[google-cloud-sql-discuss] Private IP address range for GCP Cloud SQL is ignored

I found here https://cloud.google.com/sql/docs/mysql/private-ip that this seems to be the correct behaviour:

After you have established a private services access connection, and created a Cloud SQL instance with private IP configured for that connection, the corresponding (internal) subnet and range used by the Cloud SQL service cannot be modified or deleted. This is true even if you delete the peering and your IP range. After the internal configuration is established, any Cloud SQL instance created in that same region and configured for private IP uses the original internal configuration.

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