I have multiple RV340 and RV340W routers deployed with the latest firmware 1.0.03.17. It appears that if the IP address is a Static IP address (e.g. 192.168.xxx.xxx) then the Hostname does not display in the ARP table. Further, after specifically adding the host name to the "Static DHCP" table, the hostname still fails to show in the ARP table. In some cases, even dynamic DHCP hosts fail to show hostnames. Is this intended behavior? If so, can enhancements be made to display the hostname?
UPDATE - 10/08/2020 - This problem persists after firmware update to 1.0.03.20. This appears to be the same bug reported as "CSCvs59130 --- RV345P-ARP table showing incorrect 'Type' entries" . Can Cisco Support Confirm
