重新设定了手动连接pppoe,还是 上不了内网，ping 192.168.2.9不通 ，
后来用了dhclient,
kaibinlong@kaibinlong-desktop:~$ sudo dhclient
There is already a pid file /var/run/dhclient.pid with pid 19367
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/sw/dhcp/Listening on LPF/eth0/00:15:58:0f:b3:35
Sending on LPF/eth0/00:15:58:0f:b3:35
Sending on Socket/fallback
DHCPREQUEST of 172.24.29.115 on eth0 to 255.255.255.255 port 67
DHCPREQUEST of 172.24.29.115 on eth0 to 255.255.255.255 port 67
DHCPACK of 172.24.29.115 from 172.24.16.1
bound to 172.24.29.115 -- renewal in 269358 seconds.
kaibinlong@kaibinlong-desktop:~$
ping 192.168.2.9 这下通了，能上内网了，不懂...
