The Virtual Private Cloud (VPC) networking model for vSphere with Tanzu has a strict dependency on the High Availability (HA) mode of the upstream NSX Tier-0 gateway. VPCs require stateful services, such as Network Address Translation (NAT), which are only supported when the Tier-0 gateway is configured in Active-Standby mode. If the Tier-0 gateway is in Active/Active mode, which is designed for stateless Equal-Cost Multi-Path (ECMP) routing, it does not meet the prerequisites for VPC functionality. Consequently, any existing VPC Connectivity Profiles associated with that Tier-0 gateway are considered invalid and will not be presented in the vSphere Supervisor activation wizard.

B. The vSphere Supervisor control plane high-availability setting is a configuration choice made during the activation wizard, not a prerequisite that would prevent the wizard from loading network profiles.

C. Using the Default Project in NSX is a valid and common configuration for deploying VPCs; it is not a restrictive condition that would cause this issue.

D. The VPC Connectivity Profile is a prerequisite template used to enable VPC creation. The profile must be selectable before any default or user-created VPCs can be provisioned.

1. VMware vSphere 8.0 Documentation, vSphere with Tanzu Configuration and Management, Chapter 4: Networking for vSphere with Tanzu, Section: NSX Networking for vSphere with Tanzu.

The documentation states, "If you plan to use the NSX networking stack with the VPC model, the Tier-0 gateway must be configured in Active-Standby HA mode." This directly confirms that Active/Active mode is unsupported for the VPC model.

2. VMware NSX 4.1 Documentation, NSX Administration Guide, Chapter: NSX Virtual Private Cloud, Section: VPC Prerequisites.

This guide explicitly lists as a prerequisite: "The parent Tier-0 gateway must be in Active-Standby high-availability (HA) mode." This reinforces the requirement from the NSX product perspective.

3. VMware Cloud Foundation 5.1 Documentation, Planning and Preparation Guide, Section: Network Requirements for VMware Cloud Foundation.

While VCF automates deployment, it adheres to the component product requirements. The guide specifies that the NSX configuration, including Tier-0 gateways deployed for workload domains, must meet the requirements of the features to be enabled, such as vSphere with Tanzu with VPC networking. This implies adherence to the Active-Standby requirement.