== DNS/oarc.net/txt == [[/trace]] [[/8.8.8.8]] [[/edns]] [[/dnscache]] [[/BIND]] [[/OpenDNS]] [[/DNSAdvantage]] 巨大な返答をどう扱うかというテストらしい。 だが、answer section ありの返答についているauthority/additional sectionの扱いにもよる。 -- ToshinoriMaeno <> == BIND == {{{ $ dig rs.dns-oarc.net txt @127.0.0.1 ; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt @127.0.0.1 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35218 ;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 60 IN CNAME rst.x487.rs.dns-oarc.net. rst.x487.rs.dns-oarc.net. 59 IN CNAME rst.x461.x487.rs.dns-oarc.net. rst.x461.x487.rs.dns-oarc.net. 58 IN CNAME rst.x466.x461.x487.rs.dns-oarc.net. rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT "Tested at 2017-07-13 11:19:15 UTC" rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT "39.110.135.12 DNS reply size limit is at least 487" rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT "39.110.135.12 sent EDNS buffer size 512" ;; Query time: 2704 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Jul 13 20:19:15 JST 2017 ;; MSG SIZE rcvd: 274 }}} == unbound == [[/unbound]] {{{ $ dig rs.dns-oarc.net txt @127.0.0.3 ; <<>> DiG 9.12.3 <<>> rs.dns-oarc.net txt @127.0.0.3 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20807 ;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1220 ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 515 IN CNAME rst.x1188.rs.dns-oarc.net. rst.x1188.rs.dns-oarc.net. 516 IN CNAME rst.x1198.x1188.rs.dns-oarc.net. rst.x1198.x1188.rs.dns-oarc.net. 516 IN CNAME rst.x1169.x1198.x1188.rs.dns-oarc.net. rst.x1169.x1198.x1188.rs.dns-oarc.net. 517 IN TXT "39.110.135.12 DNS reply size limit is at least 1198" rst.x1169.x1198.x1188.rs.dns-oarc.net. 517 IN TXT "39.110.135.12 sent EDNS buffer size 1220" rst.x1169.x1198.x1188.rs.dns-oarc.net. 517 IN TXT "Tested at 2019-02-28 14:25:05 UTC" ;; Query time: 0 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: 木 2月 28 23:26:28 JST 2019 ;; MSG SIZE rcvd: 279 }}} ---- $ dig rs.dns-oarc.net txt @127.0.0.2 {{{ ; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt @127.0.0.2 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 24546 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1220 ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; Query time: 0 msec ;; SERVER: 127.0.0.2#53(127.0.0.2) ;; WHEN: Thu Jul 13 20:21:08 JST 2017 ;; MSG SIZE rcvd: 44 }}} == kresd == [[/kresd]] $ dig rs.dns-oarc.net txt @127.0.0.3 {{{ ; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt @127.0.0.3 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22446 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: f6410df16acff348ba319827596757b159d6847ff55eb6be (good) ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 60 IN CNAME rst.x4090.rs.dns-oarc.net. ;; Query time: 818 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: Thu Jul 13 20:21:22 JST 2017 ;; MSG SIZE rcvd: 96 }}} {{{ $ dig rs.dns-oarc.net txt ; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 62843 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 61f760acb4047ab2e9bcb13a59686c832801eccd962ebab7 (good) ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 60 IN CNAME rst.x4090.rs.dns-oarc.net. rst.x4090.rs.dns-oarc.net. 59 IN CNAME rst.x4058.x4090.rs.dns-oarc.net. ;; Query time: 923 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: Fri Jul 14 16:02:27 JST 2017 ;; MSG SIZE rcvd: 130 }}} $ dig rst.x4090.rs.dns-oarc.net. {{{ ; <<>> DiG 9.11.1 <<>> rst.x4090.rs.dns-oarc.net. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 42856 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: b9a045904504ab24bcc8bc5f59686cd89650d42c9612502f (good) ;; QUESTION SECTION: ;rst.x4090.rs.dns-oarc.net. IN A ;; Query time: 415 msec ;; SERVER: 127.0.0.3#53(127.0.0.3) ;; WHEN: Fri Jul 14 16:03:52 JST 2017 ;; MSG SIZE rcvd: 82 }}}