A Kubernetes egress NetworkPolicy fails validation with an invalid CIDR error during an upgrade/install, referencing what looks like a hostname instead of an IP.

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Answer

Check your database connection string in the installation values file for a DNS hostname where a CIDR/IP block is expected — a hostname used where the network policy needs a static IP/CIDR produces exactly this kind of invalid-CIDR validation error, and switching to the resolved static IP has resolved it.

Documentation-based answer. Confirm the product and release before applying it. This answer has not been verified in an IFS environment.

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