--- Comment #5 from Bjoern A. Zeeb <[hidden email]> ---
(In reply to Jason Mader from comment #4)
that is a totally different issue; that's using a hack badly; sorry. Classic
jails don't care about interfaces (as Jamie said) and the hack to do the
provisioning is simply calling ifconfig on start/stop. There is no "state" or
refcounting involved. In those cases I usually provision the IP aliases using
the base system configuration rather than ab-using the
jail-trying-to-be-helpful logic for this.