Network identity shows broadcast address instead of the network's address

1. Log into MAAS
2. Click the gear
3. Under Cluster Controllers, click the edit icon next to Cluster master
4. Create a new network, e.g.
- Network Interface = em1
- IP = 10.0.0.1
- Subnet mask = 255.255.255.0
- Broadcast IP = 10.0.0.255
- Router IP = 10.0.0.1
- IP range low = 10.0.0.11
- IP range high = 10.0.0.21
- Foreign DHCP ID = <blank>
5. Save Interface

Observed behavior
The "Edit Cluster Controller" page will show the newly-configured interface "Network" name of 10.0.0.255/24.

Expected behavior
10.0.0.255 is not a valid network identifier - that's the network's broadcast address. The valid identifier of the network would be 10.0.0.0/24.