IPv6: Configure unnumbered interface

[csatf03eu]

Hi,

i've got a HP e5406 (image version K.15.08.0013). I want to use a vlan as unnumbered ipv6 interfaces. The vlan is configured like this:

Spoiler

vlan 200
    ipv6 enable
    ipv6 nd ra prefix 2001:db8:0:1:/64

I  set a static route to that vlan:

Spoiler

ipv6 route  2001:db8:0:1:/64 vlan 200

I set up a link local IPv6 on loopback:

Spoiler

interface loopback 1

     ipv6 address 2001:db8::ffff

In Cisco IOS i would map the unnumbered vlan to the loopback address  via:

Spoiler

vlan 200

    ipv6 unnumbered loopback 1

This is not possible on the hp switch. Everything is working fine, but there is a wrong source address (::) in packets from the switch (e.g. in traceroutes)...