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From: Michael Tuexen <tuexen@FreeBSD.org>
Date: Thu, 14 Sep 2017 18:50:40 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r323596 - head/usr.sbin/tcpdrop
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Author: tuexen
Date: Thu Sep 14 18:50:40 2017
New Revision: 323596
URL: https://svnweb.freebsd.org/changeset/base/323596

Log:
  Add a description how tcpdrop handles the case of specifying the
  -s and the -S option.
  
  Sponsored by:		Netflix, Inc.

Modified:
  head/usr.sbin/tcpdrop/tcpdrop.8

Modified: head/usr.sbin/tcpdrop/tcpdrop.8
==============================================================================
--- head/usr.sbin/tcpdrop/tcpdrop.8	Thu Sep 14 18:07:30 2017	(r323595)
+++ head/usr.sbin/tcpdrop/tcpdrop.8	Thu Sep 14 18:50:40 2017	(r323596)
@@ -78,6 +78,26 @@ is one of
 .Dv FIN_WAIT_2 , or
 .Dv TIME_WAIT .
 .Pp
+If
+.Fl S Ar stack
+and
+.Fl s Ar state
+are specified,
+.Nm
+will attempt to drop all TCP connections being in the state
+.Ar state
+and using the TCP stack
+.Ar stack .
+Since TCP connections in the 
+.Dv TIME_WAIT
+state are not tied to any TCP stack, using the option
+.Fl s Dv TIME_WAIT
+in combination with the
+.Fl S Ar stack
+option results in
+.Nm
+not dropping any TCP connection.
+.Pp
 The
 .Fl l
 flag may be given in addition to the