Changing Hostname for dynamic ip address devices

[bbergen]

New to OPNsense and loving it. Created static ip addresses for my Proxmox LXCs, NAS drives and printers and gave them "friendly" Hostnames.
Is there a way to do that with dynamic ip address devices that show up in Services>ISC DHCPv4>Leases?
Changing the Hostname on the actual devices is not possible on some of my devices.
I tried setting a static reservation with MAC address/new Hostname and leaving the IP address blank hoping that the dynamic ip address would populate the lease entry but the IP address remains blank and I end up with two entries for that device, one with the dynamic ip address/original Hostname and the one I created.
Even just adding a Description to the dynamic ip address entries would be helpful.
Any help or direction would be greatly appreciated.

[viragomann]

Presuming you're using Unbound for DNS, did you enable "Register DHCP Static Mappings" in its geneural settings?
I don't know, however, it this even works with a blank IP reservation, but it does, if you state an IP in ISC DHCP.

[bbergen]

Yes, I do have "Register DHCP Static Mappings" checked (and Applied).

[bbergen]

Yes, I do have "Register DHCP Static Mappings" checked (and Applied).

And am using Unbound

[dseven]

Probably most of us use reservations with assigned IP addresses. The only reasons I can think of not to are that it takes a little bit more effort to manage the assignment manually, or maybe shortage of IP space? I'd assume that devices you want to access by name would be on a lot of the time, so there's probably not much saving in IP space by using a dynamic address pool for them?