Hi Marco, i only partly agree with your oberservations.
zobel@dag:~$ dig nchc.org.tw ns ; <<>> DiG 9.10.3-P4-Debian <<>> nchc.org.tw ns ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47092 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 7 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;nchc.org.tw. IN NS ;; ANSWER SECTION: nchc.org.tw. 300 IN NS ns3.nchc.org.tw. nchc.org.tw. 300 IN NS ns4.nchc.org.tw. nchc.org.tw. 300 IN NS ns1.nchc.org.tw. nchc.org.tw. 300 IN NS ns2.nchc.org.tw. ;; ADDITIONAL SECTION: ns1.nchc.org.tw. 66267 IN AAAA 2001:e10:2000:16::1 ns2.nchc.org.tw. 77026 IN AAAA 2001:e10:2000:4::1 ns1.nchc.org.tw. 18070 IN A 140.110.16.1 ns2.nchc.org.tw. 42059 IN A 140.110.4.1 ns3.nchc.org.tw. 55875 IN A 140.110.96.2 ns4.nchc.org.tw. 29006 IN A 140.110.143.75 While i agree with you the you mentioned 2001:e10:2000:10::1 does not answer to DNS requests, 2001:e10:2000:16::1 and 2001:e10:2000:4::1 are working perfect from my machine at Hetzner in Germany. I poked the DNS admins here localy at DebConf18 to fix the glue record, though. Best regards, Martin -- Martin Zobel-Helas <zo...@debian.org> Debian System Administrator Debian & GNU/Linux Developer Debian Listmaster http://about.me/zobel Debian Webmaster GPG Fingerprint: 6B18 5642 8E41 EC89 3D5D BDBB 53B1 AC6D B11B 627B