Re: [tlug] DNS servers down?

["Jean-Christian Imbeault" <jean_christian@example.com>]

>From: Michael Doughty <Doughty_Michael@example.com>
>
>Try 'dig'.

I did. Unfortunately the "problem" disappear a few minutes after I started 
investigating. I'll post my dig info at the end of this message.

>Be more specific.  What makes you so sure it is the network and not the
>machine in question?  How are you testing?  Using one machine and
>switching between networks or two(hopefully more than two) different
>machines?

I have a linux box here that I can connect to two different networks (ISDN 
line or ADSL line). When on the ISDN line I have no problems telneting to 
the machine or seeing it (it's running a website) using a web browser. If I 
connect my machine to the ADSL line I cannot telnet to the machine nor see 
it's web pages.

So the remote machine si a live and well. But depending on which network I 
ma plugged into I can or cannot see it.

>What does /etc/resolv.conf look like?

search localdomain

>Is it just this one host (www.av-navi.co.jp) that you cannot lookup, or
>is that just one of many.

Yes, just that one remote host.

>Basically, run through a number of tests and paste in the results

Ok. Here are dig results. I don't know what they mean but they sure are 
different!


ADSL:
-----

; <<>> DiG 9.1.3 <<>> www.av-navi.co.jp
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50271
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;www.av-navi.co.jp.             IN      A

;; ANSWER SECTION:
www.av-navi.co.jp.      36953   IN      A       202.229.69.8

;; AUTHORITY SECTION:
av-navi.co.jp.          75421   IN      NS      ns.gps.co.jp.
av-navi.co.jp.          75421   IN      NS      rent.gps.co.jp.

;; ADDITIONAL SECTION:
ns.gps.co.jp.           80152   IN      A       202.229.69.6
rent.gps.co.jp.         14916   IN      A       202.229.69.4

;; Query time: 271 msec
;; SERVER: 192.168.254.254#53(192.168.254.254)
;; WHEN: Thu Jul 11 18:01:17 2002
;; MSG SIZE  rcvd: 123


ISDN:
-----

; <<>> DiG 9.1.3 <<>> www.av-navi.co.jp
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 38993
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.av-navi.co.jp.             IN      A

;; AUTHORITY SECTION:
av-navi.co.jp.          75421   IN      SOA     ns0.nic.ad.jp. 
bind-admin.nic.ad.jp 2002071102 3600 900 604800 86400

;; Query time: 2 msec
;; SERVER: 192.168.201.1#53(192.168.200.1)
;; WHEN: Thu Jul 11 18:02:44 2002
;; MSG SIZE  rcvd: 93


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