I actually bought a UA subscription to use the private PPA to shoehorn a raspbian image into MAAS to get around the cooling issue, but to date no ubuntu rep has given me access to the private PPA that enables the maas-image-builder so I am left dismantling raspbians exec on what exactly is being done to init the new PoE hat. It is interesting the complexity of the newer PoE+ model, it even has a ready indicator to tell you that it is active.