DAD Jails IPv6 ()
There is a slight issue when it comes to IPv6 and FreeBSD jails: DAD can place a curfew on the services binding to an IPv6 address within a jail. shame
What happens is that IPv6 has something called DAD:
Duplicate Address Detection. This is
a procedure for determining if an IPv6 address is available on the local link.
The procedure has a delay of sorts. In the case of FreeBSD, it is the sysctl
net.inet6.ip6.dad_count which defaults to 1.