I think this is because lp:~maas-maintainers/maas/packaging.trusty is missing r285 from lp:~maas-maintainers/maas/packaging:
285 Gavin Panella 2014-06-27 [merge] [r=blake-rouse][bug=][author=allenap] Configure authbind to permit binding all IPv6 addresses on ports 68 and 69 too.
I think this is because lp:~maas-maintainers/maas/packaging.trusty is
missing r285 from lp:~maas-maintainers/maas/packaging:
285 Gavin Panella 2014-06-27 [merge] r=blake- rouse][ bug=][author= allenap] Configure authbind to permit
[
binding all IPv6 addresses on ports 68 and 69 too.