First, you can try ping the IP of the host As you can require IP address from DNS, that is not represent the IP(host) is activing.
2010/2/9 Tim Long <timw...@gmail.com> > Hi, > > I recently upgraded my work computer to Fedora 12 and I am having a > weird DNS issue for an internal website in my organization. > > Performing a dig/nslookup for the web site returns a IP address but > trying to contact via a web browser/wget/telnet fails with a DNS error > (the actually web site and IP numbers are scrubbed) > ----- > ~]$ nslookup www.site.com > Server: ###.###.###.### > Address: ###.###.###.####53 > > Non-authoritative answer: > Name: www.site.com > Address: ***.***.***.*** > > ~]$ telnet www.site.com 80 > telnet: www.site.com: Temporary failure in name resolution > www.site.com: Host name lookup failure > ---- > > Everyone in our organization who has upgraded to Fedora 12 and is > running networking via DHCP has this issue. People with static IP > addresses don't have a problem. This issue seems to be specific to > only this server in the organization and did not occur with earlier > versions of Fedora. Also the nsswitch.conf files are stock standard > and haven't changed. > > We have done investigation and the issue might be related to the fact > that our main DNS servers are windows boxes. When we override the DNS > setting and point it at a pirate Unix (read stable!) DNS server in the > problem goes away. Another work around that has been found is to run > dnsmasq on the Fedora workstations. The problem is that these > workarounds is that they the break dynamic DNS system we have to run. > > Can anyone offer some help? Even some pointers to where to start > digging/debugging would be helpful because we are all stumped. > > Thanks, > > Tim Long. > > If it helps I have included the full output from dig for reference > > Querying the Window DNS server gives something like: > > ; <<>> DiG 9.6.1-P3-RedHat-9.6.1-16.P3.fc12 <<>> ###.###.###.### > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24111 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;###.###.###.###. IN A > > ;; ANSWER SECTION: > ###.###.###.###. 11 IN A ***.***.***.*** > > ;; Query time: 0 msec > ;; SERVER: ***.***.***.***#53(***.***.***.***) > ;; WHEN: Tue Feb 9 17:27:18 2010 > ;; MSG SIZE rcvd: 48 > > > Querying the pirate DNS server returns: > > ; <<>> DiG 9.6.1-P3-RedHat-9.6.1-16.P3.fc12 <<>> @134.178.6.5###.###.###.### > ; (1 server found) > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54136 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 > > ;; QUESTION SECTION: > ;###.###.###.###. IN A > > ;; ANSWER SECTION: > ###.###.###.###. 9 IN A ***.***.***.*** > > ;; AUTHORITY SECTION: > ###.###.###.###. 600 IN NS ***.***.***.***. > ###.###.###.###. 600 IN NS ***.***.***.***. > > ;; ADDITIONAL SECTION: > ###.###.###.###. 600 IN A ***.***.***.*** > ###.###.###.###. 600 IN A ***.***.***.*** > > ;; Query time: 1 msec > ;; SERVER: ***.***.***.***#53(***.***.***.***) > ;; WHEN: Tue Feb 9 17:39:11 2010 > ;; MSG SIZE rcvd: 136 > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Guidelines: > http://fedoraproject.org/wiki/Communicate/MailingListGuidelines > -- Best Regards August
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