Log Message:
net/libnpupnp: import libnpupnp-4.1.5

npupnp is an UPnP library derived from the venerable pupnp, based
on its 1.6.x branch (around 1.6.25).

Main modifications:

 - Support multiple network interfaces
 - Support multiple root devices (already in the late pupnp versions).
 - Use libcurl for HTTP client functions.