Be more precise about actions

Author: martinthomson

draft-ietf-quic-transport.md

@@ -3895,8 +3895,8 @@ packets with ACK frames.
 An endpoint that acknowledges packets they have not received might cause a
 congestion controller to permit sending at rates beyond what the network
 supports.  An endpoint MAY skip packet numbers when sending packets to detect
-this.  An endpoint can then close the connection if an unsent packet number is
-acknowledged.
+this.  An endpoint can then drop connection state and stop sending packets
+toward the misbehaving peer.
 
 
 ## Slowloris Attacks