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Cisco Bug: CSCup12388 - Implement caching of DNS CNAME records TTL

Last Modified

Sep 06, 2019

Products (1)

  • Cisco Web Security Appliance

Known Affected Releases

7.7.5-195 8.0.5-079

Description (partial)

Symptom:
504 error from WSA on a web server, which CNAME changed

Conditions:
Web server hostname is a CNAME with low ttl, but the A record retrieved in the past has ttl of high value
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