On Thu, Mar 29, 2018 at 12:16:48PM +0100, Tony Finch <dot@dotat.at> wrote a message of 15 lines which said:
Also the very amusing
Less amusing, for a DNS service, the brokenness of reverse service: % dig -x 1.1.1.1 ; <<>> DiG 9.10.3-P4-Debian <<>> -x 1.1.1.1 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 24536 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 4096 ;; QUESTION SECTION: ;1.1.1.1.in-addr.arpa. IN PTR ;; Query time: 516 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Mar 29 13:37:54 CEST 2018 ;; MSG SIZE rcvd: 49 % dig @ns1.apnic.net. NS 1.1.1.in-addr.arpa ; <<>> DiG 9.10.3-P4-Debian <<>> @ns1.apnic.net. NS 1.1.1.in-addr.arpa ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48493 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 4096 ;; QUESTION SECTION: ;1.1.1.in-addr.arpa. IN NS ;; AUTHORITY SECTION: 1.1.1.in-addr.arpa. 86400 IN NS ns7.cloudflare.com. 1.1.1.in-addr.arpa. 86400 IN NS ns3.cloudflare.com. 1.1.1.in-addr.arpa. 172800 IN NSEC 113.1.1.in-addr.arpa. NS RRSIG NSEC 1.1.1.in-addr.arpa. 172800 IN RRSIG NSEC 5 5 172800 ( 20180427150337 20180328140337 2371 1.in-addr.arpa. h44NAaTSpn5wvzTtddlUEKJ8+bikdaTDXnxh5M1bisO0 /NibM7iWfwcuaaWPvNeOutMdA0OBxGwbmErattfyXbRI KWrBWopBkr8+uVo7BgBYBa2SqY7PdUyYIt40PTjwnsrl lxBgaHMe1yz6qvQh2oljUJL45HkJnVWoHnuTRq8= ) ;; Query time: 317 msec ;; SERVER: 2001:dc0:2001:0:4608::25#53(2001:dc0:2001:0:4608::25) ;; WHEN: Thu Mar 29 13:38:05 CEST 2018 ;; MSG SIZE rcvd: 313 % dig @ns7.cloudflare.com -x 1.1.1.1 ; <<>> DiG 9.10.3-P4-Debian <<>> @ns7.cloudflare.com -x 1.1.1.1 ; (4 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 10538 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 512 ;; QUESTION SECTION: ;1.1.1.1.in-addr.arpa. IN PTR ;; Query time: 7 msec ;; SERVER: 2400:cb00:2049:1::a29f:606#53(2400:cb00:2049:1::a29f:606) ;; WHEN: Thu Mar 29 13:38:25 CEST 2018 ;; MSG SIZE rcvd: 49 % dig @ns3.cloudflare.com -x 1.1.1.1 ; <<>> DiG 9.10.3-P4-Debian <<>> @ns3.cloudflare.com -x 1.1.1.1 ; (4 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 27962 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 512 ;; QUESTION SECTION: ;1.1.1.1.in-addr.arpa. IN PTR ;; Query time: 6 msec ;; SERVER: 2400:cb00:2049:1::a29f:21#53(2400:cb00:2049:1::a29f:21) ;; WHEN: Thu Mar 29 13:38:33 CEST 2018 ;; MSG SIZE rcvd: 49