使用 NetworkManager 创建网桥
安装 NetworkManager
sudo apt install -y NetworkManager
创建网桥，并启用 DHCP
sudo nmcli connection add type bridge con-name br0 ifname br0
sudo nmcli connection modify br0 ipv4.method auto # 启用 DHCP
sudo nmcli connection modify br0 ipv6.method auto # 启用 DHCPv6
添加网桥接口
sudo nmcli connection add type ethernet con-name eth0 ifname eth0 master br0
sudo nmcli connection add type ethernet con-name eth1 ifname eth1 master br0
启动网桥
sudo nmcli connection up br0
设置 网桥的 dns
sudo nmcli connection modify br0 ipv4.dns "223.5.5.5"
重启 NetworkManager
sudo systemctl restart NetworkManager
增加的配置在 /etc/NetworkManager/system-connections/br0.nmconnection 文件中