Beta4 has an intersting improvement - a host-only networking. Essentially, it is just a means to make your VMs and MacOS to communicate each other without the need of any bridged networking. Say, you're out of the office travelling from USA to Europe and need to have a network connectivity between MacOS and the VMs. This beta has a small known issue - sometimes you have to enable it manually. To do it, 1. Open "System Preferences" on your MacOS 2. Click "Network" icon of "Internet & Network" group. 3. Select "Ethernet Adaptor (vi2)" in "Show" drop-down list 4. Click "TCP/IP" tab and select "Using DHCP" in "Configure IPv4" drop-down list 5. Click "Apply Now" button 6. Restart your computer Once enabled, it should work without any need to reconfigure.