Stupid port ranges! Make per experiment range larger.
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?