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