Unsolicited data PDU retry

["Tony Battersby" <tonyb@cybernetics.com>]

In section 5.2.1 Usage of Retry (draft 15), it is specified that initiators
can resend commands that have not been acknowledged for a timeout period.
Does this retry include re-sending unsolicited data PDU's?  The target is
supposed to ignore non-immediate commands with duplicate CmdSN's or CmdSN's
outside the expected range, which takes care of immediate data, but I don't
see anywhere where it is specified that the target should ignore duplicate
or unexpected unsolicited data PDUs.  Or, is the target supposed to hold on
to unsolicited data PDU's for a command that it does not know about (e.g.
because the command PDU was discarded due to a digest error) and then later
re-associate the unsolicited data PDU's with the correct command when the
command PDU is re-sent by the initiator?

The last paragraph of section 2.4.2.2 gives some rules for the ordering of
unsolicited data for different commands, which may also be related.

Thanks,
Anthony J. Battersby
Cybernetics