KVM in remote server with bridge in a single ethernet interface

Hi,

I have only one ethernet port in a remote server. (eth0)

I have a public address with x.x.x.164 netmask 255.255.255.240 gw x.x.x.161

and want to use in my guest OS the next available ip address (x.x.x.165 netmask 255.255.255.240 gw x.x.x.161)

Is this posible with brctl to achieve this?

I did a file called ifcfg-br0 with:

DEVICE=br0
TYPE=Bridge
BOOTPROTO=none
BROADCAST=x.x.x.175
HWADDR=xx:xx:xx:xx:xx:xx
IPADDR=x.x.x.164
NETMASK=255.255.255.240
NETWORK=x.x.x.160
ONBOOT=yes
GATEWAY=x.x.x.161

then replace ifcfg-eth0 with:
DEVICE=eth0
BRIDGE=br0
#BOOTPROTO=none
ONBOOT=yes

then reboot, after that i use:

I was connected to my remote server but problems begin when I assigned the x.x.x.165 ip addres to the guest OS with

virt-manager to begin installation. I lost the remote connection. Maybe I miss something to avoid loosing the connection ?

i'm still receiving ping from x.x.x.165 but x.x.x.164 is not responding.