I don't use Cent ever, but if it's anything like Ubuntu, you get either 
a) network interfaces file ala sysconfig scripts in rh derivatives or b) 
NetworkManager controlling everything, but not both.  If NM is running 
your stack, than it's likely ignoring those configurations as it 
contains all that in dbus and /etc/NetworkManager or like.

If that is a wireless nic, I still think the wireless isn't giving you 
another address, and likely won't in all cases.  Reason is typically 
wireless is meant to have a single client per security association.  
This is usually controllable to some aspect. There's a reason to prevent 
this - someone bridging their laptop to strong encrypted wireless, and 
representing it via old wep or like I can crack with my phone.  Might 
work at home, but don't always expect that to work in more strict 
environments.

Does the system have a wired nic on it?  Have you tested with that?

If you want to see the transaction, "tcpdump -i enp0s3 port 67 or port 
68" that "outside" interface and see if you see the dhcp packet leave 
the wireless.  If you get no response, your router/ap doesn't like 
another request.  If not leaving that interface, it's a local system issue.

Packets on the wire trump all, see if there are any.

-mb


On 02/04/2015 01:07 AM, Michael Torres wrote:
> I didnt think that was the reason. just for the simple fact that  I 
> was connected wirelessly at Starbucks......their router assigned me an 
> IP address using the enp0s3 file.
>
> anyways,  I removed the device and reinstalled, still the same thing.  
> I still think its a setting in my router or perhaps Windows strikes 
> again and there is something in the Network Manager that I dont 
> understand.
>
> How frustrating.....anyways, thanks for the help, if you think of 
> anything else, please let me know.
>
> Going to bed now..
>

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