Ubuntu中文论坛

我用的是ubuntu 7.10

我用静态IP可以上网，可当我设为DHCP或者是“漫游模式”的时候，就无法上网。
Ping的时候提示 connect: Network is unreachable

重启网卡时提示如下：

root@Jack:~# /etc/init.d/networking restart
* Reconfiguring network interfaces... RTNETLINK answers: No such process
There is already a pid file /var/run/dhclient.eth0.pid with pid 134519120
Internet Systems Consortium DHCP Client V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:01:6c:02:fb:a2
Sending on LPF/eth0/00:01:6c:02:fb:a2
Sending on Socket/fallback
DHCPRELEASE on eth0 to 192.168.1.1 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
There is already a pid file /var/run/dhclient.eth0.pid with pid 134519120
Internet Systems Consortium DHCP Client V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
Listening on LPF/eth0/00:01:6c:02:fb:a2
Sending on LPF/eth0/00:01:6c:02:fb:a2
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPOFFER from 192.168.1.254
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 192.168.1.254
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFNETMASK: Permission denied
SIOCSIFBRDADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCADDRT: Operation not permitted


请高手帮帮忙！！！这个问题困惑了我好久了！！！！