[AusNOG] Brisbane Telstra DNS issues

Ryan Crouch ryan at apexn.com.au
Wed Jun 12 11:08:40 EST 2013


Telstra DSL customers can query any other recursive servers fine.



Google/Optus staples tested and working ok.



It's definitely the Telstra DNS hosts.



Ryan



*From:* Sean K. Finn [mailto:sean.finn at ozservers.com.au]
*Sent:* Wednesday, 12 June 2013 11:06 AM
*To:* 'Ryan Crouch'; ausnog at lists.ausnog.net
*Subject:* RE: [AusNOG] Brisbane Telstra DNS issues



IP connectivity is fine.



Probably better than normal. Getting rid of DNS kind of gets rid of
congestion one would imagine.



Try doing an NSLOOKUP and using a remote server and see if you can confirm
UDP is being blocked?



Sean.





*From:* Ryan Crouch [mailto:ryan at apexn.com.au <ryan at apexn.com.au>]
*Sent:* Wednesday, June 12, 2013 11:03 AM
*To:* Sean K. Finn; ausnog at lists.ausnog.net
*Subject:* RE: [AusNOG] Brisbane Telstra DNS issues



Confirmed we are seeing this too.



Getting SERVFAIL to the Telstra DNS servers from external queries and
Telstra customer connections.



IP Connectivity seems ok.



Ryan Crouch



*From:* AusNOG [mailto:ausnog-bounces at lists.ausnog.net] *On Behalf Of *Sean
K. Finn
*Sent:* Wednesday, 12 June 2013 10:50 AM
*To:* ausnog at lists.ausnog.net
*Subject:* [AusNOG] Brisbane Telstra DNS issues



Hi is anyone else experiencing Telstra DNS issues in Brisbane?



It appears as though someone at Telstra has blocked all UDP-Port53 requests
from any Telstra connection in Brisbane.



Not only can’t I resolve using Telstra’s Brisbane DNS, I can’t resolve any
other nameservers when using a Telstra ADSL Connection here in Sunny
Brisvegas.



This issue appears to be Widespread.



If someone from Telstra is Lurking, please unblock UDP port 53 as it’s kind
of essential for Internets to work.



Sean.
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