Mac OSX Virtual box running appliance copied from Windows
From https://www.virtualbox.org/ticket/7067:

On Linux I had to manually create the vboxnet0 interface:

$ vboxmanage hostonlyif create
then manually edit each .vbox file and change all lines:

&lt;HostOnlyInterface name="VirtualBox Host-Only Ethernet Adapter"/&gt;


to

&lt;HostOnlyInterface name="vboxnet0"/&gt;