[K12OSN] sudden apearance of X errors - solved

Les Mikesell lesmikesell at gmail.com
Tue May 10 22:29:19 UTC 2011

On 5/10/2011 4:22 PM, Julius Szelagiewicz wrote:
> Barry,
> 	server 64 bit Centos 5.6, Ltsp 32 bit 4.x.
> Turns out I was chasing my own tail. The problem turned out to be hardware
> related, more specifically, network related. A well meaning soul laid his
> hands on the key to the attendance hand scanner and to make sure it works
> perfectly well changed the address on it to be the same as the eth0
> address on the server. People won't tell me who it was.
> 	I went about finding the solution by first admitting it is not a
> software problem and then disconnecting switches from the stack. Once I
> got it down to a particular switch I disconnected all the ports and
> reconnected them one by one. Culprit was found, but not immediately. What
> a pain.

I was going to suggest watching the network activity with wireshark but 
I'm not sure you would have seen packets from the rouge device - the 
switch probably would have diverted the ones that should have been 
coming to you.

   Les Mikesell
    lesmikesell at gmail.com

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