校园网不停地断开是怎么回事

今天网上上校园网时,总是不停地断开,我不断地链接又不断地断开,郁闷死我了.以前从来没有出现过这种情况.哪位大侠救俺则个.

下面还出现这种信息.我想是不是由于没有象WINDOWS下设置自动链接的缘故.

欢迎进入武汉大学校园网！
认证成功!!!!!!!
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/eth0/00:0b:2f:13:9b:1e
Sending on LPF/eth0/00:0b:2f:13:9b:1e
Sending on Socket/fallback
DHCPRELEASE on eth0 to 10.30.0.1 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
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/eth0/00:0b:2f:13:9b:1e
Sending on LPF/eth0/00:0b:2f:13:9b:1e
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13