DLPX-25998 TCP congestion control is inadequate
Reviewed at: http://reviews.delphix.com/r/34808/

*** 398,407 ****
--- 398,410 ----
               -p,--prop
                       Specify the property name and value(s).  The optional +|-
                       syntax can be used to add/remove values from the current
                       list of values on the property.  The property name can be
                       one of the following:
+                      congestion_control     The default congestion-control
+                                             algorithm to be used for new
+                                             connections (TCP).
                       ecn                    Explicit congestion control
                                              (never/passive/active) (TCP).
                       extra_priv_ports       Additional privileged ports
                                              (SCTP/TCP/UDP).
                       forwarding             Packet forwarding (on/off).