Serviio

2019-07-01 20:15:42,097 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:15:42,107 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:15:52,004 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:15:52,014 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:02,013 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:02,075 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:12,056 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:12,130 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:22,010 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:22,020 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out
2019-07-01 20:16:32,015 WARN [RendererManager] Error while retrieving renderer description from http://192.168.49.1:49153/description.xml: connect timed out

Note my subnet is 192.168.99.0/255.255.255,0

I am digitally confused..

this IP is an IP of one of the renderers (HW or SW). It comes as a advertisement via UPnP message, which includes the renderer's IP, Serviio then tries to fetch some metadata from there - which times out.

I think in a detailed log you could see a bit more of where these IP addresses come from.

You are going to love this, debug shows this as coming in on wan port. Added port filter to wan..

Is it not the router announcing its UPnP capabilities?