Can you provide the first 3 octets of one of the bad MACs? If you're not sure which one, the following is sure to catch it:
sudo maas-region dbshell select distinct substring(cast(mac_address as varchar) for 8) from maasserver_interface;
This would appear to be a bug in the python3-netaddr, which MAAS should probably armor itself against.
Can you provide the first 3 octets of one of the bad MACs? If you're not sure which one, the following is sure to catch it:
sudo maas-region dbshell cast(mac_ address as varchar) for 8) from maasserver_ interface;
select distinct substring(
This would appear to be a bug in the python3-netaddr, which MAAS should probably armor itself against.