我上网是在大学宿舍里面，通过路由器7个人共享上网的，之前网络正常，一插上网线就可以连上了，IP地址是192.168.1.103之类的。今天网上，我上着上着网，突然一下子就断线了，再手动连接连不上了。其他人的网络正常。于是我就重启，但是重启后仍然连接不上。在断线的当时，我是开了浏览器，开了pps在看电影，同时开了wget在下载东西，另外我在终端里用"sudo nmap -O"命令想试试百度谷歌他们用什么操作系统，百度的试了，刚把谷歌的敲进去执行网络就断了，就再也连接不上了。不知道跟这个有没有关系。
重启后还连接不上，这是syslog里的相关日志：
代码： 全选
Dec 1 18:25:34 localhost kernel: [ 45.922043] Skipping EDID probe due to cached edid
Dec 1 18:25:34 localhost kernel: [ 45.959559] Skipping EDID probe due to cached edid
Dec 1 18:25:34 localhost kernel: [ 46.024750] Skipping EDID probe due to cached edid
Dec 1 18:25:38 localhost kernel: [ 49.914080] Skipping EDID probe due to cached edid
Dec 1 18:25:39 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
Dec 1 18:25:44 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
Dec 1 18:25:50 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Dec 1 18:26:02 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
Dec 1 18:26:04 localhost NetworkManager: <info> (eth0): DHCP transaction took too long, stopping it.
Dec 1 18:26:04 localhost NetworkManager: <info> (eth0): canceled DHCP transaction, dhcp client pid 841
Dec 1 18:26:04 localhost NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) scheduled...
Dec 1 18:26:04 localhost NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) started...
Dec 1 18:26:04 localhost NetworkManager: <info> (eth0): device state change: 7 -> 9 (reason 5)
Dec 1 18:26:04 localhost NetworkManager: <info> Marking connection 'Auto eth0' invalid.
Dec 1 18:26:04 localhost NetworkManager: <info> Activation (eth0) failed.
Dec 1 18:26:04 localhost NetworkManager: <info> Activation (eth0) Stage 4 of 5 (IP4 Configure Timeout) complete.
Dec 1 18:26:04 localhost NetworkManager: <info> (eth0): device state change: 9 -> 3 (reason 0)
Dec 1 18:26:04 localhost NetworkManager: <info> (eth0): deactivating device (reason: 0).
代码： 全选
地址类型： 通过DHCP指派
IP地址： 192.168.1.107
子网掩码： 255.255.255.0
默认网关： 192.168.1.1
代码： 全选
实际地址: 08-00-27-BF-5A-A2
IP 地址: 192.168.1.107
子网掩码: 255.255.255.0
默认网关: 192.168.1.1
DHCP 服务器: 192.168.1.1
获得了租约: 2010-12-1 19:32:38
租约过期: 2010-12-1 21:32:38
DNS 服务器: 211.162.223.4, 222.172.200.68
WINS 服务器:
代码： 全选
zym@zym-freedom:~$ ifconfig
eth0 Link encap:以太网 硬件地址 00:22:15:75:c3:dd
inet6 地址: fe80::222:15ff:fe75:c3dd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1
接收数据包:222653 错误:0 丢弃:0 过载:0 帧数:0
发送数据包:153753 错误:0 丢弃:0 过载:0 载波:2
碰撞:0 发送队列长度:1000
接收字节:311062093 (311.0 MB) 发送字节:11248441 (11.2 MB)
中断:41
eth0:avahi Link encap:以太网 硬件地址 00:22:15:75:c3:dd
inet 地址:169.254.10.9 广播:169.254.255.255 掩码:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1
中断:41
lo Link encap:本地环回
inet 地址:127.0.0.1 掩码:255.0.0.0
inet6 地址: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 跃点数:1
接收数据包:183934 错误:0 丢弃:0 过载:0 帧数:0
发送数据包:183934 错误:0 丢弃:0 过载:0 载波:0
碰撞:0 发送队列长度:0
接收字节:14162136 (14.1 MB) 发送字节:14162136 (14.1 MB)
代码： 全选
auto lo
iface lo inet loopback
代码： 全选
auto lo
auto eth0
iface lo inet loopback
iface eth0 inet dhcp
netmask 255.255.255.0
gateway 192.168.1.1
代码： 全选
zym@zym-freedom:~$ sudo /etc/init.d/networking restart
* Reconfiguring network interfaces... * Stopping the Firestarter firewall...
...done.
* Starting the Firestarter firewall...
...fail!
run-parts: /etc/network/if-down.d/50firestarter exited with return code 2
RTNETLINK answers: No such process
There is already a pid file /var/run/dhclient.eth0.pid with pid 11720
killed old client process, removed PID file
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/eth0/00:22:15:75:c3:dd
Sending on LPF/eth0/00:22:15:75:c3:dd
Sending on Socket/fallback
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/eth0/00:22:15:75:c3:dd
Sending on LPF/eth0/00:22:15:75:c3:dd
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 16
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
* Stopping the Firestarter firewall...
...done.
* Starting the Firestarter firewall...
...fail!
run-parts: /etc/network/if-up.d/50firestarter exited with return code 2
[ OK ]
我没辙了，特来请教，还要设置哪里啊？谢谢了！