Guest

Preview Tool

Cisco Bug: CSCuq37275 - Split DNS doesn't affect TCP-based DNS requests

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases

15.3(3)M3

Description (partial)

Symptom:
router is acting as DNS proxy and customer is trying to block DNS request coming on an interface using split-dns. It is working fine for UDP based DNS requests but it is not working for TCP based DNS queries.

Conditions:
Issue occurs only when dns queries are TCP based.
Bug details contain sensitive information and therefore require a Cisco.com 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.