Configuring Network inteface for routed mode?

[dzchimp]

I have a new dedicated server from online.net which sets up network in bridged mode by default.

cat /etc/network/interfaces

auto lo
iface lo inet loopback
# The primary network interface
auto vmbr0
iface vmbr0 inet static
        address 62.210.137.37
        netmask 255.255.255.0
        network 62.210.137.0
        broadcast 62.210.137.255
        gateway 62.210.137.1
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0

Here, 62.210.137.37 is my primary IP.

I have purchased two additional failover IPs and would like to add these via Proxmox to the new containers. How can I change my network configuration to add the failover IP 212.83.161.20 to Proxmox, so that I can add it to a new container?

Going by the Wiki over here: http://pve.proxmox.com/wiki/Network_Model , I had setup the following:

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
        address  62.210.137.37
        netmask  255.255.255.0
        gateway  62.210.137.0
        post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp




auto vmbr0
iface vmbr0 inet static
        address  212.83.161.20
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0

However, on restarting, I lost ping for the primary IP too. I really am not a networking expert, and just starting to learn about servers, and this is my first dedi. Any help would be great.