Centos7 dhcpd.conf 설정후 systemctl start error

ddns-update-style interlim;

ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {

option routers 192.168.0.1;

option subnet-mask 255.255.255.0;

option nis-domain "domain.org";

option domain-name "domain.org";

option domain-name-servers 192.168.1.1;

option time-offset -18000;

range dynamic-bootp 192.168.0.128 192.168.0.254;

default-lease-time 21600;

max-lease-time 43200;

host ns {

next-server sulinux.sulinux.net;

hardware ethernet 12:34:56:78:AB:CD;

fixed-address 207.175.42.254;

}

}

위 내용 그대로 책에 나와 있는 그대로 적고 systemctl enable dhcpd 후에

systemctl start dhcpd 를 했는데 ..

job for dhcpd.service failed because the control process exited with error code. See "systemctl status dhcpd.service" and "journalctl -xe" for details.

이렇게 나오네요 ...;    왜 이러는 건가요..?ㅠ