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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical GTLD inconsistency, was: Re: AAAAs in the Root and /48 Filtering
On 1 feb 2008, at 20:22, Scalzo, Frank wrote: If you are having IPv6 reachability problems to the V6 IP addresses for Well, that part works ok. But I'm seeing significant slowdowns when depending on an IPv6-only nameserver, and it could be that this is the culprit: # dig B.GTLD-SERVERS.net. aaaa ; <<>> DiG 9.4.1-P1 <<>> B.GTLD-SERVERS.net. aaaa ;; global options: printcmd ;; connection timed out; no servers could be reached Now the A and B GTLD servers do have AAAA glue in the root responses: # dig @h.root-servers.net GTLD-SERVERS.net. ns ; <<>> DiG 9.4.1-P1 <<>> @h.root-servers.net GTLD-SERVERS.net. ns ; (2 servers found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25901 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 15 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;GTLD-SERVERS.net. IN NS ;; AUTHORITY SECTION: net. 172800 IN NS a.GTLD-SERVERS.net. net. 172800 IN NS b.GTLD-SERVERS.net. net. 172800 IN NS c.GTLD-SERVERS.net. net. 172800 IN NS d.GTLD-SERVERS.net. net. 172800 IN NS e.GTLD-SERVERS.net. net. 172800 IN NS f.GTLD-SERVERS.net. net. 172800 IN NS g.GTLD-SERVERS.net. net. 172800 IN NS h.GTLD-SERVERS.net. net. 172800 IN NS i.GTLD-SERVERS.net. net. 172800 IN NS j.GTLD-SERVERS.net. net. 172800 IN NS k.GTLD-SERVERS.net. net. 172800 IN NS l.GTLD-SERVERS.net. net. 172800 IN NS m.GTLD-SERVERS.net. ;; ADDITIONAL SECTION: a.GTLD-SERVERS.net. 172800 IN A 192.5.6.30 b.GTLD-SERVERS.net. 172800 IN A 192.33.14.30 c.GTLD-SERVERS.net. 172800 IN A 192.26.92.30 d.GTLD-SERVERS.net. 172800 IN A 192.31.80.30 e.GTLD-SERVERS.net. 172800 IN A 192.12.94.30 f.GTLD-SERVERS.net. 172800 IN A 192.35.51.30 g.GTLD-SERVERS.net. 172800 IN A 192.42.93.30 h.GTLD-SERVERS.net. 172800 IN A 192.54.112.30 i.GTLD-SERVERS.net. 172800 IN A 192.43.172.30 j.GTLD-SERVERS.net. 172800 IN A 192.48.79.30 k.GTLD-SERVERS.net. 172800 IN A 192.52.178.30 l.GTLD-SERVERS.net. 172800 IN A 192.41.162.30 m.GTLD-SERVERS.net. 172800 IN A 192.55.83.30 a.GTLD-SERVERS.net. 172800 IN AAAA 2001:503:a83e::2:30 b.GTLD-SERVERS.net. 172800 IN AAAA 2001:503:231d::2:30 ;; Query time: 324 msec ;; SERVER: 2001:500:1::803f:235#53(2001:500:1::803f:235) ;; WHEN: Tue Feb 5 10:47:51 2008 ;; MSG SIZE rcvd: 506 However, I'm thinking this is the reason why BIND isn't using that glue: # dig @2001:503:a83e::2:30 GTLD-SERVERS.net. ns ; <<>> DiG 9.4.1-P1 <<>> @2001:503:a83e::2:30 GTLD-SERVERS.net. ns ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48256 ;; flags: qr rd; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 8 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;GTLD-SERVERS.net. IN NS ;; ANSWER SECTION: GTLD-SERVERS.net. 172800 IN NS a2.nstld.com. GTLD-SERVERS.net. 172800 IN NS c2.nstld.com. GTLD-SERVERS.net. 172800 IN NS d2.nstld.com. GTLD-SERVERS.net. 172800 IN NS e2.nstld.com. GTLD-SERVERS.net. 172800 IN NS f2.nstld.com. GTLD-SERVERS.net. 172800 IN NS g2.nstld.com. GTLD-SERVERS.net. 172800 IN NS h2.nstld.com. GTLD-SERVERS.net. 172800 IN NS l2.nstld.com. ;; ADDITIONAL SECTION: a2.nstld.com. 172800 IN A 192.5.6.31 c2.nstld.com. 172800 IN A 192.26.92.31 d2.nstld.com. 172800 IN A 192.31.80.31 e2.nstld.com. 172800 IN A 192.12.94.31 f2.nstld.com. 172800 IN A 192.35.51.31 g2.nstld.com. 172800 IN A 192.42.93.31 h2.nstld.com. 172800 IN A 192.54.112.31 l2.nstld.com. 172800 IN A 192.41.162.31 ;; Query time: 204 msec ;; SERVER: 2001:503:a83e::2:30#53(2001:503:a83e::2:30) ;; WHEN: Tue Feb 5 10:49:39 2008 ;; MSG SIZE rcvd: 307 I.e., the roots and the GTLD servers disagree on who is authorative for gtld-servers.net. It would be good if this can be fixed.
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