1. 定位配置文件

ls /etc/netplan/*.yaml  # 通常为 00-installer-config.yaml

2.编辑配置文件，注意空格

# This is the network config written by 'subiquity'
network:ethernets:ens5f0:dhcp4: falseaddresses: [ 192.168.0.251/24 ]gateway4: 192.168.0.1nameservers:addresses:- 223.5.5.5- 8.8.8.8ens5f1:dhcp4: trueens5f2:dhcp4: trueens5f3:dhcp4: trueversion: 2

dhcp4: false #禁用动态IP

3.应用Netplan配置：

sudo netplan apply

4.重启网络服务（可选）：

sudo systemctl restart systemd-networkd

5.验证配置：

ip addr