nanog mailing list archives
Re: g.root-servers.net returns NXDOMAIN for com.
From: jmalcolm () uraeus com
Date: Fri, 4 Aug 2000 10:13:12 -0400 (EDT)
Chris Adams writes:
Do you see g.root-servers.net listed? Then why are you asking it about com?
Because it is a root server. Note its appearance in the set of NS records below for ',', for example. If you ask g about 'com', and instead of giving an answer like the one a.ROOT-SERVERS.NET gave you, it says it *does not exist*, you will, correctly, assume that means it doesn't exist and neither do any subdomains. Hence, if you randomly query the one server that is returning NXDOMAIN for com, all com lookups will fail. Servers must be able to follow the delegation chain, which starts at the root. The fact that a.ROOT-SERVERS.NET thinks g.root-servers.net is not authoritative doesn't matter much if you ask g and it does think it is authoritative. jmalcolm@nodens [~] [main] 2-875> dig ns @a.ROOT-SERVERS.NET . ; <<>> DiG 8.2 <<>> ns @a.ROOT-SERVERS.NET . ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr aa rd; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 13 ;; QUERY SECTION: ;; ., type = NS, class = IN ;; ANSWER SECTION: . 6D IN NS A.ROOT-SERVERS.NET. . 6D IN NS H.ROOT-SERVERS.NET. . 6D IN NS C.ROOT-SERVERS.NET. . 6D IN NS G.ROOT-SERVERS.NET. . 6D IN NS F.ROOT-SERVERS.NET. . 6D IN NS B.ROOT-SERVERS.NET. . 6D IN NS J.ROOT-SERVERS.NET. . 6D IN NS K.ROOT-SERVERS.NET. . 6D IN NS L.ROOT-SERVERS.NET. . 6D IN NS M.ROOT-SERVERS.NET. . 6D IN NS I.ROOT-SERVERS.NET. . 6D IN NS E.ROOT-SERVERS.NET. . 6D IN NS D.ROOT-SERVERS.NET. ;; ADDITIONAL SECTION: A.ROOT-SERVERS.NET. 6D IN A 198.41.0.4 H.ROOT-SERVERS.NET. 6D IN A 128.63.2.53 C.ROOT-SERVERS.NET. 6D IN A 192.33.4.12 G.ROOT-SERVERS.NET. 6D IN A 192.112.36.4 F.ROOT-SERVERS.NET. 6D IN A 192.5.5.241 B.ROOT-SERVERS.NET. 6D IN A 128.9.0.107 J.ROOT-SERVERS.NET. 5w6d16h IN A 198.41.0.10 K.ROOT-SERVERS.NET. 5w6d16h IN A 193.0.14.129 L.ROOT-SERVERS.NET. 5w6d16h IN A 198.32.64.12 M.ROOT-SERVERS.NET. 5w6d16h IN A 202.12.27.33 I.ROOT-SERVERS.NET. 6D IN A 192.36.148.17 E.ROOT-SERVERS.NET. 6D IN A 192.203.230.10 D.ROOT-SERVERS.NET. 6D IN A 128.8.10.90 ;; Total query time: 313 msec ;; FROM: nodens.uraeus.com to SERVER: a.ROOT-SERVERS.NET 198.41.0.4 ;; WHEN: Fri Aug 4 10:06:31 2000 ;; MSG SIZE sent: 17 rcvd: 436
Current thread:
- Re: g.root-servers.net returns NXDOMAIN for com. bmanning (Aug 01)
- RE: g.root-servers.net returns NXDOMAIN for com. Roeland M.J. Meyer (Aug 01)
- Re: g.root-servers.net returns NXDOMAIN for com. bmanning (Aug 01)
- Re: g.root-servers.net returns NXDOMAIN for com. Michael Shields (Aug 01)
- <Possible follow-ups>
- g.root-servers.net returns NXDOMAIN for com. jmalcolm (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Chris Adams (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. jmalcolm (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Mark Milhollan (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Michael Shields (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Mark Milhollan (Aug 07)
- Re: g.root-servers.net returns NXDOMAIN for com. Chris Adams (Aug 04)
- RE: g.root-servers.net returns NXDOMAIN for com. Roeland M.J. Meyer (Aug 01)
- Re: g.root-servers.net returns NXDOMAIN for com. Jeffrey C. Ollie (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Greg A. Woods (Aug 04)
- Message not available
- RE: g.root-servers.net returns NXDOMAIN for com. Greg A. Woods (Aug 04)
- Re: g.root-servers.net returns NXDOMAIN for com. Josh Richards (Aug 08)