Search Again: Re: Assistance request From: Men & Mice Support Date: Friday, March 7, 2003 Time: 2:09:25 pm The behavior below is caused by reliance on the "trace" function in Dig version 9, which doesn't recognize lame delegations for some reason. The "loop" is simply an upwards (lame) delegation from the gblx.net servers, since they don't have a copy of the zone that's delegated to them. ____________________________________________________________________ Chris Buxton Men & Mice support@menandmice.com Making DNS Easy At 2:11 PM -0600 3/6/03, Jeff Folk wrote: >Interesting... There appears to be a loop in the reverse lookup: > >Reverse DNS for 64.215.249.70 >Generated by www.DNSstuff.com >Country: UNITED STATES > >Preparation: >The reverse DNS entry for an IP is found by reversing the IP, adding it to >"in-addr.arpa", and looking up the PTR record. >So, the reverse DNS entry for 64.215.249.70 is found by looking up the PTR >record for > 70.249.215.64.in-addr.arpa. >All DNS requests start by asking the root servers, and they let us know what >to do next. >See How Reverse DNS Lookups Work for more information. > >How I am searching: >Asking h.root-servers.net for 70.249.215.64.in-addr.arpa PTR record: > h.root-servers.net says to go to HENNA.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking HENNA.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > henna.arin.net says to go to NAME.SNV.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.SNV.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.snv.gblx.net says to go to M.ROOT-SERVERS.NET. (zone: (root)) >Asking M.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > m.root-servers.net says to go to BUCHU.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking BUCHU.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > buchu.arin.net says to go to NAME.JFK1.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.JFK1.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.jfk1.gblx.net says to go to D.ROOT-SERVERS.NET. (zone: (root)) >Asking D.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > d.root-servers.net says to go to GINSENG.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking GINSENG.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > ginseng.arin.net says to go to NAME.SNV.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.SNV.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.snv.gblx.net says to go to D.ROOT-SERVERS.NET. (zone: (root)) >Asking D.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > d.root-servers.net says to go to GINSENG.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking GINSENG.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > ginseng.arin.net says to go to NAME.SNV.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.SNV.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.snv.gblx.net says to go to H.ROOT-SERVERS.NET. (zone: (root)) >Asking H.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > h.root-servers.net says to go to arrowroot.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking arrowroot.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > arrowroot.arin.net says to go to NAME.ROC.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.ROC.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.roc.gblx.net says to go to B.ROOT-SERVERS.NET. (zone: (root)) >Asking B.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > b.root-servers.net says to go to BUCHU.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking BUCHU.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > buchu.arin.net says to go to NAME.SNV.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.SNV.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.snv.gblx.net says to go to L.ROOT-SERVERS.NET. (zone: (root)) >Asking L.ROOT-SERVERS.NET. for 70.249.215.64.in-addr.arpa PTR record: > l.root-servers.net says to go to BUCHU.ARIN.NET. (zone: >64.in-addr.arpa.) >Asking BUCHU.ARIN.NET. for 70.249.215.64.in-addr.arpa PTR record: > buchu.arin.net says to go to NAME.SNV.GBLX.NET. (zone: >215.64.in-addr.arpa.) >Asking NAME.SNV.GBLX.NET. for 70.249.215.64.in-addr.arpa PTR record: > name.snv.gblx.net says to go to B.ROOT-SERVERS.NET. (zone: (root)) > >Error: It looks like you've stuck me in a loop!. > >Details: >I am programmed to stop after 20 DNS queries, since most reverse DNS lookups >can be finished >after just 3 queries. It sounds like you're stuck in a loop. > > > > >---------------------------------------------------------------------------- >---- > >(C) Copyright 2000-2003 Computerized Horizons >----- Original Message ----- >From: "Those Wonderful Tech Care People at TeleSouth" ><techcare@telesouth1.com> >To: <quickdns-talk@lists.menandmice.com> >Sent: Thursday, March 06, 2003 1:58 PM >Subject: Assistance request > > >> Hello, >> >> We use DNS Expert to evaluate our setups. When setting up PTR records for >a >> client domain, we can not get DNS expert to recognize the records created >> within the reverse zone file. I wonder if someone would assist me. >> >> The domain in question is triadntr.net >> >> Any advice is greatly appreciated >> >> Thank you in advance, >> >> Steve Micheals >> TeleSouth Network Inc >> >> > > >--- >Outgoing mail is certified Virus Free. >Checked by AVG anti-virus system (http://www.grisoft.com). >Version: 6.0.459 / Virus Database: 258 - Release Date: 2/25/2003

Messages In This Thread: Assistance request by Those Wonderful Tech Care People at TeleSouth on Mar 6, 2003 at 11:59:05 am Re: Assistance request by Jeff Folk on Mar 6, 2003 at 12:13:12 pm Re: Assistance request by Men & Mice Support on Mar 7, 2003 at 2:09:25 pm