Bridge virtual network interfaces
Bridging virtual network interfaces allows a virtual interface to connect to an outside network through a physical interface, such as Ethernet or Thunderbolt, making it appear as a normal host to the rest of the network.
Note: You can’t use bridging if the physical network device used for bridging is a wireless device.
Choose Apple menu > System Preferences, then click Network.
Click the Action pop-up menu , then choose Manage Virtual Interfaces.
Click the Add button , choose New Bridge, then select the interfaces to include in the bridge.
Click Create, then click Done.