[CentOS] NIC recongized but cant ping

[Gordon Messmer]

On 06/13/2015 05:26 AM, Rafeal Stewart wrote:
> The only card that works out of the box is my only PCIE intel dual 1000
> nic. my PCIX based intel pro 1000 nor my realk r8169 nics work, yet
> debian sees the NIC. I can bring them up and configure no errors. I just
> cannot ping anything on my lan

Are you connecting all of the Ethernet adapters to the same LAN, with 
different addresses in the same IP subnet?  You might have a problem 
with arp flux...