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How To Force APT Package Manager To Use IPv4 In Ubuntu 16.04
======
![](https://www.ostechnix.com/wp-content/uploads/2018/09/ipv4-720x340.png)
**APT** , short or **A** dvanced **P** ackage **T** ool, is the default package manager for Debian-based systems. Using APT, we can install, update, upgrade and remove applications from the system. Lately, I have been facing a strange error. Whenever I try update my Ubuntu 16.04 box, I get this error – **“0% [Connecting to in.archive.ubuntu.com (2001:67c:1560:8001::14)]”** and the update process gets stuck for a long time. My Internet connection is working well and I can able to ping all websites including Ubuntu official site. After a couple Google searches, I realized that sometimes the Ubuntu mirrors are not reachable over IPv6. This problem is solved after I force APT package manager to use IPv4 in place of IPv6 to access Ubuntu mirrors while updating the system. If you ever encountered with this error, you can solve it as described below.
### Force APT Package Manager To Use IPv4 In Ubuntu 16.04
To force APT to use IPv4 in place of IPv6 while updating and upgrading your Ubuntu 16.04 LTS systems, simply use the following commands:
```
$ sudo apt-get -o Acquire::ForceIPv4=true update
$ sudo apt-get -o Acquire::ForceIPv4=true upgrade
```
Voila! This time update process run and completed quickly.
You can also make this persistent for all **apt-get** transactions in the future by adding the following line in **/etc/apt/apt.conf.d/99force-ipv4** file using command:
```
$ echo 'Acquire::ForceIPv4 "true";' | sudo tee /etc/apt/apt.conf.d/99force-ipv4
```
**Disclaimer:**
I don’t know if anyone is having this issue lately, but I kept getting this error today at least four to five times in my Ubuntu 16.04 LTS virtual machine and I solved it as described above. I am not sure that it is the recommended solution. Go through Ubuntu forums and make sure this method is legitimate. Since mine is just a VM which I use it only for testing and learning purposes, I don’t mind about the authenticity of this method. Use it on your own risk.
Hope this helps. More good stuffs to come. Stay tuned!
Cheers!
--------------------------------------------------------------------------------
via: https://www.ostechnix.com/how-to-force-apt-package-manager-to-use-ipv4-in-ubuntu-16-04/
作者：[SK][a]
选题：[lujun9972](https://github.com/lujun9972)
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]: https://www.ostechnix.com/author/sk/

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如何在 Ubuntu 16.04 强制 APT 包管理器使用 IPv4
======
![](https://www.ostechnix.com/wp-content/uploads/2018/09/ipv4-720x340.png)
**APT**, 是 **A** dvanced **P** ackage **T** ool 的缩写，是基于 Debian 的系统的默认包管理器。我们可以使用 APT 安装、更新、升级和删除应用程序。最近，我一直遇到一个奇怪的错误。每当我尝试更新我的 Ubuntu 16.04 时，我都会收到此错误 - **“0% [Connecting to in.archive.ubuntu.com (2001:67c:1560:8001::14)]”** ，同时更新流程会卡住很长时间。我的网络连接没问题，我可以 ping 通所有网站，包括 Ubuntu 官方网站。在搜索了一番谷歌后，我意识到 Ubuntu 镜像有时无法通过 IPv6 访问。在我强制将 APT 包管理器在更新系统时使用 IPv4 代替 IPv6 访问 Ubuntu 镜像后，此问题得以解决。如果你遇到过此错误，可以按照以下说明解决。
### 强制 APT 包管理器在 Ubuntu 16.04 中使用 IPv4
要在更新和升级 Ubuntu 16.04 LTS 系统时强制 APT 使用 IPv4 代替 IPv6，只需使用以下命令：
```
$ sudo apt-get -o Acquire::ForceIPv4=true update
$ sudo apt-get -o Acquire::ForceIPv4=true upgrade
```
瞧！这次更新很快就完成了。
你还可以使用以下命令在 **/etc/apt/apt.conf.d/99force-ipv4** 中添加以下行，以便将来对所有 **apt-get** 事务保持持久性：
```
$ echo 'Acquire::ForceIPv4 "true";' | sudo tee /etc/apt/apt.conf.d/99force-ipv4
```
**免责声明：**
我不知道最近是否有人遇到这个问题，但我今天在我的 Ubuntu 16.04 LTS 虚拟机中遇到了至少四五次这样的错误，我按照上面的说法解决了这个问题。我不确定这是推荐的解决方案。请浏览 Ubuntu 论坛来确保此方法合法。由于我只是一个 VM，我只将它用于测试和学习目的，我不介意这种方法的真实性。请自行承担使用风险。
希望这有帮助。还有更多的好东西。敬请关注！
干杯!
--------------------------------------------------------------------------------
via: https://www.ostechnix.com/how-to-force-apt-package-manager-to-use-ipv4-in-ubuntu-16-04/
作者：[SK][a]
选题：[lujun9972](https://github.com/lujun9972)
译者：[geekpi](https://github.com/geekpi)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]: https://www.ostechnix.com/author/sk/