In my CentOS 6.2 server, I have the following configuration for networking:
NetworkManagerpackage wasn't installed
eth0I have a DHCP configuration
eth0:1alias interface I have a static IP, lets say
When I have connected my server to internet and boot up, both interfaces are brought up well, but when I don't have a connection to the internet (with other words, when it isn't allocated an IP through DHCP to the main interface) and boot up, the alias interface is also down.
Question: Is there a way to prevent this behavior? Or how to bring up the alias interface when boot up the server, even if the main interface is down?