Gateway 12.1 - Issues with UDP based DNS traffic
Article ID: CTX258344
Updated On:
Description
DNS query which is sent on UDP packet is seen as malformed packet.
As a result, dns server sends format error response to ADC.
Resolution
This is a known issue seen in UDP based DNS query generated by ADC.
This bug is fixed in under NSHELP-18819 in 12.1 52.15
Problem Cause
As per the incorrect behavior it will try to insert incorrect value in additional record data field and is seen only in UDP based DNS query.
Additional Information
A workaround for this issue is also available. Customer can use TCP based DNS, if upgrade is not immediately possible.
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