miniupnpc may be used for UPnP port mapping. It can be downloaded from
http://miniupnp.tuxfamily.org/files/. UPnP support is compiled in and
turned off by default. Set USE_UPNP to a different value to control this:
- USE_UPNP= No UPnP support - miniupnp not required
+ USE_UPNP=- No UPnP support - miniupnp not required
USE_UPNP=0 (the default) UPnP support turned off by default at runtime
USE_UPNP=1 UPnP support turned on by default at runtime