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what does your /etc/network/interfaces have?
Instead of running dhclient manually on your interface, you should be
able to do "ifup eth0: which will happen on boot as long as this file
has an entry like this:
# This is a list of hotpluggable network interfaces.
# They will be activated automatically by the hotplug subsystem.
mapping hotplug
script grep
map eth1
# The primary network interface
iface eth1 inet dhcp
If it says the interface is already configured, do "ifdown eth0"
You could also do something like the following if hotplug is broken:
auto eth1
iface eth1 inet dhcp
If during the course of using your workstation you lose the loopback,
"ifup lo" should bring it back up.
On my current workstation eth1 is the main NIC as eth0 does not work
properly under linux (built in intel 1000, some weird revision, knoppix
does not work either, but a $15 Netgear GigE NIC works perfectly).
Roy Souther wrote:
> I went through the steps of what happens. When Ubuntu boots it has a lo
> but does not have any IP address on eth0 so I run dhclient on the
> command line. When dhclient is done I have a IP on eth0 but lo is dead.
> Here is the output.
>
> [EMAIL PROTECTED]:/home/user# cat /etc/issue
> Ubuntu 5.10 "Breezy Badger" \n \l
>
> [EMAIL PROTECTED]:/home/user# ifconfig
> 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:5872 errors:0 dropped:0 overruns:0 frame:0
> TX packets:5872 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:297689 (290.7 KiB) TX bytes:297689 (290.7 KiB)
>
> [EMAIL PROTECTED]:/home/user# ping -w4 -i4 127.0.0.1
> PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
> Warning: time of day goes back (-104us), taking countermeasures.
> 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.020 ms
> Warning: time of day goes back (-477us), taking countermeasures.
> 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.000 ms
>
> --- 127.0.0.1 ping statistics ---
> 2 packets transmitted, 2 received, 0% packet loss, time 4000ms
> rtt min/avg/max/mdev = 0.000/0.010/0.020/0.010 ms
> [EMAIL PROTECTED]:/home/user# ping -w4 -i4 google.com
> ping: unknown host google.com
> [EMAIL PROTECTED]:/home/user# dhclient
> Internet Systems Consortium DHCP Client V3.0.2
> Copyright 2004 Internet Systems Consortium.
> All rights reserved.
> For info, please visit http://www.isc.org/products/DHCP
>
> sit0: unknown hardware address type 776
> sit0: unknown hardware address type 776
> Listening on LPF/sit0/
> Sending on LPF/sit0/
> Listening on LPF/eth0/52:54:00:12:34:56
> Sending on LPF/eth0/52:54:00:12:34:56
> Listening on LPF/lo/
> Sending on LPF/lo/
> Sending on Socket/fallback
> DHCPDISCOVER on sit0 to 255.255.255.255 port 67 interval 5
> DHCPREQUEST on eth0 to 255.255.255.255 port 67
> DHCPACK from 10.0.2.2
> bound to 10.0.2.15 -- renewal in 38164 seconds.
> [EMAIL PROTECTED]:/home/user# ifconfig
> eth0 Link encap:Ethernet HWaddr 52:54:00:12:34:56
> inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
> inet6 addr: fe80::5054:ff:fe12:3456/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:1 errors:0 dropped:0 overruns:0 frame:0
> TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:590 (590.0 b) TX bytes:720 (720.0 b)
> Interrupt:11 Base address:0xc100
>
> lo Link encap:Local Loopback
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:5970 errors:0 dropped:0 overruns:0 frame:0
> TX packets:5970 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:307089 (299.8 KiB) TX bytes:307089 (299.8 KiB)
>
> sit0 Link encap:IPv6-in-IPv4
> inet6 addr: ::127.0.0.1/96 Scope:Unknown
> UP RUNNING NOARP MTU:1480 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:2 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
>
> [EMAIL PROTECTED]:/home/user# ping -w4 -i4 127.0.0.1
> PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
>
> --- 127.0.0.1 ping statistics ---
> 2 packets transmitted, 0 received, 100% packet loss, time 3999ms
>
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>:/home/user#
>
>
>
> _Royce Souther <mailto:[EMAIL PROTECTED]>_
> _www.SiliconTao.com <http://www.SiliconTao.com>_
> Let Open Source help your business move beyond.
>
> For security this message is digitally authenticated by _GnuPG
> <http://www.gnupg.org>_.
>
>
>
>
>
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