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Old 04-04-2011, 07:41 PM
shirish शिरीष
Default network-manager,ifupdown and bittorrent Was network-manager as default? No!

Hi all,
I read the whole thread about network manager starting from

I am an average joe/user who has been a Ubuntu user for few years
while migrating to Debian during the Squeeze freeze cycle (about 6
months back) .

The system I run on is a desktop which is connects via ethernet to a
D-Link Modem/Router to net. While reading the thread I saw that there
is something called ifupdown which is managing stuff for me. I get a
dynamic IP assigned each time I log in and the connection is an ADSL
connection which is pretty much one of the main ways to connect to
Internet in India, although with laptops wireless is happening.

Ok, so in the interest of understanding of what's or how things are
happening, I first decided to see the contents of the package ifupdown

$ dpkg -L ifupdown

and then see the manpage of ifup and other things.

Then tried to run the various things as put up in the manpage :-

$ /etc/network/run/ifstate
bash: /etc/network/run/ifstate: Permission denied

It took me quite some time and trying all different things before I came to :-

$ cat /etc/network/run/ifstate


$ /usr/bin/perl /usr/share/doc/ifupdown/contrib/ifstate-check

neither of which tells me much about how things are configured
(something is hidden somewhere) .

Now as a user both the info. I have got doesn't tell me anything.

Its only after much playing around that I come to known ifconfig which
actually tells me what I need to know :-

~$ ifconfig
eth0 Link encap:Ethernet HWaddr some:alphanumeric:address
inet addr:ipv4.add.re.ss Bcast:ipv4.add.re.ss Mask:
inet6 addr: another.alphanumeric.address Scope:Link
RX packets:49733 errors:0 dropped:0 overruns:0 frame:0
TX packets:48783 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:55630643 (53.0 MiB) TX bytes:5838151 (5.5 MiB)
Interrupt:42 Base address:0xsomething

lo Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:445 errors:0 dropped:0 overruns:0 frame:0
TX packets:445 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:33957 (33.1 KiB) TX bytes:33957 (33.1 KiB)

Even though I am/was able to get this, from the past 6 months or so I
have not been able to run bittorrent on this and I do not know the
reason for this. Its a complete mystery to me. I am able to
update/upgrade the system, run .jigdo to update the weekly ISO DVD's
and do all kinds of git and svn stuff but unable to get bittorrent.

Even for the wireless thing, atleast in my country there are no longer
many open WiFi hotspots especially after the 2008 Mumbai attacks as
the terrorists used the wifi to publicize their attack on net.

Why bittorrent is not working still is a mystery to me, any help in
that regard would be appreciated.

The reason I share all of this is as a user I don't really know how my
system is configured and nor does ifupdown make it any way easy for me
to understand how its done. Atleast to me it seems cryptic in the way
its configures stuff and the way the manpages are written. They are
not written for the average joe to make head or tail of.

This is not for or against network-manager, this is just a user's
experience. As can be seen above, I'm no guru, in fact far far away
from that.

Just my 2 paise.
* * * * * Regards,
* * * * * Shirish Agarwal* शिरीष अग्रवाल
* My quotes in this email licensed under CC 3.0
065C 6D79 A68C E7EA 52B3* 8D70 950D 53FB 729A 8B17

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