configuration for eth3 not found
take a look in
/etc/sysconfig/network-scripts and make sure that ifcfg-eth3
I'm such a bonehead at times. This caused a situation where a
friend's windows laptop would connect to the network just fine but my
kluge-box wouldn't. Nothing was getting logged. I didn't notice until
I started running all of the commands manually.
Based on the number of
times this shows up in Google, this is a common problem.