ubuntu相关

1网卡地址
/etc/netplan

network:
  ethernets:
    ens33:
      dhcp4: no
      addresses: [192.168.21.204/24]
      optional: true
      routes:
          - to: default
            via: 192.168.21.2
      nameservers:
           addresses: [192.168.21.2,8.8.8.8]
  version: 2