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DNS resolution of domain names used in PacketShaper matching rules not working
Article ID: 168316
Updated On:
Products
PacketShaper S-Series
Issue/Introduction
The dns names output shows lookup pending for all the domain names used for the class matching rules. It may work right after boot for some time but after 'dns refresh' it doesn't work. (This particular issue prevents proper classification and is critical).
# dns names
Domain Name IP Address TTL Age RQSNCRP Error
atestProblem.com <unknown> 0 228 02 lookup pending
testProblem.com <unknown> 0 228 02 lookup pending
www.bluecoat.com <unknown> 0 228 02 lookup pending
www.cisco.com <unknown> 0 228 02 lookup pending
www.facebook.com <unknown> 0 228 02 lookup pending
www.ge.com <unknown> 0 228 02 lookup pending
www.gm.com <unknown> 0 228 02 lookup pending
www.google.com <unknown> 0 228 02 lookup pending
www.honda.com <unknown> 0 228 02 lookup pending
www.mistake.com <unknown> 0 228 02 lookup pending
www.problem123.com <unknown> 0 228 02 lookup pending
www.toyota.com <unknown> 0 228 02 lookup pending
www.yahoo.com <unknown> 0 228 02 lookup pending
time.nist.gov <unknown> 0 228 02 lookup pending
<unknown> 10.78.52.27 0 228 02 lookup pending
While the automatic resolution and synchronization is not working, the manual lookup works just fine.
# dns lookup www.yahoo.com
Please wait, the hostname 'www.yahoo.com' is being resolved.........
lookup result:
Query: www.yahoo.com
Canonical Name: fd-fp3.wg1.b.yahoo.com
Alias: www.yahoo.com
Address: 206.190.36.105
Address: 206.190.36.45
Cause
The problem was due to a bug in the code, reported as a DNS resolution and synchronization issue.
Resolution
This bug has been fixed in PS 11.5.1.3. The DNS resolution and synchronization issue will no longer be a problem after upgrading to 11.5.1.3 or higher.
Feedback
Yes
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