everything figured out for setting up the private vlan on both
switches. There is a wire from eth1 on the control node to a port on
the control switch. Another wire from eth2 to a port on the
experimental switch. The complication on the control switch is that we
have no serial console, and so we actually have another wire from eth3
to the control switch, so that we can dhcp and then log in and do a
switcherroo to get the private vlan configured.