Ubuntu を Vagrant の :public_network で試す時に default route を public_network 側などに設定する chef のコード（やっつけ

route.erb

#!/bin/sh

route del default
route add default gw <%= @gateway %>

route.rb

if node['route']['gateway']
  execute "networking-restart" do
    command "service networking restart"
    action :nothing
  end

  template "/etc/network/if-up.d/route" do
    source "route.erb"
    mode 0755
    owner "root"
    group "root"
    variables({ gateway: node['route']['gateway'] })
    notifies :run, "execute[networking-restart]"
  end
end

Vagrantfile

agrant.configure("2") do |config|

  # ... 省略されています

  config.vm.network :public_network, ip: "192.168.1.10", bridge: "en0: Ethernet"
  
  config.vm.provision :chef_solo do |chef|
    chef.json = {
      :route => {
        :gateway => '192.168.1.1'
      }
    }
  }

  # ... 省略されています
  
end