pppoeconf经常出这样的问题

[罗非鱼]

我发现经常出现这样的故障，某天用ubuntu上网，不能上了，用xp好好的可以上，于是就重装pppoeconf，重装后又可以上网了，请问，各位是否碰到这种情况？我出现两次了（两个月）。
这是什么原因呢？

[速腾1994]

用奶妈

[罗非鱼]

今天这个问题又出现了，
这个是日志/var/log/syslog
May 10 11:50:18 debian gdm-simple-greeter[1802]: Gtk-WARNING: /build/buildd-gtk+2.0_2.20.1-2-i386-TNeM25/gtk+2.0-2.20.1/gtk/gtkwidget.c:5628: widget not within a GtkWindow
May 10 11:50:20 debian kernel: [ 30.816102] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:32 debian kernel: [ 42.816053] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:40 debian pppd[974]: Timeout waiting for PADO packets
May 10 11:50:40 debian pppd[974]: Unable to complete PPPoE Discovery
May 10 11:50:44 debian kernel: [ 54.816078] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:56 debian kernel: [ 66.816043] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:05 debian kernel: [ 75.462335] NET: Registered protocol family 24
May 10 11:51:08 debian kernel: [ 78.816085] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:20 debian kernel: [ 90.816088] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:21 debian kernel: [ 91.976052] iwl3945 0000:04:00.0: firmware: requesting iwlwifi-3945-2.ucode
May 10 11:51:21 debian kernel: [ 92.059164] iwl3945 0000:04:00.0: loaded firmware version 15.32.2.9
May 10 11:51:21 debian kernel: [ 92.127057] Registered led device: iwl-phy0::radio
May 10 11:51:21 debian kernel: [ 92.127321] Registered led device: iwl-phy0::assoc
May 10 11:51:21 debian kernel: [ 92.127574] Registered led device: iwl-phy0::RX
May 10 11:51:21 debian kernel: [ 92.127833] Registered led device: iwl-phy0::TX
May 10 11:51:21 debian kernel: [ 92.132833] ADDRCONF(NETDEV_UP): wlan0: link is not ready
May 10 11:51:32 debian kernel: [ 102.816089] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:45 debian pppd[974]: Timeout waiting for PADO packets
May 10 11:51:45 debian pppd[974]: Unable to complete PPPoE Discovery
May 10 11:51:56 debian kernel: [ 126.816086] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:52:17 debian shutdown[2245]: shutting down for system reboot
May 10 11:52:17 debian init: Switching to runlevel: 6
May 10 11:52:17 debian acpid: client 1304[0:0] has disconnected
May 10 11:52:17 debian acpid: client connected from 2258[0:0]
May 10 11:52:17 debian acpid: 1 client rule loaded
May 10 11:52:17 debian gnome-session[2282]: WARNING: Could not launch application 'at-spi-registryd-wrapper.desktop': Unable to start application: Failed to execute child process "/usr/lib/at-spi/at-spi-registryd" (No such file or directory)
May 10 11:52:18 debian avahi-daemon[1302]: Got SIGTERM, quitting.
May 10 11:52:18 debian avahi-daemon[1302]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::21f:c6ff:fe40:5ddc.
May 10 11:52:18 debian avahi-daemon[1302]: avahi-daemon 0.6.27 exiting.
May 10 11:52:19 debian kernel: [ 149.560091] fuse exit
May 10 11:52:23 debian acpid: exiting
May 10 11:52:23 debian gdm-simple-slave[2257]: WARNING: Unable to close session: Connection was disconnected before a reply was received#012
May 10 11:52:23 debian rpc.statd[1055]: Caught signal 15, un-registering and exiting
May 10 11:52:23 debian gdm-simple-greeter[2328]: WARNING: GetDisplayId org.freedesktop.DBus.Error.NoReply raised: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.#012
May 10 11:52:32 debian kernel: [ 162.816083] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:52:33 debian kernel: Kernel logging (proc) stopped.
May 10 11:52:33 debian rsyslogd: [origin software="rsyslogd" swVersion="4.6.4" x-pid="1229" x-info="http://www.rsyslog.com"] exiting on signal 15.


这个也是日志 /var/log/messages

May 10 11:50:17 debian kernel: [ 27.816213] ---[ end trace 300bf5280fba573b ]---
May 10 11:50:20 debian kernel: [ 30.816102] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:32 debian kernel: [ 42.816053] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:40 debian pppd[974]: Timeout waiting for PADO packets
May 10 11:50:44 debian kernel: [ 54.816078] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:50:56 debian kernel: [ 66.816043] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:05 debian kernel: [ 75.462335] NET: Registered protocol family 24
May 10 11:51:08 debian kernel: [ 78.816085] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:20 debian kernel: [ 90.816088] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:21 debian kernel: [ 91.976052] iwl3945 0000:04:00.0: firmware: requesting iwlwifi-3945-2.ucode
May 10 11:51:21 debian kernel: [ 92.059164] iwl3945 0000:04:00.0: loaded firmware version 15.32.2.9
May 10 11:51:21 debian kernel: [ 92.127057] Registered led device: iwl-phy0::radio
May 10 11:51:21 debian kernel: [ 92.127321] Registered led device: iwl-phy0::assoc
May 10 11:51:21 debian kernel: [ 92.127574] Registered led device: iwl-phy0::RX
May 10 11:51:21 debian kernel: [ 92.127833] Registered led device: iwl-phy0::TX
May 10 11:51:21 debian kernel: [ 92.132833] ADDRCONF(NETDEV_UP): wlan0: link is not ready
May 10 11:51:32 debian kernel: [ 102.816089] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:51:45 debian pppd[974]: Timeout waiting for PADO packets
May 10 11:51:56 debian kernel: [ 126.816086] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:52:17 debian shutdown[2245]: shutting down for system reboot
May 10 11:52:32 debian kernel: [ 162.816083] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May 10 11:52:33 debian kernel: Kernel logging (proc) stopped.
May 10 11:52:33 debian rsyslogd: [origin software="rsyslogd" swVersion="4.6.4" x-pid="1229" x-info="http://www.rsyslog.com"] exiting on signal 15.
请问，问题出在哪里？

[qy117121]

用奶妈