DHCP Lease expiry????

Question

Hello, 
 I am using the home version of the UTM for home use, so 50 IPs should be plenty. 
 I have recently been having a lot of problems with error messages for using too many IPs. 
 I have read through the various posts which legitimately complain why there isn't an easier way to manage DHCP leases via the GUI as well as the suggested work arounds. 
 I shutdown and restarted my two DHCP servers (LAN and guest wireless), and can see that my DHCP lease table now only shows 24 IPs used. AND YET, I continue to get the warning messages that 64 IPs are being used and that I am over the allowed limit. I have 5-10 devices with fixed IP, but that's it. I have had a broadly similar configuration for over 10 years and the 50 IP limit has never been an issue. 
 Can someone please explain what is going on and why the UTM thinks I am using 64 IPs when the lease table shows 24? How can I get rid of old expired IP addresses more quickly? 
 Thank you!

rfcat_vk · Accepted Answer

Hi, 
 your DHCP servers will not show you all your allocated IP addresses. Some of the addresses might have been picked up sometime ago and aged off the dhcp server. 
 Check you IP count under the management -> licencing - active IP page. 
 I currently have 27 active addresses, trouble is I don't have that many devices. The other thing to watch out for is the IP address allocation for things like APs etc.