Preview Tool

Cisco Bug: CSCun33874 - DNS SERVFAIL when A RR for name server is expired with resol exception

Last Modified

Jun 20, 2016

Products (1)

  • Cisco Network Registrar

Known Affected Releases


Description (partial)

Queries for valid domains unexpectedly return SERVFAIL.

This only happens for domains with resolution exceptions when the cached NS record for the domain is valid and the cached A record for the name server is expired.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.