IPv6 sous Ubuntu

Bonjour,

J'ai un VPS sous Ubuntu 11.04 avec 3 IPv4 adresses et 3 IPv6.

J'aimerais pouvoir utiliser les IPv6 mais je ne sais comment m'y prendre ! Les solutions via google ne marchent pas pour moi. :(

Voilà mon /etc/network/interfaces :

# This configuration file is auto-generated.
# Auto generated lo interface
auto lo
iface lo inet loopback

# Auto generated venet0 interface
auto venet0
iface venet0 inet manual
	up ifconfig venet0 up
	up ifconfig venet0 127.0.0.2
	up route add default dev venet0
	down route del default dev venet0
	down ifconfig venet0 down


iface venet0 inet6 manual
	up ifconfig venet0 add 2a02:xxxx:2:5:0:201:2153:13/128
	down ifconfig venet0 del 2a02:xxxx:2:5:0:201:2153:13/128
	up ifconfig venet0 add 2a02:xxxx:2:5:0:201:2153:12/128
	down ifconfig venet0 del 2a02:xxxx:2:5:0:201:2153:12/128
	up ifconfig venet0 add 2a02:xxxx:2:5:0:201:2153:11/128
	down ifconfig venet0 del 2a02:xxxx:2:5:0:201:2153:11/128
	up ifconfig venet0 add 2a02:xxxx:2:5:0:201:2153:10/128
	down ifconfig venet0 del 2a02:xxxx:2:5:0:201:2153:10/128

auto venet0:0
iface venet0:0 inet static
	address xx.yy.187.126
	netmask 255.255.255.0

auto venet0:1
iface venet0:1 inet static
	address xx.yy.187.94
	netmask 255.255.255.0

auto venet0:2
iface venet0:2 inet static
	address xx.yy.187.95
	netmask 255.255.255.0

<config>Windows Vista / Firefox 8.0</config>

Merci d'avance !