Conditional DNS forwarding might not work as expected.

Products

• VMware VeloCloud SD-WAN

Issue/Introduction

Conditional DNS forwarding might not work as expected due to the use of an incorrect source interface.

Environment

VMware VeloCloud SD-WAN 5.2.3.x

Cause

If a customer has configured conditional DNS with the Edge using a loopback interface that is not advertised, and prefers to use a different interface, such as a VLAN interface, as the source, the VCO does offer an option to select a specific interface. However, the Edge will still default to using the loopback interface as the source instead of the VLAN interface. Since the loopback interface is not advertised, the DNS response will not reach the Edge, leading to a failure in the Conditional DNS resolution.

Resolution

The issue is tracked under bug ID 159532 and has been resolved in the following versions:

5.4.0.1, 6.0.1.0, 6.1.1.0, 6.4.0.0, 5.2.6.0, 5.2.4.3, 5.2.5.1, and 7.0.0.0.