As a part of the installation of [SlapOS node](https://deploy.erp5.net/slapos), the Ansible playbook is written in `yml` file. Since it is the first time I worked with ansible playbook, I surely don't much about it while I do try to realise a function: conditionallise the prompt for variables.
This document will present and explain the improvements of an existing software release available on SlapOS: HTML5 Application Server(html5as). Readers can therefore have an understanding of how Buildout works on SlapOS and [Webrunner](https://webrunner.nexedi.com/). To follow the steps in this document, you are supposed to know the architecture of SlapOS and be familiar with [Buildout](http://www.buildout.org/en/latest/). There is also a tutorial to [Extend Software Release: helloworld](https://slapos.nexedi.com/slapos-Tutorial.Extend.Software.Release) can be referred to.
Rapid.Space provides IPv6 connection on all servers, however, most ISP (Internet Service Provider) in China only provide IPv4 network. In order to help Rapid.Space users in China to adopt IPv6, without using proxy to access Rapid.Space service, we are going to introduce a simple way to install IPv6 in your particular machine(Linux, Windows or Mac), so your machine can use IPv6.