Limit the DHCP Server to one instance.

SingleInstanceApp=1          ; Default: 0

Since V2.2.3 it is possible to limit the DHCP Server to one instance if run in application mode. If SingleInstanceApp is not configured or set to 0 then the server can be started multiple times. If set to 1 then the second instance will only show a dialog inidicating that it’s a second instance and will terminate after confirming the dialog box.