Convenience hack: add description to DHCP clients

[Fry-kun]

I have some devices on my network that I don't easily recognize from the MAC and the host doesn't set client-hostname. Normally I'd have to add a static IP mapping to keep track of these. It's allowed to not specify an IP, but that doesn't map to the live devices..
Anyway, I added a patch below to system.inc to show the description next to live lease info.
It's kinda hacky but works for me :)

--- /etc/inc/system.inc	2021-02-08 04:44:12.000000000 -0800
+++ /etc/inc/system.inc	2021-07-09 22:11:17.158591000 -0700
@@ -844,6 +844,14 @@
 				continue;
 			}
 
+			// Add static description to leases
+			foreach($leases['lease'] as &$ksl) {
+				if ($ksl['mac'] == $static['mac']) {
+					$ksl['descr'] = $static['descr'];
+					break;
+				}
+			}
+
 			$slease = array();
 			$slease['ip'] = $static['ipaddr'];
 			$slease['type'] = $static_string;

Note: both the static entry & live lease info will show up in the leases table

Hope this helps someone