| | Recommended Method | | --- | --- | | Testing network apps locally | Microsoft Loopback Adapter | | Running virtual machines (Hyper-V) | Hyper-V Virtual Switch | | Running VMs (VMware/VirtualBox) | Host-Only or NAT adapters from that software | | Privacy & encryption (VPN) | Let your VPN client install its own adapter | | Simulating a router or firewall | Multiple Loopback adapters (add via Device Manager repeatedly) | | Automating lab deployment | PowerShell + pnputil |