Can't enable IPv6 ...

[TiTex]

Hi , i'm trying to set up an IPv6 enabled box on a vmware machine but i can't figure it out ... it just doesn't work
i've tried with ubuntu,opensuse,centos,redhat ... none of them work
on the host PC ipv6 protocol it's enabled
on the guest (i've stuck with redhat since i'll use centos)
/etc/sysconfig/network

NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=server.example.lan

# lsmod | grep ipv6
ipv6 229581 36


i can't even ping the loopback address ::1 or the link local
ping: unknown host ::1
ping: unknown host fe80::20c:29ff:fe77:60c8

any ideeas what could be wrong ?
---------------------------------------------------------------

nevermind , i was using the wrong tool )
i forgot that on linux we have a ping6 binary