[olug] Ubuntu losing network

[Larry Walls]

Update on my networking issue.  I do think I originally had a networking
issue which has been resolved with a new patch cable (sometimes simple is
best).

Now the box seems to be stable and functioning properly except with samba.
If I DO NOT do anything with samba shares on the box, it is stable and
remains connected to the network.  If I begin using the samba shares, the
box drops from the network and a ping from the box yields:

sendmsg: No buffer space available.

Any ideas?

On Tue, Nov 25, 2008 at 8:49 PM, Larry Walls <larry.walls at gmail.com> wrote:

> Another update and thanks again to everyone.  I am just keeping one set of
> things tried:
>
> Moved to another port on the switch, same issue.
> Changed the patch cable, same issue.  Although I did realize I was
> connected via Cat5 at GB speed so I swapped the patch cable for Cat 6.
> Still same issue.
> Booted from LiveCD and have not had the issue again.  I will let it run
> overnight just to make sure but so far so good (or bad as the case may be).
> Ethtool reports both are set to autonegotiate (basically gave me the same
> report as the sample provided).
>
>
>
>
> On Tue, Nov 25, 2008 at 6:24 PM, Christopher Cashell <topher-olug at zyp.org>wrote:
>
>> On Tue, Nov 25, 2008 at 4:22 PM, Larry Walls <larry.walls at gmail.com>
>> wrote:
>> > Here is another tidbit of info.  Looking back at some ifconfig results I
>> > found this:
>> >
>> > When the box is connected and working, ifconfig reports eth0 and lo with
>> a
>> > correctly assigned IP address to eth0.  When the box is not working,
>> > ifconfig reports no IP address assigned to eth0, continues to report lo,
>> but
>> > now also reports eth0:avahi with an IP address of 169.254.7.151.  I
>> dont
>> > know where or what this is coming from and obviously that IP address is
>> no
>> > good on my network.
>>
>> This was the first thing that came to me when I was reading your
>> original e-mail, because I've had some serious issues with avahi on
>> Ubuntu on a laptop.  It is supposed to be some sort of zeroconf
>> program to setup networking on small networks with no real network
>> config (as I understand it, I only glanced at it briefly).  All it's
>> ever been to me was a huge pain in the ass.
>>
>> The fact that the Ethernet link seems to be dropping makes me think
>> your specific issue here might not be related to avahi, but I would
>> strongly recommend killing it entirely and seeing if that helps any.
>> It was taking over the default route on my box and killing network
>> connectivity constantly until I removed it.
>>
>> --
>> Christopher
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>
>