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From: Michael Tuexen <tuexen@FreeBSD.org>
Date: Thu, 1 Jun 2017 09:14:43 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r319405 - stable/11/sys/netinet
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Author: tuexen
Date: Thu Jun  1 09:14:43 2017
New Revision: 319405
URL: https://svnweb.freebsd.org/changeset/base/319405

Log:
  MFC r317558:
  
  Set the DF bit for responses to out-of-the-blue packets.

Modified:
  stable/11/sys/netinet/sctp_output.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/netinet/sctp_output.c
==============================================================================
--- stable/11/sys/netinet/sctp_output.c	Thu Jun  1 09:00:38 2017	(r319404)
+++ stable/11/sys/netinet/sctp_output.c	Thu Jun  1 09:14:43 2017	(r319405)
@@ -11147,7 +11147,7 @@ sctp_send_resp_msg(struct sockaddr *src, struct sockad
 		ip->ip_v = IPVERSION;
 		ip->ip_hl = (sizeof(struct ip) >> 2);
 		ip->ip_tos = 0;
-		ip->ip_off = 0;
+		ip->ip_off = htons(IP_DF);
 		ip_fillid(ip);
 		ip->ip_ttl = MODULE_GLOBAL(ip_defttl);
 		if (port) {