[CentOS] IP addressing migration

[Alex Palenschat]

> Hi,
>  
> I am changing the IP addressing in my centOS server which 
> works as mail server. The question I have is, if I define the 
> new IP addresses
> (sub-interfaces) on the server, can I work with both ranges 
> at the same time despite I have only one default gateway 
> configured? (on the old range) Or may I have two default 
> gateways in centOS? 
>  
> --Ivan. 

Answer may be determined by whether those 2 ip are in the same subnet or
not. If they are it will work fine, if not there are some workarounds:

http://www.linode.com/wiki/index.php/Multiple_IPs

alex