debian wheezy ipv6 address virtual server


i have a debian wheezy 7.1 with fresh install virtualmi native ipv6,
adding and removing virtual server with private IPv6 is working fine but there is an error removing virtual server:

Deleting mail aliases …
… done
Removing IPv6 address 2a01:X::50 …
… IPv6 address failed! : Not removing primary IPv6 interface at /usr/share/webmin/ line 1376.

Deleting AWstats configuration file and Cron job …
… done

but the IPv6 address is removed successfully.
the network is configured in bridge mode.

before i start using this box, is virtualmin even ipv6 ready?

Best Regards,