one server, two IPs, how?

ok I have a dedicated server running a RH7.2 on a 2.4.28 kernel.
By default my host only provides one IP address configured with the server, but i need a new one (i want to run two different http servers on the machine).
So i ordered an IP from my host, which he provided to me, after having asked me what i wanted as the reverse DNS (i said i wanted the IP to be used by subdomain.domain.com and gave my server name as the dns server, since i wasn't too sure what "reverse dns" meant).

now, what do i have to do to actually have this IP point at my server ? I've had a hard time finding documentation on something like this (is this what is called multi-homing ?).
Reading at some resources it seems i have to run something like
ifconfig eth0:1 10.9.9.9
But it seems this doesn't persist a machine reboot.
An advice on how to have it persistant ? On what to do on the DNS side ?

If you haven't guessed, I'm knid of a beginner to all this so thanks for all your help and thanks even more if your explanations are easy to understand for a hosting newbie one server, two IPs, how?.

 

 

 

 

Top