One might want to use a template for the DHCPd server entry in the dhcpd.conf, so that one does not have to change it for a new computer.

Hints/Ideas for the template:

• MAC address: ('ansible_interfaces' starts with 'enp') ['ansible_enp????']['macaddress'] when ['ansible_enp???']['ipv4']['network'] == '192.168.0.0'
• Hostname: ['ansible_fqdn']
• IP: '192.168.0.1'

# DHCPd host
host {{'ansible_hostname'}} {
  hardware ethernet {{ macaddress }};
  fixed-address {{ ip }};
}