Hello Sujesh, If you want your VM instances to use internal IP addresses instead of external IP addresses, you can use Private services access <https://cloud.google.com/vpc/docs/private-access-options#service-networking> in a Virtual Private Cloud (VPC) network. You can read more about VPCs on the "Virtual Private Cloud (VPC) network overview" page <https://cloud.google.com/vpc/docs/vpc>.
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