后来折腾了半天,把networkmanager编辑的链接全删掉了,然后不知道还做了啥操作,sudo dhclient有结果了,然后可以上网了。重启之后不能上网,编辑/etc/network/interfaces,内容为:No DHCPOFFERS received.
No working leases in persistent database - sleeping.
重启也可以上网了。(dhclient是动态分配吧,interfaces里是静态分配吧?到底是哪个起作用啊?auto eth0
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1

同寝室另一台10.10,基本同样步骤折腾了半天还是不能上网,我也想不起自己到底在现在能上网的那台电脑做了啥管用的操作了。。。
他ifconfig的结果是eth3不是eth0,这个没关系吧?
他sudo dhclient的结果:
请问到底应该如何配置路由啊?jiaolb@jiaolb-EN987AA-AB2-W5367CL:~$ sudo dhclient
Internet Systems Consortium DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Listening on LPF/eth3/00:14:2a:a7:c0:1a
Sending on LPF/eth3/00:14:2a:a7:c0:1a
Sending on Socket/fallback
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 19
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 9
No DHCPOFFERS received.
No working leases in persistent database - sleeping.