[MLB-WIRELESS] DNS for wireless = bad bad bad bad
korg at darkqueen.org
korg at darkqueen.org
Mon Mar 18 16:57:34 EST 2002
Hi all,
wireless.org.au was unavailable from melb uni for a few
hours today.
I think you will find that (unlike email MX records), the
secondary DNS servers really should be available most of the time
and they should give correct results __all__ of the time. Today,
1 is broken and 1 is giving wrong answers.
This might be causing some of the email problems... I know
that my uni machine couldnt get to wireless.org.au today.
As a sysadmin, Id look to fix DNS problems before looking at mail
problems.
Did someone forget to change an SOA/serial number or something?
Has the DNS moved recently?
cheers,
cam
PS: I know I should have made this post shorter, but given
recent content on this list, I figure someone may actually
learn how to use dig from mine and no other list members
were flamed in the making of this post :)
Lets look at telstra's thinking on wireless.org.au's ip
number (the 'A' line).
korg at nephilim ~/src/AditiTest $ dig @ns1.telstra.net wireless.org.au
; <<>> DiG 9.2.0rc3 <<>> @ns1.telstra.net wireless.org.au
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47866
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4,
ADDITIONAL: 4
;; QUESTION SECTION:
;wireless.org.au. IN A
^^^^^^^^^^^^^^^^
bad bad bad
;; AUTHORITY SECTION:
org.au. 66149 IN NS box2.aunic.net.
org.au. 66149 IN NS yalumba.connect.com.au.
org.au. 66149 IN NS ns.iinet.net.au.
org.au. 66149 IN NS ns3.regasia.com.
;; ADDITIONAL SECTION:
box2.aunic.net. 28800 IN A 203.202.150.20
yalumba.connect.com.au. 7974 IN A 203.8.183.1
ns.iinet.net.au. 36000 IN A 203.59.24.226
ns3.regasia.com. 121254 IN A 128.242.113.190
----------------------------------------
Ok, so no IP number.. nowonder I cant get to it.
Lets try those last two secondaries....
----------------------------------------
korg at nephilim ~/src/AditiTest $ dig @ns.iinet.net.au wireless.org.au
; <<>> DiG 9.2.0rc3 <<>> @ns.iinet.net.au wireless.org.au
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32856
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;wireless.org.au. IN A
;; AUTHORITY SECTION:
wireless.org.au. 86400 IN NS dns1.fisherstewart.com.
wireless.org.au. 86400 IN NS dns2.fisherstewart.com.
;; ADDITIONAL SECTION:
dns1.fisherstewart.com. 600 IN A 203.94.134.118
dns2.fisherstewart.com. 400 IN A 203.29.143.2
;; Query time: 91 msec
;; SERVER: 203.59.24.226#53(ns.iinet.net.au)
;; WHEN: Mon Mar 18 16:40:22 2002
;; MSG SIZE rcvd: 120
----------------------------------------
Oh, look at that.. 'NS' value.. hmmm. its not the same as
the telstra one... thats a bad thing. Probably means an old
DNS file somewhere? Why are there two seperate DNS records
for wireless.org.au?
Well on to the last one secondary.
----------------------------------------
korg at nephilim ~/src/AditiTest $ dig @ns2.regasia.com wireless.org.au
; <<>> DiG 9.2.0rc3 <<>> @ns2.regasia.com wireless.org.au
;; global options: printcmd
;; connection timed out; no servers could be reached
----------------------------------------
So, that'd be bad too then.
--
/ `Rev Dr' cameron.blackwood at darkqueen.org Roleplaying, virtual goth \
< http://darkqueen.org Poly, Linux/BSD Unix, C/C++, genetics, ATM >
\ [+61 3] 9809 1523[h] skeptic, Evil GM(tm). Sysadmin for hire /
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-- Louise Andrews Kent
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