I can create new IP reservations, and they successfully assign the specified IP address to the MAC address I provide. So far, so good.
However, I cannot delete an IP reservation that I no longer need. The three-dot menu at the end of the row has just one item, “Delete”. When I click that, a confirmation dialog appears, with “Cancel” and “Delete” buttons. The Cancel button works as expected, but the Delete button does nothing. The confirmation dialog remains on screen and the IP reservation is not deleted.
You’re a genius! Well, you’re ahead of me anyway. I wan’t aware I had a choice, but I found that I was using port 9090/Cockpit. I connected to port 980/NethGUI and I was able to delete the reservation. Thanks for your help.
No, no special characters, the host name was “llanfairnantygof” and the IP address was 192.168.0.100. I’m afraid the MAC address is now gone because I was able to delete the reservation using NethGUI (port 980). It worked though when the host was live so I’m confident the MAC address was valid.
I’ve realized since that the IP address I reserved was outside the range that the DHCP server is configured to assign (perhaps a mistake on my part). The DHCP server is configured to assign addresses from 192.168.0.128 to 192.168.0.254 and, as I said, the reservation was 192.168.0.100.
Otherwise, this is a new implementation of NethServer, with no customizations.
Nothing apparently connected to the deletion attempt appeared in the logs at that time. All I can see is the actuall deletion when I completed it using NethGUI (port 980).
It might be worth mentioning though that the host also had another, manually assigned, fixed IP address of 192.168.0.5, with the same host name (llanfairnantygof) configured in DNS. Might this be related to my problem?