[CentOS] Networking help

Thu Apr 24 20:54:37 UTC 2008
Ray Leventhal <centos at swhi.net>

Les Mikesell wrote:
> Chris Mason (Lists) wrote:
>> Ray Leventhal wrote:
>>> I'm no expert, but I'd be the HWADDR values in your 
>>> /etc/sysconfig/ifcfg-ethx files need to be updated to reflect the 
>>> new MAC addresses of the physical interfaces in the box.
>> Done that. The ifcfg-ethX is referencing the right interfaces.
> Sometimes ISPs limit the DHCP address(es)to known MAC addresses.  If 
> that's the case there may be some timeout or a way to reset it.
I was actually thinking along the lines of IP/Mac issues and so was 
going to ask if the OP had static IP addresses or dynamic ones.  With my 
colo facility, when I change NICs, I almost always have to ask them to 
flush the ARP cache to get traffic flowing.