Comment 7 for bug 1540522

Hi.
This should be fixed in the latest image maas-images and in the ubuntu archive with 0.122ubuntu3
The maas image is numbered 20160210 that has the fix. https://gist.github.com/smoser/2cec72d243404a72fdb5 will show you what your maas images are:
  maas-dump-image-status my-maas-name | grep xenial
  ubuntu/xenial amd64/hwe-w 20160210 daily True

Deployment of xenial with maas will require a curtin that is >= revision 324.
  http://bazaar.launchpad.net/~curtin-dev/curtin/trunk/revision/324

You can get a trunk version of curtin from the daily ppa at https://launchpad.net/~curtin-dev/+archive/ubuntu/daily