I've installed isc-dhcp-server just for a one-time task. So basically, after task is completed I dont't need it anymore: should I just uninstall it? Or it possible to disable it completely?
sudo service isc-dhcp-server stop seems don't prevent restarting isc-dhcp service in background, after PC rebooted.
Also, there was a lot of modifications in dhcpd.conf, also was assigned static IP to /etc/network/interfaces config: should edit changes back in interfaces config, as don't need it anymore, or this changes are not persistent? Also, I forgot to backup the dhcpd.conf: how to get unchanged one?