Adding private IP ...

I just tried to add a private IP to my Linode (as described in the Network tab of the Linode Manager). As usual, I created the virtual interface eth0:0, here is /etc/network/interfaces:

....
auto eth0:0
iface eth0:0 inet static
        address 192.168.136.xxx
        netmask 255.255.128.0

ifconfig:

eth0:0    Link encap:Ethernet  HWaddr fe:fd:48:0e:ba:c9
          inet addr:192.168.136.xxx  Bcast:192.168.255.255  Mask:255.255.128.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

route:````
Destination Gateway Genmask Flags Metric Ref Use Iface
72.14.186.0 * 255.255.255.0 U 0 0 0 eth0
192.168.128.0 * 255.255.128.0 U 0 0 0 eth0
default gateway52.linod 0.0.0.0 UG 0 0 0 eth0

````
I did restart the server and the networking services. Howeer, this seems to not work - if I try to access my other linode, i keep getting "No route to host" or "Destination Host Unreachable" errors.