No errors, some Warns 

May 29 11:26:47 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:47 mgt maas-regiond[2564]:          * ip 10.11.11.119 linked to resource juju-16749e-1 on zone maas
May 29 11:26:47 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-1
May 29 11:26:47 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:47 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:48 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.125 linked to resource juju-16749e-9 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-9
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.124 linked to resource juju-16749e-5 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-5
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.123 linked to resource juju-16749e-3 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-3
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.122 linked to resource juju-16749e-7 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-7
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.121 linked to resource juju-16749e-2 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-2
May 29 11:26:49 mgt maas-regiond[2564]:          * ip 10.11.11.120 linked to resource juju-16749e-8 on zone maas
May 29 11:26:49 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-8
May 29 11:26:50 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:52 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:26:52 mgt maas-regiond[2564]:          * ip 10.11.11.126 linked to resource juju-16749e-4 on zone maas
May 29 11:26:52 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-4
May 29 11:26:54 mgt maas-regiond[2564]:          * ip 10.11.11.127 linked to resource juju-16749e-0 on zone maas
May 29 11:26:54 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-0
May 29 11:27:08 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:27:08 mgt maas-regiond[2564]:          * ip 10.11.11.128 linked to resource juju-16749e-6 on zone maas
May 29 11:27:08 mgt maas-regiond[2564]:          * zone maas added resource juju-16749e-6
May 29 11:28:18 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:30:00 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.
May 29 11:31:44 mgt maas-regiond[2564]: maasserver.region_controller: [warn] The dynamic dns update notification '' is not valid. It will be dropped.


related to a different VMware juju Deployment 
and not sure the 
The dynamic dns update notification '' is not valid. It will be dropped.
relates too