Every client and/or project should have a detailed equipment table where Serial Numbers, MAC addresses, IP addresses, firmware versions, etc. can be documented for the equipment.
These tables would be searchable so that, for example, a recall or critical firmware update is released that applies to specific serial numbers, all equipment could be quickly searched to determine which customers and equipment is affected.
Being able to document additional information (the table should allow for custom columns), such as IP addresses, allows for quicker and easier servicing and troubleshooting.