Recently I've encountered issue with My MBP Mid 2009 Wifi Card,so I bought USB adapter but the problem is that it is not compatible with OSX only So I somehow managed it to Connect my guest Virtual Box Windows 7 to Internet but I don't know how to share it with host, I've tried by Host-Only adapter but not sure how to share internet using that and I've tried some online articles but none of them shows how to setup Host OSX.
Currently I'm on OSX 10.11.6 Host and Windows 7 Guest.
Screenshots of my Host Only network Setup.