Phil Schaffer
Occasional Visitor
"New Device" is a description, not a hostname. To change the description, you have to go through the Network Client List, not through the DHCP page.
I was able to change all my other DHCP reservation "Description"s through the DHCP page by clicking on the icon and then editing the Name field. This then shows up as the description rather than the host name. Please see the attached screen clip. I do see how you can change these through the network client list, but here too, changes I make are not applied to the DHCP reservation descriptions and for some entries, nothing happens when I click on the icon.