vagrant/plugins/guests/arch/cap/configure_networks.rb

# -*- coding: utf-8 -*-
require "tempfile"

require "vagrant/util/template_renderer"

module VagrantPlugins
  module GuestArch
    module Cap
      class ConfigureNetworks
        include Vagrant::Util

        def self.configure_networks(machine, networks)
          interfaces = Array.new
          machine.communicate.sudo("ip -o -0 addr | grep -v LOOPBACK | awk
                                   '{print $2}' | sed 's/://'") do |_, result|
            interfaces = result.split("\n")
          end

          networks.each do |network|
            # We use :device in the template instead of
            # eth#{network[:interface]} in order to support Predictable
            # Network Interfaces
            network[:device] = interfaces[network[:interface]]

            entry =
                TemplateRenderer.render("guests/arch/network_#{network[:type]}",
                                            options: network)

            temp = Tempfile.new("vagrant")
            temp.binmode
            temp.write(entry)
            temp.close

            machine.communicate.upload(temp.path, "/tmp/vagrant_network")
            machine.communicate.sudo("mv /tmp/vagrant_network
                                     /etc/netctl/#{network[:device]}")
            machine.communicate.sudo("ip link set #{network[:device]} down &&
                                     netctl start #{network[:device]}")
          end
        end
      end
    end
  end
end