回复：见内

for step 3:
dhclient eth1
Command not found.

So I try:
dhcpd eth1
Internet Systems Consortium DHCP Server v3.0.3
Copyright blah blah..
and then
/etc/dhcpd.conf line 3: expecting numeric value.
subnet netmask
/etc/dhcpd.conf line 7: expecting numeric value.
subnet netmask
/etc/dhcpd.conf line 11: expecting numeric value.
subnet netmask

Configureation file errors encountered -- exiting

If you did not gt this sofewarefrom ftp.isc.org, please
blah blah..

If youdid get this software blah blah..

exiting.