Leap15 box was (allegedly temporarily) removed from vagrantcloud.
This is official upstream box generated by openSUSE that should be the
same as the one that used to be available on vagrantcloud.
Vagrant.configure(2) do |config|
- config.vm.box = "opensuse/openSUSE-15.0-x86_64"
+ config.vm.box = "openSUSE-Leap-15.1-Vagrant.x86_64"
+ config.vm.box_url = "https://download.opensuse.org/repositories/Virtualization:/Appliances:/Images:/openSUSE-Leap-15.1/images/boxes/openSUSE-Leap-15.1-Vagrant.x86_64.json"
+
config.vm.synced_folder ".", "/vagrant", disabled: true
config.vm.define "leap15_knot-resolver" do |machine|