Can't bind to dhcp address: Permission denied??

[tech at microembed.cn]

I can't start the dhcpd after i have configured it. the dhcpd.conf is OK.the
message in /vat/log/message says:
Feb 20 22:45:17 rf001 dhcpd: Wrote 0 leases to leases file.
Feb 20 22:45:17 rf001 dhcpd: Listening on
LPF/eth0/00:00:e8:14:f4:a6/192.168.1/24
Feb 20 22:45:17 rf001 dhcpd: Sending on
LPF/eth0/00:00:e8:14:f4:a6/192.168.1/24
Feb 20 22:45:17 rf001 dhcpd: Can't bind to dhcp address: Permission denied
Feb 20 22:45:17 rf001 dhcpd: Please make sure there is no other dhcp server
Feb 20 22:45:17 rf001 dhcpd: running and that there's no entry for dhcp or
Feb 20 22:45:17 rf001 dhcpd: bootp in /etc/inetd.conf.   Also make sure you
Feb 20 22:45:17 rf001 dhcpd: are not running HP JetAdmin software, which
Feb 20 22:45:17 rf001 dhcpd: includes a bootp server. 

why does this happen?