Does not crash anymore but have still have SSN not found (pacekt 32) especially when seglen == 0 apparently. also some dataacks give strange results in relative seq mode (packet 13 for instance)

Change-Id: If37d6bdf2688640c9a83e50986b2afe178184778
WIP: need to find a better (correct) way - accaptable upstream - to determine meta fwd and rev

Change-Id: Iece0063a0620252631c7029b50720593f7b22fab