I am looking to enable transport mode on a gateway device to improve throughput on a slow link.  I understand that this is not what is intended in the RFCs, but was hoping that it would be supported regardless.

Currently simply turning transport mode on will cause any traffic /originating/ from the gateway device to be in transport mode, but all traffic that the gateway would normally route gets dropped.

Has anyone else tried this, or have any thoughts on its feasability?