[CentOS] Networking just stopped working

[Christopher Chan]

On Tuesday, July 06, 2010 09:21 PM, Chan Chung Hang Christopher wrote:
> Les Mikesell wrote:
>> Chan Chung Hang Christopher wrote:
>>> Christopher Chan wrote:
>>>> And now the thing is working again...
>>> It's not working again.
>>>
>>> Running tcpdump -i vlan seems to trigger something to get the network
>>> working again but as soon as I stop tcpdump...nada, zip, zilch.
>>>
>>> Any ideas? I see no errors in the logs whether of the switch or the box,
>>> just about everything reports fine. Would the loading of the kernel
>>> bridge module cause this?
>>
>> Running tcpdump would put the interface in promiscuous mode.  Does your setup
>> need this to work?
>>
>
> I don't think so. The thing was working fine since December last year
> until this morning. Then poof! I just realized I forgot to boot older
> kernels to check for the same problem...

Box behaving for the moment after tcpdump was run on one of the 
interfaces and then stopped. I'll just wait for the next weirdo event.