Question: how to configure isc-dhcp-server in ubuntu?
Answer: 1 Install isc-dhcp-server. Install isc-dhcp-server with apt. $ sudo apt install -y isc-dhcp-server.
2 /etc/default/isc-dhcp-server. Add configuration for DHCPD. ... 
3 /etc/dhcp/dhcpd. conf. ... 
4 Run isc-dhcp-server. Run isc-dhpc-server with systemd. ... 
5 Execution result. Run the following command on client machine.