所以每次我重新启动我的Ubuntu服务器（虚拟10.04，通过Xencenter），我必须先拨打dhclient才能访问互联网：
http://img813.imageshack.us/i/dhclient.png/
我需要改变什么来自动获取互联网？ 道歉张贴图像，我使用Xencenter，所以我不能复制/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 dhclient之前和之后http://img692.imageshack.us/i/prepost.png/
你可能想看看租约（在我的Ubuntu上，它们存储在/var/lib/dhcp3 ;寻找*.lease文件）。 我的猜测是你的一个configuration设置（可能是DNS服务器）是错误的， dhclient正在从DHCP租约中纠正它。 您可以查看保存的租约，并根据需要使用它来更新/etc/network/interfaces 。
以下是一个dhclient租赁logging示例：
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; }
你的/etc/network/interfaces文件是什么样的？
对于DHCP，你的界面应该像这样configuration：
auto eth0 iface eth0 inet dhcp
如果这不起作用，可能是从错误的顺序开始的。 您可以通过向/etc/rc.local添加dhclient命令来解决此问题。