Multicast packet sent without clustering

[Ammo]

My proxmox box is sending a multicast packet to 224.0.0.1 every 2min and 5s.

See firewall log below.

I do not have a cluster enabled on the server. I have searched the forum and have not found a solution to disable the multicast burst or limit it to a specific IP address.
Appreciate if someone can help me stop this.

Below is some details for my installation

root@proxmox:~# pveversion -v
pve-manager: 2.2-26 (pve-manager/2.2/c1614c8c)
running kernel: 2.6.32-14-pve
proxmox-ve-2.6.32: 2.2-80
pve-kernel-2.6.32-11-pve: 2.6.32-66
pve-kernel-2.6.32-16-pve: 2.6.32-80
pve-kernel-2.6.32-14-pve: 2.6.32-74
lvm2: 2.02.95-1pve2
clvm: 2.02.95-1pve2
corosync-pve: 1.4.4-1
openais-pve: 1.1.4-2
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.93-1
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.9-1
pve-cluster: 1.0-28
qemu-server: 2.0-64
pve-firmware: 1.0-21
libpve-common-perl: 1.0-37
libpve-access-control: 1.0-25
libpve-storage-perl: 2.0-34
vncterm: 1.0-3
vzctl: 4.0-1pve2
vzprocps: 2.0.11-2
vzquota: 3.1-1
pve-qemu-kvm: 1.2-7
ksm-control-daemon: 1.1-1

root@proxmox:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 1c:6f:65:c3:cf:f6
          inet6 addr: fe80::1e6f:65ff:fec3:cff6/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:753896 errors:0 dropped:0 overruns:0 frame:0
          TX packets:284954 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:515853438 (491.9 MiB)  TX bytes:44372247 (42.3 MiB)
          Interrupt:30 Base address:0x2000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:84490 errors:0 dropped:0 overruns:0 frame:0
          TX packets:84490 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:30114449 (28.7 MiB)  TX bytes:30114449 (28.7 MiB)

venet0    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet6 addr: fe80::1/128 Scope:Link
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:3 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vmbr0     Link encap:Ethernet  HWaddr 1c:6f:65:c3:cf:f6
          inet addr:192.168.1.110  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::1e6f:65ff:fec3:cff6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:751797 errors:0 dropped:0 overruns:0 frame:0
          TX packets:282753 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:504739909 (481.3 MiB)  TX bytes:43165285 (41.1 MiB)

root@proxmox:~# ip r
192.168.1.0/24 dev vmbr0  proto kernel  scope link  src 192.168.1.110
default via 192.168.1.1 dev vmbr0

root@proxmox:~# brctl show
bridge name     bridge id               STP enabled     interfaces
vmbr0           8000.1c6f65c3cff6       no              eth0

root@proxmox:~# cat /etc/network/interfaces
# network interface settings
auto lo
iface lo inet loopback

iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
        address  192.168.1.110
        netmask  255.255.255.0
        gateway  192.168.1.1
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0