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Network Problems

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Hello together,
I have got a new server and I want to setup the network on it.
The main-ip address of the host is 84.200.193.130.

The rest of the /26 Subnet (131-190) should be available for the virtual machines.

If I setup a OpenVZ machine - the network works perfect.
But if I try to use KVM, the machine seems to not get any network connectivity!

/etc/network/interfaces on host:
Code:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
    address 84.200.193.130
    gateway 84.200.193.129
    netmask 255.255.255.192
   
auto vmbr0
iface vmbr0 inet static
    address 84.200.193.130
    netmask 255.255.255.192
    bridge_ports none
    bridge_fd 0
    bridge_stp off
    route add -host 84.200.193.128/26 dev vmbr0

And on my Windows- or Linux-Guest in KVM I setted up:
Code:

IP-Address: 84.200.193.131
Netmask: 255.255.255.192
Gateway: 84.200.193.130

But on both - Windows and Linux - the VM isn't able to get any connection!

What did I do wrong?

Thanks for your help! :D

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