ipaccess: close connection if we receive bad messages from BTS
ipaccess: close connection if we receive bad messages from BTS

If we receive bad messages from the BTS, we close the connection.
I think this is a more robust behaviour.

osmobuntu/libosmo-abis,telenoobie/libosmo-abis,osmobuntu/libosmo-abis,telenoobie/libosmo-abis,osmobuntu/libosmo-abis,osmocom/libosmo-abis,osmobuntu/libosmo-abis,osmocom/libosmo-abis,osmocom/libosmo-abis