centos6.0 中的dhcp服务无法开启

[root@localhost ~]# service dhcpd start Starting dhcpd: [FAILED] [root@localhost ~]# tail -f /var/log/messages Apr 19 06:52:23 localhost dhcpd: Apr 19 06:52:23 localhost dhcpd: This version of ISC DHCP is based on the release available Apr 19 06:52:23 localhost dhcpd: on ftp.isc.org. Features have been added and other changes Apr 19 06:52:23 localhost dhcpd: have been made to the base software release in order to make Apr 19 06:52:23 localhost dhcpd: it work better with this distribution. Apr 19 06:52:23 localhost dhcpd: Apr 19 06:52:23 localhost dhcpd: Please report for this software via the CentOS Bugs Database: Apr 19 06:52:23 localhost dhcpd: http://bugs.centos.org/ Apr 19 06:52:23 localhost dhcpd: Apr 19 06:52:23 localhost dhcpd: exiting.

/etc/dhcpd.conf的具体配置如下

ddns-update-style none; subnet 192.168.137.0 netmask 255.255.255.0{ option routers 192.168.137.4; option subnet-mask 255.255.255.0; option domain-name mycentos; option domain-name-servers 200.3.4.10, 200.3.4.20;

range 192.168.137.81 192.168.137.200; default-lease-time 86400; max-lease-time 172000; } 望高手解答，小弟在此谢过