iSCSI - change proposal LUN field definition on every PDU

["Julian Satran" <Julian_Satran@il.ibm.com>]

Dear colleagues,

A colleague interested in instrumentation approached me with a question 
about stateless logging of specific LU activity.
With the current iSCSI PDU formats this is not possible.
We have consistently avoided having fields that are redundant and will 
need consistency checking.
However I think we should consider including the LU field in all PDUs that 
are referencing a specific LU to simplify this type of instrumentation (as 
we did with the direction bit in the op-code).

As I am already in "count-down" mode for version 09 I would appreciate 
your comments ASAP.

Julo