Comment 6 for bug 1299114

Can't reproduced this either. Using a dev instance, I ran the command Dimiter gave me and it didn't crash:
$ ./bin/maas maas networks create name=main ip=192.168.50.0 netmask=255.255.255.0 description="Main MAAS network"
{
    "description": "Main MAAS network",
    "ip": "192.168.50.0",
    "netmask": "255.255.255.0",
    "vlan_tag": null,
    "resource_uri": "/api/1.0/networks/main/",
    "name": "main"
}