On my test box (Edge) I noticed in the log files quite a bit of scanning of IP addresses on the known UPnP ports. Which I consider odd as I have the Automatic Device Detection turned off in the Net & Wi-fi settings. Quite a lot of lines like this
01 11/22/19 12:05:07.762 FileUtils::ReadURL 0/resp:400 user: pass: size 100 http://192.168.178.28:1400/xml/device_description.xml//xml/AlarmClock1.xml response: <HTML><HEAD><TITLE>Error 400</TITLE></HEAD><BODY><H1>Error 400</H1><P>Bad Request</P></BODY></HTML> <0x739ab520> 01 11/22/19 12:05:07.763 JobHandler_LuaUPnP::ConfirmUpnpFile can't retrieve http://192.168.178.28:1400/xml/device_description.xml//xml/AlarmClock1.xml basefile AlarmClock1.xml <0x739ab520>
I looked at the user_data and noticed that the flag UpnpScanning is set to “1”. I turn that to 0
luup.attr_set("UpnpScanning", 0, 0)
Rebooted the box and now scanning indeed did stop.
I never noticed this scanning with the Automatic Device Detection turned off and my Lite (on 7.28) does not do this, but also does not have the UpnpScanning flag in the user_data at all.
I also looked at my Plus (7.30 beta) and noticed a second flag EnableUPnP. This and the UpnpScanning flag are both zero as expected.
So, not sure if it is Edge or 7.30 specific. Anyhow, another way to reduce network chatter by the Vera.