A virtual network interface card. Each VNIC resides in a subnet in a VCN. An instance attaches to a VNIC to obtain a network connection into the VCN through that subnet. Each instance has a primary VNIC that is automatically created and attached during launch. You can add secondary VNICs to an instance after it’s launched. For more information, see Virtual Network Interface Cards (VNICs).

Each VNIC has a primary private IP that is automatically assigned during launch. You can add secondary private IPs to a VNIC after it’s created. For more information, see CreatePrivateIp and IP Addresses.

If you are an Oracle Cloud VMware Solution customer, you will have secondary VNICs that reside in a VLAN instead of a subnet. These VNICs have other differences, which are called out in the descriptions of the relevant attributes in the Vnic object. Also see Vlan.

To use any of the API operations, you must be authorized in an IAM policy. If you’re not authorized, talk to an administrator. If you’re an administrator who needs to write policies to give users access, see Getting Started with Policies.