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重启后网络停止工作

tag-icon • tag-icon 12.04 networking server
重启后网络停止工作

我关闭了无头、无 GUI 文件服务器来更换卡住的风扇，现在 eth0 接口无法通过 DHCP 获取 IP 地址；在启动期间，它只是坐在那里“等待网络配置”并最终超时。

/etc/网络/接口

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

$grep eth0 /var/log/syslog

Sep  9 18:14:27 server kernel: [    1.921881] e1000 0000:02:00.0: eth0: (PCI:33MHz:32-bit) 00:07:e9:08:02:17
Sep  9 18:14:27 server kernel: [    1.921894] e1000 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
Sep  9 18:14:27 server kernel: [    9.657153] ADDRCONF(NETDEV_UP): eth0: link is not ready
Sep  9 18:14:27 server kernel: [   10.140090] ADDRCONF(NETDEV_UP): eth0: link is not ready
Sep  9 18:14:29 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
Sep  9 18:14:33 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
Sep  9 18:14:44 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Sep  9 18:14:58 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
Sep  9 18:15:06 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
Sep  9 18:15:15 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Sep  9 18:15:27 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
Sep  9 18:15:46 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
Sep  9 18:15:53 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Sep  9 18:16:05 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 16
Sep  9 18:16:21 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20
Sep  9 18:16:41 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
Sep  9 18:16:56 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Sep  9 18:17:10 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
Sep  9 18:17:31 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
Sep  9 18:17:44 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19
Sep  9 18:18:03 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
Sep  9 18:18:10 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
Sep  9 18:18:17 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
Sep  9 18:18:29 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
Sep  9 18:18:43 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20
Sep  9 18:19:03 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
Sep  9 18:19:16 server dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11

DHCP 服务器是我的 ADSL 调制解调器，它正在工作并为其他网络设备分配地址。

有想法吗？

更新 1：使用已知可以正常工作的早期内核启动；仍然无法正常工作。
更新 2：尝试了不同的以太网电缆；仍然无法正常工作。

答案1

找到了解决办法，虽然我不知道为什么它有效。我很想在评论中听听这可能是如何解决问题的。

我在 BIOS 中禁用了板载以太网适配器并启动了服务器（因此没有 eth0，只有环回设备）。我重新启动，在 BIOS 中重新启用了以太网适配器，这次它正常工作了。

答案2

在你的日志中我看到

ADDRCONF(NETDEV_UP): eth0: link is not ready

您能使用相同的 RJ45 电缆与其他设备一起测试您的 ADSL 调制解调器吗？

您能否登录到您的调制解调器并查看您的 MAC 地址（例如00:07:e9:08:02:17）是否未被列入黑名单？

如果调制解调器上有多个端口，您是否更改过端口？

编辑

好吧，既然你已经做完了功课，我能想到的唯一“解决方案”就是 LAN 卡坏了 ;-(

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