Linux 设置网络接口指标
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Set Network Interface Metric
提问by Thomas Hunter II
What is the proper way to set network interface metrics these days?
现在设置网络接口指标的正确方法是什么？
I'm looking for command line ways for doing this. I'm currently using Arch Linux, but a distro-agnostic method would be preferred.
我正在寻找执行此操作的命令行方法。我目前正在使用 Arch Linux，但最好使用与发行版无关的方法。
Here is my failed attempt:
这是我失败的尝试：
$ sudo ifconfig wlan0 metric 1
SIOCSIFMETRIC: Operation not supported
回答by AlexT
As stated in man ifconfig, metric is not a supported option for the ifconfigcommand on Linux systems, because when the ifconfigcommand is processed it doesn't create a routing table entry.
正如man ifconfig 中所述，Linux 系统上的ifconfig命令不支持 metric 选项，因为在处理ifconfig命令时，它不会创建路由表条目。
metric N
This parameter sets the interface metric. It is not available under GNU/Linux.
To answer your question, you'd have to use the routecommand, to add the route with the desired metric and delete the old entry. For example:
要回答您的问题，您必须使用route命令，添加具有所需指标的路由并删除旧条目。例如：
sudo route add -net default gw 10.10.0.1 netmask 0.0.0.0 dev wlan0 metric 1
sudo route del -net default gw 10.10.0.1 netmask 0.0.0.0 dev wlan0 metric 0
