我试图覆盖 netplan yaml 配置中的名称服务器设置，但它似乎不起作用。这是 /etc/netplan/01-netcfg.yaml 文件：
network:
version: 2
renderer: networkd
ethernets:
eth0:
dhcp4: yes
dhcp4-overrides:
use-dns: no
nameservers:
addresses: [192.168.1.7]
我正在运行Ubuntu 18.04.3 LTS（我更改了名称服务器 IP 地址，但其他一切都相同）。另外，当我运行时netplan --debug generate，它会产生以下结果：
** (generate:1951): DEBUG: 20:05:57.212: Processing input file /etc/netplan/01-netcfg.yaml..
** (generate:1951): DEBUG: 20:05:57.212: starting new processing pass
** (generate:1951): DEBUG: 20:05:57.212: eth0: setting default backend to 1
** (generate:1951): DEBUG: 20:05:57.212: Configuration is valid
** (generate:1951): DEBUG: 20:05:57.212: Generating output files..
** (generate:1951): DEBUG: 20:05:57.212: NetworkManager: definition eth0 is …