Populate NetBox inventory via active discovery

[mmguero]

@mmguero cloned issue idaholab/Malcolm#136 on 2022-12-07:

Feature-tracking issue dependent on #131

[mmguero]

@mmguero commented on 2023-01-09:

Things to look at:

• mDNS

• uPnP

• ping

• snmp

• arp broadcasts

• nmap-style port scanning

• CDP (cisco discovery protocol)

• Link Layer Discovery Protocol (LLDP)

• SCTP INIT packets

• netmiko

• IX-DiscoveryTools

• netbox-agent (though I don't think we want to do agent-based)

Some resources

• GitHub topics/host-discovery

[mmguero]

@mmguero commented on 2023-05-16:

As part of our collaboration with BSI-Bund (www.bsi.bund.de, github org) with work being worked on by Fraunhofer IOSB, they are going to be taking over this development of this feature. Marking as external, will update this issue as their work continues.

[mmguero]

@mmguero commented on 2023-10-26:

Another thing to look into: https://github.com/dainok/netdoc