-Enable fast recycling of TIME_WAIT sockets.
-Enabling this option is not
-recommended since this causes problems when working
-with NAT (Network Address Translation).
+Enable fast recycling of TIME_WAIT sockets. Enabling this option is
+not recommended for devices communicating with the general Internet
+or using NAT (Network Address Translation). Since some NAT gateways
+pass through IP timestamp values, one IP can appear to have
+non-increasing timestamps. See RFC 1323 (PAWS), RFC 6191.