<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Yes i did for ns1, ns2, ns3 & ns4 as well. But when i do dig @127.0.0.1 i am not getting any result. Below is the output</DIV>
<DIV> </DIV>
<DIV>Really i dont have any idea why?</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>$ dig @127.0.0.1 fpdns.googlecode.com</DIV>
<DIV>; <<>> DiG 1-RedHat-9.3.6-16.P1.el5_7.1 <<>> @127.0.0.1 fpdns.googlecode.com<BR>; (1 server found)<BR>;; global options: printcmd<BR>;; Got answer:<BR>;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 37398<BR>;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0</DIV>
<DIV>;; QUESTION SECTION:<BR>;fpdns.googlecode.com. IN A</DIV>
<DIV>;; AUTHORITY SECTION:<BR>googlecode.com. 600 IN SOA localhost.googlecode.com. root.localhost. 2 10800 900 604800 86400</DIV>
<DIV>;; Query time: 0 msec<BR>;; SERVER: 127.0.0.1#53(127.0.0.1)<BR>;; WHEN: Fri Jan 13 08:12:21 2012<BR>;; MSG SIZE rcvd: 98<BR><BR>--- On <B>Fri, 13/1/12, Lyle Giese <I><lyle@lcrcomputer.net></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Lyle Giese <lyle@lcrcomputer.net><BR>Subject: Re: Name resolution issue on one domain<BR>To: <BR>Cc: bind-users@lists.isc.org<BR>Date: Friday, 13 January, 2012, 1:05 AM<BR><BR>
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<DIV>I am going to 'assume' that you also did a dig query against the other three google.com servers and they all answered satisfactorily. But if you did not, you need to query ns3 & ns4, you already got good answer from ns1 and ns2<BR><BR>try:<BR><BR>dig @127.0.0.1 fpdns.googlecode.com<BR><BR>What program is running on 127.0.0.1 udp port 53?<BR><BR><BR><BR><BR>On 01/12/12 12:54, babu dheen wrote:
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<DIV>Dear Lyle,</DIV>
<DIV> </DIV>
<DIV> Below method works fine but when i give again nslookup fpdns.googlecode.com , i am not getting any response.</DIV>
<DIV> </DIV>
<DIV> What could be the issue?</DIV>
<DIV> </DIV>
<DIV>Below is the complete result output</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>]$ dig +trace fpdns.googlecode.com</DIV>
<DIV>; <<>> DiG 1-RedHat-9.3.6-16.P1.el5_7.1 <<>> +trace fpdns.googlecode.com<BR>;; global options: printcmd<BR>. 454976 IN NS b.root-servers.net.<BR>. 454976 IN NS c.root-servers.net.<BR>. 454976 IN NS
d.root-servers.net.<BR>. 454976 IN NS e.root-servers.net.<BR>. 454976 IN NS f.root-servers.net.<BR>. 454976 IN NS g.root-servers.net.<BR>. 454976 IN NS
h.root-servers.net.<BR>. 454976 IN NS i.root-servers.net.<BR>. 454976 IN NS j.root-servers.net.<BR>. 454976 IN NS k.root-servers.net.<BR>. 454976 IN NS
l.root-servers.net.<BR>. 454976 IN NS m.root-servers.net.<BR>. 454976 IN NS a.root-servers.net.<BR>;; Received 272 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms</DIV>
<DIV>com. 172800 IN NS f.gtld-servers.net.<BR>com. 172800 IN NS g.gtld-servers.net.<BR>com. 172800 IN NS j.gtld-servers.net.<BR>com. 172800 IN NS
c.gtld-servers.net.<BR>com. 172800 IN NS b.gtld-servers.net.<BR>com. 172800 IN NS m.gtld-servers.net.<BR>com. 172800 IN NS k.gtld-servers.net.<BR>com. 172800 IN NS
a.gtld-servers.net.<BR>com. 172800 IN NS i.gtld-servers.net.<BR>com. 172800 IN NS h.gtld-servers.net.<BR>com. 172800 IN NS l.gtld-servers.net.<BR>com. 172800 IN NS
e.gtld-servers.net.<BR>com. 172800 IN NS d.gtld-servers.net.<BR>;; Received 498 bytes from 192.228.79.201#53(b.root-servers.net) in 262 ms</DIV>
<DIV>googlecode.com. 172800 IN NS ns2.google.com.<BR>googlecode.com. 172800 IN NS ns1.google.com.<BR>googlecode.com. 172800 IN NS ns3.google.com.<BR>googlecode.com. 172800 IN NS ns4.google.com.<BR>;; Received 181 bytes from 192.35.51.30#53(f.gtld-servers.net) in 217 ms</DIV>
<DIV>fpdns.googlecode.com. 86400 IN CNAME googlecode.l.google.com.<BR>googlecode.l.google.com. 300 IN A 173.194.67.82<BR>;; Received 88 bytes from 216.239.34.10#53(ns2.google.com) in 130 ms</DIV>
<DIV><BR>#############</DIV>
<DIV>$ dig @ns1.google.com fpdns.googlecode.com</DIV>
<DIV>; <<>> DiG 1-RedHat-9.3.6-16.P1.el5_7.1 <<>> @ns1.google.com fpdns.googlecode.com<BR>; (1 server found)<BR>;; global options: printcmd<BR>;; Got answer:<BR>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24193<BR>;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0</DIV>
<DIV>;; QUESTION SECTION:<BR>;fpdns.googlecode.com. IN A</DIV>
<DIV>;; ANSWER SECTION:<BR>fpdns.googlecode.com. 86400 IN CNAME googlecode.l.google.com.<BR>googlecode.l.google.com. 300 IN A 173.194.67.82</DIV>
<DIV>;; Query time: 123 msec<BR>;; SERVER: 216.239.32.10#53(216.239.32.10)<BR>;; WHEN: Thu Jan 12 21:50:11 2012<BR>;; MSG SIZE rcvd: 88<BR>#############################3<BR>]$ nslookup<BR>> fpdns.googlecode.com<BR>Server: 127.0.0.1<BR>Address: 127.0.0.1#53</DIV>
<DIV>** server can't find fpdns.googlecode.com: NXDOMAIN<BR>> exit</DIV>
<DIV> </DIV>
<DIV><BR><BR>--- On <B>Thu, 12/1/12, Lyle Giese <I><A class=yiv2048872647moz-txt-link-rfc2396E href="http://in.mc1373.mail.yahoo.com/mc/compose?to=lyle@lcrcomputer.net" rel=nofollow target=_blank ymailto="mailto:lyle@lcrcomputer.net"><lyle@lcrcomputer.net></A></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Lyle Giese <A class=yiv2048872647moz-txt-link-rfc2396E href="http://in.mc1373.mail.yahoo.com/mc/compose?to=lyle@lcrcomputer.net" rel=nofollow target=_blank ymailto="mailto:lyle@lcrcomputer.net"><lyle@lcrcomputer.net></A><BR>Subject: Re: Name resolution issue on one domain<BR>To: <A class=yiv2048872647moz-txt-link-abbreviated href="http://in.mc1373.mail.yahoo.com/mc/compose?to=bind-users@lists.isc.org" rel=nofollow target=_blank ymailto="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</A><BR>Date: Thursday, 12 January, 2012, 8:15 PM<BR><BR>
<DIV id=yiv2048872647>
<DIV>From that machine, do a <BR><BR>dig +trace fpdns.googlecode.com <BR><BR>and analyze those results.<BR><BR>Then try <BR><BR>dig @ns1.google.com fpdns.googlecode.com <BR><BR>And repeat for the other authoritive name servers for that zone.<BR><BR>And realize that the 'issue' might be transitive, in other words here one minute, gone the next and that server cached an answer when the problem was present.<BR><BR>I can think of several things outside your control or your network that can cause this issue. Route to one of Google's name servers down. Your Internet connection was full and that traffic was dropped or delayed enough to time out the query.<BR><BR>Lyle Giese<BR>LCR Computer Services, Inc.<BR><BR>On 01/12/12 08:11, babu dheen wrote:
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<DIV>Hi,</DIV>
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<DIV>I can see only below line in the logs which is no more useful. Actully i would like to find out where exactly DNS query is blocked during query process</DIV>
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<DIV> </DIV>
<DIV><EM><STRONG>client 127.0.0.1#46547: view localhost_resolver: query: fpdns.googlecode.com IN<BR>A +<BR></STRONG></EM></DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV>babu<BR><BR>--- On <B>Thu, 12/1/12, Matus UHLAR - fantomas <I><A class=yiv2048872647moz-txt-link-rfc2396E href="http://in.mc1373.mail.yahoo.com/mc/compose?to=uhlar@fantomas.sk" rel=nofollow target=_blank><uhlar@fantomas.sk></A></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From: Matus UHLAR - fantomas <A class=yiv2048872647moz-txt-link-rfc2396E href="http://in.mc1373.mail.yahoo.com/mc/compose?to=uhlar@fantomas.sk" rel=nofollow target=_blank><uhlar@fantomas.sk></A><BR>Subject: Re: Name resolution issue on one domain<BR>To: <A class=yiv2048872647moz-txt-link-abbreviated href="http://in.mc1373.mail.yahoo.com/mc/compose?to=bind-users@lists.isc.org" rel=nofollow target=_blank>bind-users@lists.isc.org</A><BR>Date: Thursday, 12 January, 2012, 4:00 PM<BR><BR>
<DIV class=yiv2048872647plainMail>On 12.01.12 15:37, babu dheen wrote:<BR>> We have two gateway DNS server running in BIND. One DNS is using one ISP link and another DNS server is using another ISP link.<BR><BR>> Today i tried to resolve below URL from one DNS its not working whereas the same lookup is working fine another DNS.<BR><BR>> Non-authoritative answer:<BR>> Name: googlecode.l.google.com<BR>> Address: 173.194.69.82<BR>> Aliases: fpdns.googlecode.com<BR><BR>> Any idea as to why one GW DNS is not giving result. Except this domain, all other domain name lookup happening on the same DNS server.<BR><BR>> How can i find out the exact reason?<BR><BR>Start with searching in logs of the second server.<BR><BR>-- Matus UHLAR - fantomas, <A href="http://in.mc1373.mail.yahoo.com/mc/compose?to=uhlar@fantomas.sk" rel=nofollow target=_blank>uhlar@fantomas.sk</A> ; <A href="http://www.fantomas.sk/"
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