watchNS/dff.jpについて、ここに記述してください。
%dnsq ns dff.jp a.dns.jp
2 dff.jp: 164 bytes, 1+0+4+0 records, response, noerror query: 2 dff.jp authority: dff.jp 86400 NS ns-1229.awsdns-25.org authority: dff.jp 86400 NS ns-1910.awsdns-46.co.uk authority: dff.jp 86400 NS ns-600.awsdns-11.net authority: dff.jp 86400 NS ns-468.awsdns-58.com
%dnsq ns dff.jp ns-468.awsdns-58.com
2 dff.jp: 164 bytes, 1+4+0+0 records, response, authoritative, noerror query: 2 dff.jp answer: dff.jp 172800 NS ns-1229.awsdns-25.org answer: dff.jp 172800 NS ns-1910.awsdns-46.co.uk answer: dff.jp 172800 NS ns-468.awsdns-58.com answer: dff.jp 172800 NS ns-600.awsdns-11.net
www.dff.jp 1800 CNAME www-dff-jp-1210541330.ap-northeast-1.elb.amazonaws.com
%dnsq a www-dff-jp-1210541330.ap-northeast-1.elb.amazonaws.com u1.amazonaws.com
1 www-dff-jp-1210541330.ap-northeast-1.elb.amazonaws.com: 208 bytes, 1+0+4+0 records, response, noerror query: 1 www-dff-jp-1210541330.ap-northeast-1.elb.amazonaws.com authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-54.awsdns-06.com authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1325.awsdns-37.org authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-982.awsdns-58.net authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1683.awsdns-18.co.uk
1. elb ENT
以前はNXDOMAINを返していたような気がするのだが、現在はNoDataを返す。-- ToshinoriMaeno 2017-05-30 12:33:20
- qname minimisation でも動く。
%dnsq ns elb.amazonaws.com u1.amazonaws.com
2 elb.amazonaws.com: 107 bytes, 1+0+1+0 records, response, authoritative, noerror query: 2 elb.amazonaws.com authority: amazonaws.com 3593 SOA pdns1.ultradns.net hostmaster.amazon.com 2014061205 180 60 2592000 3593
%dnsq ns ap-northeast-1.elb.amazonaws.com u1.amazonaws.com
2 ap-northeast-1.elb.amazonaws.com: 186 bytes, 1+0+4+0 records, response, noerror query: 2 ap-northeast-1.elb.amazonaws.com authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-54.awsdns-06.com authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1325.awsdns-37.org authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-982.awsdns-58.net authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1683.awsdns-18.co.uk