nanog mailing list archives
Re: Re: Root DNS Server Issues?
From: "John M. Brown" <john () chagresventures com>
Date: Tue, 1 Oct 2002 17:20:02 -0700
Don't worry about being a DNS clunkhead. Though some on this list will banish you for trying to learn. The root servers are non-recursive. Otherwords they only answer for what they know. WHat you are asking for is a server to be recursive in its answer to your query. This is what a ISP"s server will do. What OS is your DNS server running ? If its a Unix version, then I could help via the phone if you would like. write me back privately with contact data. John Brown Le Geek On Tue, Oct 01, 2002 at 08:07:57PM -0400, John Neiberger wrote:
Forgive me for being a DNS clunkhead. <g> I honestly don't know much about it, but I thought I'd post this to the list because it did appear to be a problem with the root servers, which would be A Bad Thing (tm). Probable dumb question: if I do an nslookup from a desktop directed at a root server, should the name eventually resolve? Or, is a request to a root server from our DNS server a different kind of request? I have a feeling it is and that I'm barking up the wrong tree. That might explain why an nslookup directed at someone else's name server is working. Still, that would lead us back to the original problem. Our DNS server can't communicate with the root servers. Hmm.. Again, I apologize for being a total noob at this. I believe that I'm misunderstanding the symptoms and using the wrong tools to troubleshoot! Thanks to all, John ---- On Tue, 1 Oct 2002, John M. Brown (john () chagresventures com) wrote:Root servers don't resolve names other than the TLD's. OTW they don't have data for www.yahoo.com only for .com which will point you towards the gTLD servers (listed below) which will point you towards Yahoo's name servers. What names are you trying to lookup ? John Brown Le Geek On Tue, Oct 01, 2002 at 07:46:00PM -0400, John Neibergerwrote:We're getting responses from the root servers, the namesjustaren't resolving. From a windows NT machine the erroris "Non-existent Domain". Ah, I just noticed something. The packet length for theDNSresponse is supposed to be 510 bytes but it's beingtruncatedto 128. What the heck would cause that?? John ---- On Tue, 1 Oct 2002, John M. Brown (john () chagresventures com) wrote:Here is for L, F also seems to reply. Tested from 8differentplaces on the net. OTW Transit splay on the test was 8differentproviders. Can you give a sample of the "errors" you are seeing? Got a sample DIG line ?? John Brown Le Geek %dig @l.root-servers.net com ns ; <<>> DiG 8.3 <<>> @l.root-servers.net com ns ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 13, AUTHORITY: 0,ADDITIONAL: 13;; QUERY SECTION: ;; com, type = NS, class = IN ;; ANSWER SECTION: com. 2D IN NS L.GTLD-SERVERS.NET.com. 2D IN NS F.GTLD-SERVERS.NET.com. 2D IN NS J.GTLD-SERVERS.NET.com. 2D IN NS K.GTLD-SERVERS.NET.com. 2D IN NS E.GTLD-SERVERS.NET.com. 2D IN NS M.GTLD-SERVERS.NET.com. 2D IN NS A.GTLD-SERVERS.NET.com. 2D IN NS G.GTLD-SERVERS.NET.com. 2D IN NS H.GTLD-SERVERS.NET.com. 2D IN NS C.GTLD-SERVERS.NET.com. 2D IN NS I.GTLD-SERVERS.NET.com. 2D IN NS B.GTLD-SERVERS.NET.com. 2D IN NS D.GTLD-SERVERS.NET.;; ADDITIONAL SECTION: L.GTLD-SERVERS.NET. 2D IN A 192.41.162.30 F.GTLD-SERVERS.NET. 2D IN A 192.35.51.30 J.GTLD-SERVERS.NET. 2D IN A 192.48.79.30 K.GTLD-SERVERS.NET. 2D IN A 192.52.178.30 E.GTLD-SERVERS.NET. 2D IN A 192.12.94.30 M.GTLD-SERVERS.NET. 2D IN A 192.55.83.30 A.GTLD-SERVERS.NET. 2D IN A 192.5.6.30 G.GTLD-SERVERS.NET. 2D IN A 192.42.93.30 H.GTLD-SERVERS.NET. 2D IN A 192.54.112.30 C.GTLD-SERVERS.NET. 2D IN A 192.26.92.30 I.GTLD-SERVERS.NET. 2D IN A 192.43.172.30 B.GTLD-SERVERS.NET. 2D IN A 192.33.14.30 D.GTLD-SERVERS.NET. 2D IN A 192.31.80.30 ;; Total query time: 89 msec ;; FROM: jedi.staff.chagres.net to SERVER: l.root-servers.net 198.32.64.12;; WHEN: Tue Oct 1 17:29:36 2002 ;; MSG SIZE sent: 21 rcvd: 453 % On Tue, Oct 01, 2002 at 07:08:37PM -0400, John Neibergerwrote:We seem to be getting name resolution errors when wequeryanyof the root servers, and this just started a hour or soago.Anyone else noticing a problem? John
Current thread:
- Re: Root DNS Server Issues?, (continued)
- Re: Root DNS Server Issues? John M. Brown (Oct 01)
- Re: Re: Root DNS Server Issues? John Neiberger (Oct 01)
- Re: Re: Root DNS Server Issues? David Van Duzer (Oct 01)
- Re: Re: Root DNS Server Issues? John M. Brown (Oct 01)
- Re: Root DNS Server Issues? Rodney Joffe (Oct 01)
- Re: Root DNS Server Issues? Valdis . Kletnieks (Oct 01)
- Re: Root DNS Server Issues? John M. Brown (Oct 01)
- Re: Re: Root DNS Server Issues? Adam McKenna (Oct 01)
- Re: Re: Root DNS Server Issues? John M. Brown (Oct 01)