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h.root-servers.net returning false negatives (fwd)
FYI, below is a copy of a message I sent to the appropriate people. I guess that this time it isn't as bad since it is at least possible that there were automated scripts that didn't detect this, since it is only happening for certain domains. Expect sporadic difficulties resolving names for domains that are impacted if you happen to talk to h.root-servers.net. ---------- Forwarded message ---------- Date: Wed, 13 Jan 1999 09:58:50 -0800 (PST) From: Marc Slemko <[email protected]> Subject: h.root-servers.net returning false negatives for some .com domains, and possibly others. eg. [email protected]:~$ dig stocksite.com ns @h.root-servers.net ; <<>> DiG 8.1 <<>> stocksite.com ns @h.root-servers.net ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10 ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUERY SECTION: ;; stocksite.com, type = NS, class = IN ;; AUTHORITY SECTION: COM. 1D IN SOA A.ROOT-SERVERS.NET. hostmaster.INTERNIC.NET. ( 1999011105 ; serial 30M ; refresh 15M ; retry 1W ; expiry 1D ) ; minimum ;; Total query time: 144 msec ;; FROM: alive.znep.com to SERVER: h.root-servers.net 18.104.22.168 ;; WHEN: Wed Jan 13 09:54:54 1999 ;; MSG SIZE sent: 31 rcvd: 108 Other examples include worldgate.com, znep.com, yahoo.com, etc. Not all domains are impacted. h.root-servers.net needs to be taken down ASAP since it is causing any queries for those domains that hit those servers to be given a false nxdomain. Also note that many or most of the root nameservers have a zone file a few days out of date (as does this one...) which may or may not be related.