This patch simply clarifies some of the limitations related to
raw sends in the man page. No functional changes.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Jason Cohen <jwittlincohen@gmail.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes#8503Closes#8544