.net 172800 A 192.5.6.31 additional: a2.gtld-servers.net 172800 28 \040\001\005\003\250>\000\000\000\000\000\000\000\002\0001 additional: c2.gtld-servers.net 172800 A 192.26.92.31 additional: c2.gtld-servers.net 172800 28 \040\001\005\003\203\353\000\000\000\000\000\000\000\002\0001 additional: d2.gtld-servers.net 172800 A 192.31.80.31 additional: e2.gtld-servers.net 172800 A 192.12.94.31 additional: f2.gtld-servers.net 172800 A 192.35.51.31 additional: g2.gtld-servers.net 172800 A 192.42.93.31 additional: h2.gtld-servers.net 172800 A 192.54.112.31 additional: l2.gtld-servers.net 172800 A 192.41.162.31