Description of Problem:
Dell Precision Workstation 530
I came across this by accident, if eth0 is up and running and "ifup eth0"
is ran it will bring down the network card. Deleting /var/run/dhcpcd-
eth0.pid, will allow you to run ifup eth0 without errors and bring the
network back up. This happens with Intel and 3Com cards.
Steps to Reproduce:
1.Run ifup eth0 twice
Running ifup eth0 twice should not bring down the NIC.
This defect is considered MUST-FIX for Fairfax
Should be fixed in 6.13-1.