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每次重启都要使用 dhclient 才能访问互联网

tag-icon • tag-icon ubuntu-10.04 virtualization dhclient
每次重启都要使用 dhclient 才能访问互联网

因此，每次我重新启动 ubuntu 服务器（虚拟 10.04，通过 Xencenter）时，我都必须调用 dhclient 才能访问互联网：

http://img813.imageshack.us/i/dhclient.png/

我需要更改什么才能自动访问互联网？抱歉发布图片，我正在使用 Xencenter，因此无法复制/粘贴控制台输出

编辑：：

daniel@workwork:~$ cat /etc/network/interfaces 
# 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 static
    address 192.168.69.136
    netmask 255.255.255.0
    network 192.168.69.0
    broadcast 192.168.69.255
    gateway 192.168.69.1
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 192.168.69.120
    dns-search workwork.com.au
daniel@workwork:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr ae:11:14:22:0a:03  
          inet6 addr: fe80::ac11:14ff:fe22:a03/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32 errors:0 dropped:0 overruns:0 frame:0
          TX packets:85 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10496 (10.4 KB)  TX bytes:13086 (13.0 KB)
          Interrupt:32 Base address:0x6000 

eth1      Link encap:Ethernet  HWaddr b2:2c:40:f2:a0:fa  
          inet addr:192.168.69.167  Bcast:192.168.69.255  Mask:255.255.255.0
          inet6 addr: fe80::b02c:40ff:fef2:a0fa/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13448 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3100 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:7679428 (7.6 MB)  TX bytes:282286 (282.2 KB)
          Interrupt:36 Base address:0xa100 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:179 errors:0 dropped:0 overruns:0 frame:0
          TX packets:179 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:36905 (36.9 KB)  TX bytes:36905 (36.9 KB)

daniel@workwork:/var/lib/dhcp3$ cat dhclient.leases 
lease {
  interface "eth1";
  fixed-address 192.168.69.167;
  filename "boot\\x86\\wdsnbp.com";
  option subnet-mask 255.255.255.0;
  option routers 192.168.69.1;
  option dhcp-lease-time 28800;
  option dhcp-message-type 5;
  option domain-name-servers 192.168.69.120,192.168.69.121;
  option dhcp-server-identifier 192.168.69.120;
  option dhcp-renewal-time 14400;
  option dhcp-rebinding-time 25200;
  option domain-name "workwork.com.au";
  renew 5 2011/03/18 07:36:53;
  rebind 5 2011/03/18 11:35:39;
  expire 5 2011/03/18 12:35:39;
}
lease {
  interface "eth1";
  fixed-address 192.168.69.167;
  filename "boot\\x86\\wdsnbp.com";
  option subnet-mask 255.255.255.0;
  option routers 192.168.69.1;
  option dhcp-lease-time 28800;
  option dhcp-message-type 5;
  option domain-name-servers 192.168.69.120,192.168.69.121;
  option dhcp-server-identifier 192.168.69.120;
  option dhcp-renewal-time 14400;
  option dhcp-rebinding-time 25200;
  option domain-name "workwork.com.au";
  renew 5 2011/03/18 08:51:58;
  rebind 5 2011/03/18 12:24:16;
  expire 5 2011/03/18 13:24:16;
}
daniel@workwork:/var/lib/dhcp3$ cat dhclient.eth0.leases 
daniel@workwork:/var/lib/dhcp3$

ifconfig eth1之前和之后dhclient http://img692.imageshack.us/i/prepost.png/

答案1

您可能需要查看租约（在我的 Ubuntu 上，它们存储在 中/var/lib/dhcp3；查找*.lease文件）；我猜是您的某个配置设置（可能是 DNS 服务器）有误，并且dhclient正在根据 DHCP 租约进行更正。您可以查看已保存的租约，并/etc/network/interfaces在需要时使用它进行更新。

以下是租赁记录样本dhclient：

lease {
  interface "eth1";
  fixed-address 10.211.55.15;
  option subnet-mask 255.255.255.0;
  option routers 10.211.55.1;
  option dhcp-lease-time 1800;
  option dhcp-message-type 5;
  option domain-name-servers 10.211.55.1;
  option dhcp-server-identifier 10.211.55.1;
  option domain-name "localdomain";
  renew 3 2011/03/16 23:17:44;
  rebind 3 2011/03/16 23:32:10;
  expire 3 2011/03/16 23:35:55;
}

答案2

/etc/network/interfaces你的文件是什么样子的？

对于 DHCP，您的接口应按如下方式配置：

auto eth0
iface eth0 inet dhcp

如果这不起作用，则某些操作可能以错误的顺序开始；您可以通过dhclient向 中添加命令来解决这个问题/etc/rc.local。

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