[185608] in North American Network Operators' Group
[CenturyLink][Proto UDP] Blockage of UDP Outbound from Source Port 53
daemon@ATHENA.MIT.EDU (Jason Hellenthal)
Thu Oct 29 16:35:00 2015
X-Original-To: nanog@nanog.org
From: Jason Hellenthal <jhellenthal@dataix.net>
Date: Thu, 29 Oct 2015 15:34:56 -0500
To: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Could a CenturyLink network admin/engineer contact me off list.
We have multiple locations receiving DNS queries over UDP where we see =
the connections making into our server and back out to our CenturyLink =
edge routers but never completes back to the connecting client at =
multiple locations.
Connections Failing =46rom Digital Ocean NY, Time Warner WI, Rackspace =
DFW TX
(Hartford CT)# dig +short +novc @208.46.135.X domain.com A
(Cleveland OH)# dig +short +novc @65.112.236.X domain.com A
Connections from Chicago Rackspace to the above locations work as =
expected.
CenturyLink Orlando FL to Hartford CT or Cleveland OH, CenturyLink =
circuits work as expected.
Contact off list for domain and ip information used above.
Thanks
--=20
Jason Hellenthal
JJH48-ARIN
