Ares-setup-device not working for me

I can use putty to connect and log into my wi-fi networked RPi3 but the ares-* commands cannot see it. In particular, ares-setup-device -s finds no devices. Any suggestions? Thanks.

Actually, I can get ares-shell (for example) to work once I have run ares-setup-device interactively to set up a device configuration. It is just "ares-setup-device -s" that does not work for some reason.

"ares-setup-device -s" looks for the devices via SSDP.
If 'upnpd' process is not running on the RPi3, it'll find nothing.
It needs to check whether webOS-OSE contains the upnpd or not.