Cannot run Docker on OpenVZ

[decibel83]

Hi.
I have a Proxmox 3.4 installation running on kernel 2.6.32-43-pve, and I'm following the guide at https://openvz.org/Docker_inside_CT to run Docker inside an OpenVZ container.

The problem is that when I try to enable netfilter support to the container it does not work:

root@node1:/var/log/pve/tasks/2# vzctl set 151 --netfilter full --save
vzctl: unrecognized option '--netfilter'

This is my system's details:

root@node1:/var/log/pve/tasks/2# pveversion -v
proxmox-ve-2.6.32: 3.4-177 (running kernel: 2.6.32-43-pve)
pve-manager: 3.4-15 (running version: 3.4-15/e1daa307)
pve-kernel-2.6.32-39-pve: 2.6.32-157
pve-kernel-2.6.32-46-pve: 2.6.32-177
pve-kernel-2.6.32-26-pve: 2.6.32-114
pve-kernel-2.6.32-43-pve: 2.6.32-166
lvm2: 2.02.98-pve4
clvm: 2.02.98-pve4
corosync-pve: 1.4.7-1
openais-pve: 1.1.4-3
libqb0: 0.11.1-2
redhat-cluster-pve: 3.2.0-2
resource-agents-pve: 3.9.2-4
fence-agents-pve: 4.0.10-3
pve-cluster: 3.0-20
qemu-server: 3.4-9
pve-firmware: 1.1-5
libpve-common-perl: 3.0-27
libpve-access-control: 3.0-16
libpve-storage-perl: 3.0-35
pve-libspice-server1: 0.12.4-3
vncterm: 1.1-8
vzctl: 4.0-1pve6
vzprocps: 2.0.11-2
vzquota: 3.1-2
pve-qemu-kvm: 2.2-27
ksm-control-daemon: 1.1-1
glusterfs-client: 3.5.2-1

Could you help me please?

Thank you very much!