I have searched and searched for an answer to this question and found nothing that works. I am running parallels 13 with a windows 10 installation in shared network mode and tried editing host file, entering the IP address of my mac directly, and nothing works. Disabled firewalls entirely on both machines. At this point I'm ready to abandon Parallels for VirtualBox, which works out of the box with the default "NAT" setting. All I have to do is ipconfig, obtain the IP address of the default gateway, and add it to my hosts file - boom - it works perfectly. Parallels however I have spent hours and hours trying to resolve, with no success. I am able to ping my host machine (MacOS sierra at 10.211.55.2) but adding that IP to my hosts with my "local-site.dev " or "localhost" URL, it can't find the site.