lofenee illuminated alt.os.linux.ubuntu by typing:
> I did a customized livecd from ubuntu-livecd-7.04, and modified the
> /etc/network/interfaces to set a static ip.
>
> However the /etc/network/interfaces file was changed to DHCP during the
> startup and different from /rofs/etc/network/interfaces(which is extracted
> from the filesystem.squashfs.
>
> I don't know when and how the /etc/network/interfaces was changed?
>
> Could someone help me out?

It's usually the network manager application that changes it.

There have been numerous reports of network manager causing problems
for people, and hopefully they'll sort this out.

I think it should do a check for modifications before automagically
changing these system files for you. That would be a start.

--
“Chopsticks are one of the reasons the Chinese never invented
custard� ~ Spike Milligan.

> I don't know when and how the /etc/network/interfaces was changed?
>
> Could someone help me out?

The simple solution: reset it using ifconfig in /etc/init.d/rc.local

The complex solution: find out how /etc/init.d/networking works

The reason: The LiveCD might be using a different networking script...

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"Man-wai Chang ToDie (33.6k)" ?¤J®ø®§·s?:48cf9f98$0$90275$14726298@news.sunsite. dk...
>> I don't know when and how the /etc/network/interfaces was changed?
>>
>> Could someone help me out?
>
> The simple solution: reset it using ifconfig in /etc/init.d/rc.local

Yes, it works.
While i still want to find out why the /etc/network/interfaces doesn't work.


> The complex solution: find out how /etc/init.d/networking works
>
> The reason: The LiveCD might be using a different networking script...

Actually the networking script is the same as that on desktop. Because
"/etc/init.d/networking restart" can take the modification of file
'interfaces' into effect without changing the file itself.

"Moog" дÈëÏûÏ¢ÐÂÎÅ:slrngcuvr3.bvq.efcmoog@hardy.invalid. ..
> lofenee illuminated alt.os.linux.ubuntu by typing:
>> I did a customized livecd from ubuntu-livecd-7.04, and modified the
>> /etc/network/interfaces to set a static ip.
>>
>> However the /etc/network/interfaces file was changed to DHCP during the
>> startup and different from /rofs/etc/network/interfaces(which is
>> extracted
>> from the filesystem.squashfs.
>>
>> I don't know when and how the /etc/network/interfaces was changed?
>>
>> Could someone help me out?
>
> It's usually the network manager application that changes it.
>
> There have been numerous reports of network manager causing problems
> for people, and hopefully they'll sort this out.
>
> I think it should do a check for modifications before automagically
> changing these system files for you. That would be a start.

You are likely to be right.
How can i confirm that the network manager app changes it?
Also, can i stop its behavior, by uninstalling the network manager or just
changing some config files?

lofenee illuminated alt.os.linux.ubuntu by typing:
> "Moog" дÈëÏûÏ¢ÐÂÎÅ:slrngcuvr3.bvq.efcmoog@hardy.invalid. ..
>> lofenee illuminated alt.os.linux.ubuntu by typing:
>>> I did a customized livecd from ubuntu-livecd-7.04, and modified the
>>> /etc/network/interfaces to set a static ip.
>>>
>>> However the /etc/network/interfaces file was changed to DHCP during the
>>> startup and different from /rofs/etc/network/interfaces(which is
>>> extracted
>>> from the filesystem.squashfs.
>>>
>>> I don't know when and how the /etc/network/interfaces was changed?
>>>
>>> Could someone help me out?
>>
>> It's usually the network manager application that changes it.
>>
>> There have been numerous reports of network manager causing problems
>> for people, and hopefully they'll sort this out.
>>
>> I think it should do a check for modifications before automagically
>> changing these system files for you. That would be a start.
>
> You are likely to be right.
> How can i confirm that the network manager app changes it?

$ cat /etc/network/interfaces after nm-applet runs.

> Also, can i stop its behavior, by uninstalling the network manager or just
> changing some config files?

You can replace the Network Manager with wicd, which seems to have
worked for some people.

wicd uninstalls the nm for you on install.
http://wicd.sourceforge.net/

--
People always ask me, "Where were you when Kennedy was shot?" Well, I
don't have an alibi." ~ Emo Philips

Moog wrote:

> You can replace the Network Manager with wicd, which seems to have
> worked for some people.
>
> wicd uninstalls the nm for you on install.
> http://wicd.sourceforge.net/

I'll second that. I had nothing but trouble with NM - WICD fixed all my
networking problems.

C.

I have unintalled NM and installed WICD.

The ip configuration isn't changed automatically during the OS runtime,
while file "/etc/network/interfaces" is still different from that one put in
the filesystem.squashfs after OS booted from livecd.
I guess it may be a problem due to livecd. It seems that the file will be
distorted during livecd booting.

Distorted file content is like following:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eth2
iface eth2 inet dhcp

auto ath0
iface ath0 inet dhcp

auto wlan0
iface wlan0 inet dhcp


Though there are no such network devices as 'eth1, eth2, ath0, wlan0' on my
machine. And it's the same everywhere the livecd boots.
Could anyone tell me WHAT's wrong?

On 2008-09-18, lofenee hit the keyboard and wrote:
> I have unintalled NM and installed WICD.
>
> The ip configuration isn't changed automatically during the OS runtime,
> while file "/etc/network/interfaces" is still different from that one put in
> the filesystem.squashfs after OS booted from livecd.
> I guess it may be a problem due to livecd. It seems that the file will be
> distorted during livecd booting.



> Though there are no such network devices as 'eth1, eth2, ath0, wlan0' on my
> machine. And it's the same everywhere the livecd boots.
> Could anyone tell me WHAT's wrong?

You assume that its wrong, but if this is the *LIVE-CD* and not a
actual installed OS I think this is on purpose. For those people who
might have more then *one* card in their PC.
I think I recall having seen this in a Mint install I tried too.
Does this cause any problems? I.E. you don't get connected to the
Internet?

I have the situation here that there is a second NIC onboard, and
every time (which is daily) the PC boots up I need to restart eth0

"sudo ifup eth0"

(you could use this and modify it for your own situation)

even after disabling the NIC in the bios the same behavior is
noticed.

as to the file /etc/networking/interfaces.

You can: either comment them lines out by putting the # character
in front of it. Or you can erase them.

In my own case I will also comment it out.

>
>



Dragomir Kollaric
--
"When science discovers the center of the universe, a lot of
people will be disappointed to find they are not it."
>> Bernard Baily <<

"Dragomir Kollaric"
??????:20080918194032.701@DK-Slivowitz.org.invalid...
> On 2008-09-18, lofenee hit the keyboard and wrote:
>> I have unintalled NM and installed WICD.
>>
>> The ip configuration isn't changed automatically during the OS runtime,
>> while file "/etc/network/interfaces" is still different from that one put
>> in
>> the filesystem.squashfs after OS booted from livecd.
>> I guess it may be a problem due to livecd. It seems that the file will be
>> distorted during livecd booting.
>
>
>
>> Though there are no such network devices as 'eth1, eth2, ath0, wlan0' on
>> my
>> machine. And it's the same everywhere the livecd boots.
>> Could anyone tell me WHAT's wrong?
>
> You assume that its wrong, but if this is the *LIVE-CD* and not a
> actual installed OS I think this is on purpose. For those people who
> might have more then *one* card in their PC.
> I think I recall having seen this in a Mint install I tried too.
> Does this cause any problems? I.E. you don't get connected to the
> Internet?
>
> I have the situation here that there is a second NIC onboard, and
> every time (which is daily) the PC boots up I need to restart eth0
>
> "sudo ifup eth0"
>
> (you could use this and modify it for your own situation)
>
> even after disabling the NIC in the bios the same behavior is
> noticed.
>
> as to the file /etc/networking/interfaces.
>
> You can: either comment them lines out by putting the # character
> in front of it. Or you can erase them.
>
> In my own case I will also comment it out.

For a LIVE-CD, this configuration of /etc/networking/interfaces is definitly
a good feature. I think there is no need for live-cd to modify it during
bootup instead of using the file compressed in the filesystem.squashfs.
And now i just wonder who modify/create the default configuration file
'/etc/networking/interfaces'?
There seems no such documentation on that, isn't there?

On 2008-09-20, lofenee hit the keyboard and wrote:

>
> For a LIVE-CD, this configuration of /etc/networking/interfaces is definitly
> a good feature. I think there is no need for live-cd to modify it during
> bootup instead of using the file compressed in the filesystem.squashfs.
> And now i just wonder who modify/create the default configuration file
> '/etc/networking/interfaces'?
> There seems no such documentation on that, isn't there?

I wouldn't know the answer for this. I've *edited* a few of
these files, when the need arose, but I didn't bother to
figure out who/how these files were created.

Also I think the file should be edited (automatically) when
one sets up the NIC running the Live-CD.

I've looked into my own file and there is only one more
entry for it the second (on-board NIC). Yesterday I tried
"Knoppix" and it only created a file for one NIC, while Mint
(older version) creates the same entries as you have posted.

For me the question is, does this in any way create some
problems on your box? If not I wouldn't bother much more
with this.

>
>



Dragomir Kollaric
--
This signature is licensed under the GPL and may be
freely distributed as long as a copy of the GPL is included... :-)

> I've looked into my own file and there is only one more
> entry for it the second (on-board NIC). Yesterday I tried
> "Knoppix" and it only created a file for one NIC, while Mint
> (older version) creates the same entries as you have posted.
Yes, it depends on the flavor of LiveCD. I used the ubuntu-7.0.4

> For me the question is, does this in any way create some
> problems on your box? If not I wouldn't bother much more
> with this.
No, though it did cause problem at first, as I thought configuring
'interfaces' file is the direct way to set my live-cd to bootup with a
static ip.
As a workaround, now i configure the script rc.local to modify 'interfaces'
file again and restart networking service.
Anyway thank you for your quick response.