Re: [tlug] losing network on Debian kernel recompiles/updates

[Scott <scottro@example.com>]

On Sun, Feb 15, 2004 at 03:26:33PM +0900, Charles Muller wrote:
> 
> I've begun to notice in my two months of using Debian, that every time I
> attempt a kernel upgrade/recompile, I lose my (DHCP) network connection,
> and have difficulty getting it back. At first, I had been attributing
> the problem to an odd network card, but now it has also happened to me
> on some other machines, and I realize that I must be missing out on
> something that I should be doing.

One quick guess, because something similar happened to me--in my case,
it would get an address, but not be able to connect to anything.  The
Deb kernel, (at least kernel_sources) seem to have, in the tcp/ip
section Explicit Congestion Notification turned on by default (at least
in the 2.6 kernel).  This can cause various problems (as warned about in
the help for that option).  

Now, whether this has ~anything~ to do with your problem or not, I have
no idea.  It's just that whenever I hear, (or read, I suppose) "I use
Debian, upgraded my kernel and now I have network problems," I always
look at that first.

In many cases, it has turned out to be the issue.  (However those more
knowledgeable about Debian and/or networking might point out that in
this case, there's no possible connection).


-- 

Scott Robbins

PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 D575 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

Buffy: Cool. You guys can do the brain thing. I'm gonna go to 
class. 
Oz: Which could also be construed as the brain thing.

Attachment: pgp00039.pgp
Description: PGP signature