UPNP discover finding zero devices, sometimes still working?

:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By Bush2Tree

Hey all,

UPNP discover() isn’t finding devices. Theoretically, this means that adding port mappings shouldn’t work. But for some reason, I seem to sometimes be able to set up port mappings that work even with these errors. Any ideas as to why its not finding devices, and why it might be working anyways?