TEARDOWN is 100% normal. It just means "close the connection".There is a "Destination unreachable (Port unreachable)"
and then "TEARDOWN" which does not sound good ;-)
The "destination unreachable" is also normal for a SAT>IP tuner.
Please give me a week or so to provide a new patch (hint to Kay: OPTIONS keep-alive! ). I'm working on it as fast as I can, but work this week is really busy so I don't have as much time to do MediaPortal code as normal.