OpenVZ ARP Problems - Host keeps announcing VM after migration

[flosoft]

Hi,

I've got 2 Proxmox hosts with a few OpenVZ CTs with venet interfaces.
Until Proxmox 2.2 I was able to migrate them online from one node to another without any issue. However with Proxmox 2.2, the host seems to keep announcing the IP to the routers even though the VM is not on that host anymore.

A sample host network configuration:

# 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

# for Routing
auto vmbr1
iface vmbr1 inet manual
    post-up /etc/pve/kvm-networking.sh
    bridge_ports dummy0
    bridge_stp off
    bridge_fd 0

# vmbr0: Bridging. Make sure to use only MAC adresses that were assigned to you.
auto vmbr0
iface vmbr0 inet static
        address 46.105.129.242
        netmask 255.255.255.240
        network 46.105.129.240
        broadcast 46.105.129.255
        gateway 46.105.129.254
        bridge_ports eth0.2152
        bridge_stp off
        bridge_fd 0
        up ip route add 178.32.238.128/26 dev vmbr0
        up ip route add 91.121.227.128/28 dev vmbr0
        up ip route add 46.105.139.64/27 dev vmbr0
        up ip route add 91.121.228.32/28 dev vmbr0

iface vmbr0 inet6 static
    address 2001:41d0:0098:6810::42
    netmask 56
    up ip -6 ro add 2001:41d0:0098:6800::/56 dev vmbr0
    gateway 2001:41d0:0098:68ff:ffff:ffff:ffff:ff7f
    post-down ip -6 ro del 2001:41d0:0098:6800::/56 dev vmbr0
    bridge_ports eth0.2152
    bridge_stp off
    bridge_fd 0

Any idea what's going wrong here?