Guest

Preview Tool

Cisco Bug: CSCvt93875 - DNS response processing fails with Umbrella enabled after socket leak observed

Last Modified

Oct 13, 2020

Products (1)

  • Cisco SD-WAN

Known Affected Releases

cedge-16.10.5

Description (partial)

Symptom:
A socket leak may be observed when Umbrella DNS is enabled for DNScrypt/DNS query redirectioni

Conditions:
Umbrella DNS is enabled and the DNS resolution of the Umbrella domain server (api.opendns.com) is successful but there is no route to the server IP returned. When this occurs, sockets are leaked (as seen from 'show sockets'), eventually leading to DNS response processing failures.
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.