实验了一下ifdown和ifup得到下面的结果,请高手帮忙分析一下
cityrhythm@cityrhythm-desktop:~$ sudo ifdown eth0
ifdown: interface eth0 not configured
cityrhythm@cityrhythm-desktop:~$ sudo ifup eth0
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/products/DHCP
Listening on LPF/eth0/00:13:8f:48:76:2b
Sending on LPF/eth0/00:13:8f:48:76:2b
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
cityrhythm@cityrhythm-desktop:~$