Comment 1 for bug 1632862

A couple thoughts on this:

 - We don't currently have an RPC call to get scan status from the rack, so we don't have a way to know a scan is in progress. So we haven't implemented the "Scanning" spinner that was in the design yet.

 - The scan may appear not to do anything, if the subnet is large and only 'ping' is installed. (Perhaps we should require nmap to be installed if you want to scan a subnet over a certain size; I'm scanning a /16 right now and it's taking a very long time.)