Problems to add additional IP to virtual machine

Primarily a greeting I contact you because I have had some problems with the installation of an additional IP, Here I explain my case.


I have a dedicated server with Proxmox 3.0


A (dedicated server): 192.99.xxx.xxx
B (Virtualized Server): 192.95.2xx.xxx (OS: Centos 6 + cPanel )
C (IP Failover) 192.95.1xx.xxx


I have managed to configure the primary IP of the virtualized server successfully, now this virtual server (B), I want to add an additional IP (C) to use app as DNS server so far I have not managed to do it and not find a way to add an additional IP to the VM (B), i try some post but cannt get it work.

root@n:~# nano /etc/network/interfaces
GNU nano 2.2.6 Fichero: /etc/network/interfaces


netmask 255.255.255.0
network 192.99.xxx.xxx
broadcast 192.99.xxx.xxx
gateway 192.99xxx.xxx
bridge_ports eth0
bridge_stp off
bridge_fd 0




Thank you for your help.