Revert back to using NFS on Windows, too (encouraging the use of a plugin).

Vagrantfile

@@ -97,15 +97,15 @@ Vagrant.configure("2") do |config|
   # Create a static IP
   config.vm.network :private_network, ip: server_ip
 
-  # We can use NFS if we're not running on Windows
-  share_opts = { :id => "core" }
-  unless Vagrant::Util::Platform.windows?
-    share_opts[:nfs] = true
-    share_opts[:mount_options] = ['nolock,vers=3,udp,noatime,actimeo=1']
-  end
-
-  # Configure the shared folder
-  config.vm.synced_folder ".", "/vagrant", share_opts
+  # A private dhcp network is required for NFS to work (on Windows hosts, at least)
+  # Windows users should use the winnfsd plugin: https://github.com/GM-Alex/vagrant-winnfsd
+  config.vm.network :private_network, type: "dhcp"
+
+  # Use NFS for the shared folder
+  config.vm.synced_folder ".", "/vagrant",
+            id: "core",
+            :nfs => true,
+            :mount_options => ['nolock,vers=3,udp,noatime,actimeo=1']
 
   # If using VirtualBox
   config.vm.provider :virtualbox do |vb|