I'm a bit new to linux and I have a CentOS 5 server and I'm having trouble after assigning additional IP addresses.


I was told to do this:
/sbin/ifconfig lo 127.0.0.1
/sbin/ifconfig eth0 up
/sbin/ifconfig eth0 mainip
/sbin/ifconfig eth0:0 additionalip


So I do all that and everything seems to be working fine, although once I do that some people are unable to connect to voice communication software(teamspeak) that I'm hosting on my server, although they are able to connect to the webserver.

When I restart the server and the changes are undone they are able to connect again.


I'm really clueless right now so any help would be greatly appreciated.

Just for curiousity sake why do you want to create a virtual interface?
What IP address ranges are you using?

I need virtual interfaces for the same reason as the guy was asking in here linuxquestions.org/questions/linux-networking-3/virtual-interface-routing-819716/ with a different bandwidth setting only
However, there solution was far from being useful to me.