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On the host (a MacBook Pro running macOS), it basically looks like this: IP address for en1: 192.168.104.102 (LAN, set by local DHCP-server) The second adapter will be used by the VM to access the hosts internet connection. The first adapter will be used by the host to access the VM. IP address for enp0s8: 10.0.3.15 (set by VirtualBox) In this example, the virtual network adapters on the guest VM (Ubuntu, Linux) will look like this: IP address for enp0s3: 192.168.100.2 (set manually) VirtualBox will automatically assign a IP address for this adapter. This one allows for the guest to access the Internet, using the host’s network access. Step #3: The second adapter will be of typ “NAT”.

Step #2: The first virtual network adapter will be of type “Host-only” and uses the virtual network adapter “vboxnet0”, which was created before, using the Host Network Manager.

In this example the DHCP-server stays disabled and the guest VM will be configured manually. Host and guest will be connected by virtual adapters using the same subnet. Step #1: Create a new virtual network adapter on the host. This way, the guest VM will be part of the host’s local network. If you don’t mind that the guest VM is exposed to the local network, it’s easier to use a single adapter in bridged network mode. This way, the host can share its internet connection with the guest VM. This will allow the guest VM to use the network access of the host system, without exposing itself directly to the host’s local network.

The IP address on the VM can be set manually or by using the integrated DHCP-server. This way, the host can access services running on the guest, like a web or database server. One of these virtual adapters will be a host-only adapter for bidirectional communication between host system and guest VM. To get this done, we are using two virtual network adapters on the guest VM and one on the host. This setup makes sense, if you don’t want to expose the VM to the rest of the host’s local network, but still want the guest to have Internet access. This short tip explains, how to connect the host system to the guest VM and allows Internet access for the guest at the same time, without using the bridged network mode.