@fragicide After checking the Chinese support forums.
They adviced to do the following on line 100 onwards
# 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 => ['']
1. Comment config.vm.network
2. empy the array on mount options
Now it's working for me. Not sure for how long. LOL