DHCP居然会出现如下怪事?请教高手!!急!

Question

请教高手,我在linuxRedHat AS4.0中配置DHCP服务器时居然会出现如下问题,我是在虚拟机下做的,所有文件均存在,
/etc/dhcpd.conf,/var/state/dhcp/dhcpd.leaeses
/etc/sysconfig/dhcp中也指定DHCPDARGS=eth0,
当运行时出现如下:

[root@localhost ~]# /usr/sbin/dhcpd
Internet Systems Consortium DHCP Server V3.0.2rc2
Copyright 2004 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Lease with bogus binding state: 257
Wrote 0 leases to leases file.
Listening on LPF/eth0/00:0c:29:3b:64:16/192.168.2.0/24
Sending on   LPF/eth0/00:0c:29:3b:64:16/192.168.2.0/24
Sending on   Socket/fallback/fallback-net
以下是/etc/dhcpd.conf的配置文件:权限也是755
[root@localhost ~]# cat /etc/dhcpd.conf
ddns-update-style  none;
ignore  client-updates;
default-lease-time   36400;
max-lease-time   36400;
option routers 192.168.2.1;
option domain-name "www.dong.com";
option domain-name-servers  192.168.2.1;
subnet  192.168.2.0  netmask  255.255.255.0 {
range  192.168.2.2  192.168.2.20;
}
我用win2000得不到地址,
tcpdump -i eth0也用了,但只能侦听到win2000机器发送discover请求,
在linux里运行dhclient此命令时只有dhcpdiscover,没有dhcpoffer和ack返回,
不知是到底是怎么回事.

这些东东以前做了N次都没有发生问题,文件在其他版本里用全是运行/usr/sbin/dhcpd命令就有
Listening on LPF/eth0/00:0c:29:3b:64:16/192.168.2.0/24
Sending on   LPF/eth0/00:0c:29:3b:64:16/192.168.2.0/24
Sending on   Socket/fallback/fallback-net
这些,但这次出现
Lease with bogus binding state: 257
这一行,是什么原因呢?

请教各位高手!!!!