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OCI Domain Name System (DNS) - Forwarding Condition Rules Priority for Private DNS (Doc ID 2943150.1)

Last updated on JULY 31, 2023

Applies to:

Oracle Cloud Infrastructure DNS - Version N/A and later
Information in this document applies to any platform.

Symptoms

Private DNS Forwarding Rules query stops, even if target is unreachable.

Changes

When there are multiple forwarding rules in a private DNS config that match the same set of domains, but have different IPs for resilience, the evaluation stops at the first rule and even if DNS queries cannot be resolved due to the unavailability of the IP mentioned in the rule, the next rule is not tried at all.
For example, DNS Forwarding Rules:

  1. abc.com 10.x.x.x
  2. abc.com 10.x.x.y

If 10.x.x.x is unavailable or can't resolve the DNS query, the next IP 10.x.x.y which is the backup DNS node is not used, and the DNS query times out.

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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