It turns out, by the way, that many people who are using MAAS don't ever encounter this issue.
The bug occurs when MAAS-managed DHCP is managing a lease for a BMC. This is not a recommended configuration, since it makes MAAS DHCP a single point of failure for managing your machines.
I would recommend using static IP addresses for any BMCs used with MAAS.
It turns out, by the way, that many people who are using MAAS don't ever encounter this issue.
The bug occurs when MAAS-managed DHCP is managing a lease for a BMC. This is not a recommended configuration, since it makes MAAS DHCP a single point of failure for managing your machines.
I would recommend using static IP addresses for any BMCs used with MAAS.