netplan配置网络

Ubuntu 17 开始使用netplan配置网络，因此很多其它系统的教程都不再适用(/etc/network/interfaces 下的配置已经不再起作用)

https://netplan.io/

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 cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
  ethernets:
    enp5s0f0:
      dhcp4: no
      addresses:
        - 192.168.0.4/24
    enp6s0f0:
      dhcp4: yes
      dhcp4-overrides:
          route-metric: 1
    enp6s0f1:
      dhcp4: no
      addresses:
        - 192.168.1.80/24
      gateway4: 192.168.1.254

The top-level node in a netplan configuration file is a network: mapping
that contains version: 2 (the YAML currently being used by curtin, MaaS,
etc. is version 1), and then device definitions grouped by their type, such as
ethernets:, modems:, wifis:, or bridges:. These are the types that our
renderer can understand and are supported by our backends.

Each type block contains device definitions as a map where the keys (called
“configuration IDs”) are defined as below.

老实说，version干嘛的我没看懂，反正都写version: 2就完事了

测试

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sudo netplan try

应用(其实上面那个命令用完之后按Enter也就应用了)

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sudo netplan apply