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Identifying Queries From Default DNS External Rresolvers For OCI-C External Compute Service Instances (Doc ID 2430538.1)

Last updated on AUGUST 10, 2018

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Compute Cloud Service - Version N/A and later
Java Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Trying to identify external DNS resolution traffic coming from Oracle Cloud Infrastructure Classic (OCI-C) Compute-based service instance VM (e.g. Compute, DBaaS, JCS) cannot be made with confidence just from within the instances.

Failure to completely identify traffic originating from OCI-C Compute instances using source IP addresses, and the method chosen to identify traffic for traffic steering, can lead to unexpected results (sometimes answered correctly, sometimes not) if having DNS horizons.

Changes

 

Cause

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