CentOS 6.2 DHCP 설치시.실패

계속 실패가 뜹니다...엉엉

#vi /etc/dhcpd.conf

ddns-update-style interim;
ignore client-updates;
subnet 172.16.1.0 netmask 255.255.255.0 {
option routers 172.16.1.254;
option subnet-mask 255.255.255.0;
option domain-name "aaa.kr";
option domain-name-servers 14.43.86.12;

option time-offset -18000;
range dynamic-bootp 172.16.1.2 172.16.1.254;
default-lease-time 86400;
max-lease-time 86400;
}
subnet 172.16.2.0 netmask 255.255.255.0 {
option routers 172.16.2.254;
option subnet-mask 255.255.255.0;
option domain-name "bbb.kr";
option domain-name-servers 14.43.86.112;

option time-offset -18000;
range dynamic-bootp 172.16.2.247 172.16.2.254;
}
[root@localhost 바탕화면]# service dhcpd start
dhcpd (을)를 시작 중: [실패]

vi /etc/sysconfig/dhcpd

# Command line options here
DHCPDARGS=