Re: loopback device not configured automatically

["Roman V.Leon." <roman-vl@meta.ua>]

Hello my friend, it is very strange that your /etc/network/interfaces is 
empty, you should use the file to configure your interfaces and as far 
as I know - this file is not regenerated by any service. Please see man 
5 interfaces and you will find the information how to setup your 
interfaces properly, it is quite simple if you need common settings.

> Hi,
>      i am having trouble with my network manager,
>     when i do `ifconfig` i can't see loopback device although it shows my
> machine's ip ,mac address and other info.
>     also,i cant perform
> `#ifdown eth0` , ` #ifdown lo ` ,`#ifup eth0` ,`#ifup lo`
>
>
> i get following error
>
> root@localhost:~# ifdown eth0
> ifdown: interface eth0 not configured
>
> ~
> root@localhost:~# ifdown lo
> ifdown: interface lo not configured
>
>
>
> my "/etc/network/interfaces" file is empty,if i manually add following
> lines in interfaces file everything works fine.
>
> ---------------------------------------
> auto lo
> iface lo inet loopback
>
> auto eth0
> iface eth0 inet dhcp
> ----------------------------------------
>
> on normal system above settings are populated by itself(may be some
> service is doing it) in "/etc/network/interfaces" file.
>
> but on my system it's not working automatically ,do i need to enable any
> service to have this feature
>
>
> thanks,

--
Cheers,
Roman V.Leon.