of a security-aware recursive name server MUST set the DO bit when sending requests, regardless of the state of the DO bit in the initiating request received by the name server side." 16
;; AUTHORITY SECTION: small-is-beautiful.jp. 86400 IN NS d01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS g01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS a01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS ns.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS c01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS e01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS f01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. small-is-beautiful.jp. 86400 IN NS nsa.dns.jp. small-is-beautiful.jp. 86400 IN NS b01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. ;; ADDITIONAL SECTION: ns.small-is-beautiful.jp. 86400 IN A 150.42.6.4 nsa.dns.jp. 86400 IN A 203.119.1.4 a01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 b01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 c01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 d01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 e01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 f01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 g01234567890123456789012345678901234567890123456789012345678901.small-is-beautiful.jp. 86400 IN A 150.42.6.4 nsa.dns.jp. 86400 IN AAAA 2001:dc4::4 ;; Query time: 17 msec ;; SERVER: 203.119.1.1#53(203.119.1.1) ;; WHEN: 火 9 03 22:37:49 JST 2019 ;; MSG SIZE rcvd: 813 dns.jp. の権威サーバ Linux ならフラグメントさせられる メッセージサイズ
IN NS A: jp. IN NS a.dns.jp. Q: example.jp. IN NS A: example.jp. IN NS ns.example.jp. Q: www.example.jp. IN A A: www.example.jp. IN A 192.0.2.1 Q: www.example.jp. IN A A: www.example.jp. IN A 192.0.2.1