PXE自动部署ubuntu16.04之后网络无法配置

Error editing connection: did not find a connection with UUID ‘(null)’

sudo vi /etc/network/interfaces

#interfaces(5) file used by ifup(8) and ifdown(8)
#auto lo
#iface lo inet loopback
#auto ens33
#iface ens33 inet dhcp

用#将文件全部注释
Next, stop and restart the NetworkManager.service with:

sudo systemctl stop NetworkManager.service
sudo systemctl start NetworkManager.service
停止网络服务，然后重启，如果不行就重启系统。

引用自https://askubuntu.com/questions/879508/error-editing-connection-did-not-find-a-connection-with-uuid-null