config.vm.network :hostonly にすると vagrant up が失敗する

症状

$ vagrant up
/opt/vagrant/embedded/gems/gems/vagrant-1.2.2/plugins/kernel_v2/config/vm.rb:146:in `[]': can't convert Symbol into Integer (TypeError)
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/plugins/kernel_v2/config/vm.rb:146:in `network'
        from /home/test/vagrant_vm/Vagrantfile:24:in `block in <top (required)>'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/v2/loader.rb:37:in `call'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/v2/loader.rb:37:in `load'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/loader.rb:104:in `block (2 levels) in load'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/loader.rb:98:in `each'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/loader.rb:98:in `block in load'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/loader.rb:95:in `each'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/config/loader.rb:95:in `load'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/environment.rb:261:in `config_global'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/environment.rb:502:in `block in action_runner'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/action/runner.rb:28:in `call'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/action/runner.rb:28:in `run'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/environment.rb:274:in `hook'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/lib/vagrant/environment.rb:135:in `initialize'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/bin/vagrant:62:in `new'
        from /opt/vagrant/embedded/gems/gems/vagrant-1.2.2/bin/vagrant:62:in `<top (required)>'
        from /opt/vagrant/bin/../embedded/gems/bin/vagrant:23:in `load'
        from /opt/vagrant/bin/../embedded/gems/bin/vagrant:23:in `<main>'

対処

private_networkを指定する：

config.vm.network :private_network, ip: "192.168.33.10"

参考

vagrant up fails with config.vm.network :hostonly