Cisco Bug: CSCuq21426 - Inspect-DNS: PTR Query failed when DNS-Doctoring enabled

Last Modified

Feb 17, 2017

Products (1)

Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.0(4.18)

Description (partial)

Symptom:
revDNS response going through ASA is received for different IP address than original query.

Conditions:
ASA has nat configured with 'dns' keyword and there is revDNS query for mapped IP address used in this translation.

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