IPV6 and disabling DAD

[krad]

To cut a long story short, I have a virtualized environment (vbox ontop of
solaris11) with a couple of freebsd vms. The ipv6 address assignment keeps
failing due to duplicated addresses. From what I can see this is basically
due to multicast frames being looped back to the guest OS. In my simplistic
mind i should just disable dad and do it all manually. I cant find how to
do this though. I know this isnt a bsd thing as the linux guests have the
same issue.

kernel: Cannot enable an interface with a link-local address marked
duplicate.

kernel: mplex: DAD detected duplicate IPv6 address
fe80:4::a00:27ff:fe99:3372: NS in/out=5/1, NA in=0
carrera kernel: mplex: DAD complete for fe80:4::a00:27ff:fe99:3372 -
duplicate found