Maintained by: NLnet Labs

[Unbound-users] Old or incorrect information returned?

Haw Loeung
Fri Nov 6 01:08:07 CET 2009


Hi,

We have received a few reports where domains have moved from one hosting 
provider to another and our resolvers (all running Unbound) has been returning 
old/incorrect information about these domains.

The 2 most recent reports are for the domains supre.com.au and ozcelebs.net. I 
have included dig results one of our staff members have done to show what's 
happening.

*supre.com.au (Tue Nov  3 09:24:11 2009)*

=====
$ dig supre.com.au  @syd-pow-dns2
 
 ; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> supre.com.au @syd-pow-dns2
 ;; global options:  printcmd
 ;; Got answer:
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59376
 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0
 
 ;; QUESTION SECTION:
 ;supre.com.au.            IN    A
 
 ;; ANSWER SECTION:
 supre.com.au.        19391    IN    A    164.80.66.11
 
 ;; AUTHORITY SECTION:
 supre.com.au.        12591    IN    NS    ns21.nextgen.net.
 supre.com.au.        12591    IN    NS    ns1.nextgen.net.
 supre.com.au.        12591    IN    NS    ns0.nextgen.net.
 supre.com.au.        12591    IN    NS    ns20.nextgen.net.
 
 ;; Query time: 194 msec
 ;; SERVER: 202.7.166.178#53(202.7.166.178)
 ;; WHEN: Tue Nov  3 09:24:11 2009
 ;; MSG SIZE  rcvd: 131
=====

*supre.com.au (Wed Nov  4 09:29:26 2009)*

=====
$ dig supre.com.au  @syd-pow-dns2
 
 ; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> supre.com.au @syd-pow-dns2
 ;; global options:  printcmd
 ;; Got answer:
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28899
 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0
 
 ;; QUESTION SECTION:
 ;supre.com.au.            IN    A
 
 ;; ANSWER SECTION:
 supre.com.au.        19100    IN    A    164.80.66.11
 
 ;; AUTHORITY SECTION:
 supre.com.au.        85456    IN    NS    ns21.nextgen.net.
 supre.com.au.        85456    IN    NS    ns20.nextgen.net.
 supre.com.au.        85456    IN    NS    ns1.nextgen.net.
 supre.com.au.        85456    IN    NS    ns0.nextgen.net.
 
 ;; Query time: 143 msec
 ;; SERVER: 202.7.166.178#53(202.7.166.178)
 ;; WHEN: Wed Nov  4 09:29:26 2009
 ;; MSG SIZE  rcvd: 131
=====

The TTL has already lapsed but it is still showing that the domain has been 
delegated to the old hosting providers nextgen.net when it should be 
cpanelhost.net.au and hyperservers.com.au as shown below:

=====
$ dig ns supre.com.au

;; ANSWER SECTION:
supre.com.au.           86400   IN      NS      ns1.cpanelhost.net.au.
supre.com.au.           86400   IN      NS      ns1.hyperservers.com.au.
supre.com.au.           86400   IN      NS      ns2.hyperservers.com.au.
supre.com.au.           86400   IN      NS      ns2.cpanelhost.net.au.
=====


Now for ozcelebs.net, here's the results of one done this morning:

=====
$ dig ozcelebs.net @syd-pow-dns1
 
 ; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> ozcelebs.net @syd-pow-dns1
 ;; global options:  printcmd
 ;; Got answer:
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34827
 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0
 
 ;; QUESTION SECTION:
 ;ozcelebs.net.            IN    A
 
 ;; ANSWER SECTION:
 ozcelebs.net.        10800    IN    A    83.223.106.9
 
 ;; AUTHORITY SECTION:
 ozcelebs.net.        86400    IN    NS    ns1.imakdynamic.com.
 ozcelebs.net.        86400    IN    NS    ns2.imakdynamic.com.
 
 ;; Query time: 434 msec
 ;; SERVER: 202.7.166.172#53(202.7.166.172)
 ;; WHEN: Fri Nov  6 09:46:32 2009
 ;; MSG SIZE  rcvd: 97
=====

The temporary fix we have in place right now is to reload unbound daily 
clearing out the cache. Wouter, can you help us look into this issue? Is there 
any other information I could provide to help?


Thanks,

Haw

-- 
Haw Loeung
Systems Administrator
TPG Internet
http://www.tpg.com.au
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