Reverse problems

[keith at mail.telestream.com]

Actually that's not the case here. We've had these /24's for nearly 4
years and this is the first instance of this. They are authorative for the
IP's and always have been. We control the files and put their name servers
in the NS sections and they just slave the files from us. 
If you query both of the servers for an IP in either /24 they resolve
exactly as we have them setup, proving that they are pulling the proper
files and all is well. The question is why one of the /24's would not be
working if querying other name severs but the other would work. They are
both setup the same.
example:
Fist query my server, then the same IP on the server slaving our PTR's
then some remote server.

# nslookup
Default Server:  ns.telestream.com
Address:  205.238.4.3

> 205.238.16.154
Server:  ns.telestream.com
Address:  205.238.4.3

Name:    x.angledetailing.com
Address:  205.238.16.154

-----

> server c.ns.verio.net
Default Server:  c.ns.verio.net
Address:  129.250.35.33

> 205.238.16.154
Server:  c.ns.verio.net
Address:  129.250.35.33

Name:    x.angledetailing.com
Address:  205.238.16.154

-----

> server hendrix.aa.net
Default Server:  hendrix.aa.net
Address:  204.157.220.4

> 205.238.16.154
Server:  hendrix.aa.net
Address:  204.157.220.4

*** hendrix.aa.net can't find 205.238.16.154: Server failed





Keith


=================================
Keith W.

At the helm <for better or worse>
=================================


On Wed, 5 Jul 2000, Tony Huang wrote:

> 
> Your ISP didn't delegate the zone to your name servers yet.
> dig ns @c.ns.VERIO.NET 16.238.205.in-addr.arpa.
> 
> ; <<>> DiG 8.2 <<>> ns @c.ns.VERIO.NET 16.238.205.in-addr.arpa.
> ; (1 server found)
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2
> ;; QUERY SECTION:
> ;;      16.238.205.in-addr.arpa, type = NS, class = IN
> 
> ;; ANSWER SECTION:
> 16.238.205.in-addr.arpa.  4H IN NS  C.NS.VERIO.NET.
> 16.238.205.in-addr.arpa.  4H IN NS  U.NS.VERIO.NET.
> 
> ;; ADDITIONAL SECTION:
> C.NS.VERIO.NET.         10h4m42s IN A   129.250.35.33
> U.NS.VERIO.NET.         10h4m42s IN A   192.67.14.17
> 
> Joseph S D Yao wrote:
> 
> > On Wed, Jul 05, 2000 at 03:23:07PM -0700, keith at mail.telestream.com wrote:
> > > I have two /24's that my upstream is pulling ptr's from us for.
> > > The problem is that one of the /24's will reverse just fine where the
> > > other will not if querying from any ns not associated with verio or
> > > myself. I'm curious if this could be a problem on my end or there
> > > end. Here is all the info. Hope this isn't to general a question.
> > >
> > > /24 #1     205.238.16/24
> > > /24 #2     205.238.4/24
> > >
> > > My name server  ns.telestream.com
> > > Upstream name servers  c.ns.verio.net   u.ns.verio.net
> > >
> > > If I do a reverse lookup on any IP in either /24 they work fine if
> > > querying my server or either of the verio ns servers. If using some other
> > > ns to query the 205.238.16/24, it fails where the 205.238.4/24's
> > > will work just fine.
> > > Any idea's where the problem may be? Thanks for any and all info.
> > > If I've not given enough info let me know.
> >
> > 16.238.205.in-addr.arpa nameserver = NS1.VERIO.NET
> > 16.238.205.in-addr.arpa nameserver = NS2.VERIO.NET
> > 16.238.205.in-addr.arpa nameserver = NS0.VERIO.NET
> >
> > 4.238.205.in-addr.arpa  nameserver = NS1.VERIO.NET
> > 4.238.205.in-addr.arpa  nameserver = NS2.VERIO.NET
> > 4.238.205.in-addr.arpa  nameserver = NS0.VERIO.NET
> >
> > *** No address information is available for "1.16.238.205.in-addr.arpa."
> >
> > 1.4.238.205.in-addr.arpa        name = router.telestream.com
> > 4.238.205.in-addr.arpa  nameserver = C.NS.VERIO.NET
> > 4.238.205.in-addr.arpa  nameserver = U.NS.VERIO.NET
> > C.NS.VERIO.NET  internet address = 129.250.35.33
> > U.NS.VERIO.NET  internet address = 192.67.14.17
> >
> > It looks like Verio has an inconsistency in its name server lists for
> > 4.238.205.in-addr.arpa.  Nevertheless, Verio has a reverse-DNS entry
> > for 1.4.238.205.in-addr.arpa.
> >
> > I have either picked a bad number for the 16.* network, or Verio does
> > not have it entered correctly - or, possibly, in the right name servers.
> >
> > Good luck.
> >
> > --
> > Joe Yao                         jsdy at cospo.osis.gov - Joseph S. D. Yao
> > COSPO/OSIS Computer Support                                     EMT-B
> > -----------------------------------------------------------------------
> > This message is not an official statement of COSPO policies.
> 
> 
>