We need to get rid of this!

Since BSD jail days we have attempted to partition up the UDP/TCP port
range among vnodes as jails and their host shared the same namespace.
Originally we supported a range of 256 per experiment which wound up
limiting the number of experiments we could instantiate. In order to get
a class up and running where we expected a large number of single-vnode
experiments, I reduced the range to 32 to allow more experiments, forgetting
that we pick a unique port per-vnode from that range to use for sshd.
So as a result I limited the number of vnodes per experiment to 32!

Did I mention that we need to eviscerate this mechanism with extreme
prejudice?