Fix subnet usage

diff --git a/dhcpd/list_leases.cgi b/dhcpd/list_leases.cgi
index 7abd666..7c114b7 100755 (executable)
--- a/dhcpd/list_leases.cgi
+++ b/dhcpd/list_leases.cgi
@@ -104,7 +104,9 @@ else {
                                &html_escape($subnet->{'comment'}),
                                $subnet->{'ips'},
                                $used,
-                               int(100*$used / $subnet->{'ips'})."%",
+                               $subnet->{'ips'} ?
+                                       int(100*$used / $subnet->{'ips'})."%" :
+                                       "",
                                ]);
                        }
                print &ui_columns_end();