Cloud-init service change network configuration in every reboot

Hi All,

I am in a big problem. I am using cloud-init-18.2-1.el7_6.1.x86_64 to create vm from template.
In the time of VM provision all going well but I shutdown and start the vm the network configuration file changed. All configuration vanished and "BOOTPROTO" changed in to "dhcp" mode.
In the time of vm creation bootporto=none, but reboot change bootporto=dhcp.

Please help me.