100% CPU hogging if FritzBox 7240 / D-Link DIR-635 is present in the network
Quoting from https://github.com/intel/dleyna-server/issues/150
I just saw that gupnp-universal-cp on Ubuntu 18.04.2 also hogs the CPU while the box is on the network. Among others, gupnp-universal-cp links against libgupnp, libgssdp, libsoup, and a whole bunch of GNOME libraries, but it doesn't use dLeyna. In addition, this program also uses 100% CPU time if a D-Link DIR-635 router is present. Blocking the FRITZ!Box and the router made gupnp-universal-cp behave well again.