Comment 4 for bug 1793564

From the MAAS perspective, it is completely possible that:

1. A single interface has 2 IP addresses.
2. Multiple interfaces have 2 IP addresses in the same subnet/network.

My guess of what's happening here is really (1). This would present itself (automatically) if for example, a machine would DHCP from MAAS' dynamic range, and while having a lease for that IP, the machine would be assigned another IP address (e.g. an statically assigned IP). Since MAAS keeps tracks of both, it would track both interfaces.

My guess in this case, is that it got into a situation in which MAAS is tracking 2 interfaces for the same interface, one of which is a dynamic IP and another one is a static IP. The dynamic IP should disappear from MAAS automatically once the lease for that expires.