[Unit]
Description=DHCPv4 Server Daemon
Documentation=man:dhcpd(8) man:dhcpd.conf(5)
After=network.target
After=time-sync.target

[Service]
PIDFile=/var/run/dhcpd.pid
EnvironmentFile=/etc/default/dhcp-server
EnvironmentFile=-/etc/sysconfig/dhcp-server
ExecStartPre=/bin/touch /var/lib/dhcp/dhcpd.leases
ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -pf /var/run/dhcpd.pid $DHCPDARGS -q $INTERFACES

[Install]
WantedBy=multi-user.target