# IPv6（网际协议版本6）

网际协议第6版（英语：Internet Protocol version 6，缩写：IPv6）是网际协议的最新版本，用作互联网的协议。用它来取代IPv4主要是为了解决IPv4地址枯竭问题，同时它也在其他方面对于IPv4有许多改进。

IPv6的设计目的是取代IPv4，然而长期以来IPv4在互联网流量中仍占据主要地位，IPv6的使用增长缓慢。在2019年12月，通过IPv6使用Google服务的用户百分率首次超过30%。

资料来源：维基百科


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://doc.bitbrowser.cn/fingerprint/2.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.