VirtualBox and IPv6?

I need IPv6 support as I need access to some sites that don't run IPv4. as
far as I can tell, I can't do this on VB... at least over a NAT interface.
Unfortunately, I've had to stop using the bridged network as it kept
triggering system crashes,

Does bridging support IPv6? Is there any hope of getting IPv6 on
VirtualBox? If not, what about other virtualization systems that support
Windows clients?

Thanks in advance for any information.
-- 
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman@gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683