When automatic bridging mode is configured, you can restrict the physical network adapters that a virtual switch bridges to.
To change automatic bridging settings, select OK., select the host network adapter(s) to automatically bridge, and click
By default, a virtual switch bridges to all active network adapters on the host system when it is configured for automatic bridging. The choice of which adapter to use is arbitrary.
To prevent a virtual switch from bridging to a particular physical network adapter, deselect the check box for that host network adapter.