Vagrant.configure("2") do |config| config.vm.box = "ubuntu/xenial64" config.vm.network "private_network", ip: "192.168.50.11" config.vm.provider "virtualbox" do |v| v.memory = 1024 # Only allow drift of 1 sec, instead of 20 min default v.customize [ "guestproperty", "set", :id, "/VirtualBox/GuestAdd/VBoxService/--timesync-set-threshold", 1000 ] end end