I believe I've done this to someone once (got into their "non portforwarded" server) and had this done to me once (by jacob when I was playing a custom MP map to test it).
No idea what causes this, it's really rare, but it's almost like a way to not deal with portforwarding anymore.
I believe I've done this to someone once (got into their "non portforwarded" server) and had this done to me once (by jacob when I was playing a custom MP map to test it). No idea what causes this, it's really rare, but it's almost like a way to not deal with portforwarding anymore.