From 42f1df1cb984c7b4c337168c4effa65fa553fda8 Mon Sep 17 00:00:00 2001
From: wollman <wollman@FreeBSD.org>
Date: Mon, 25 Aug 1997 16:29:27 +0000
Subject: ICMP Timestamp Request messages could have harbored the same sort of
 problem as Echo Requests when broad/multicast.  When multicast echo responses
 are disabled, also do the same for timestamp responses.

---
 sys/netinet/ip_icmp.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'sys/netinet/ip_icmp.c')

diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c
index e948b4b..088bf58 100644
--- a/sys/netinet/ip_icmp.c
+++ b/sys/netinet/ip_icmp.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)ip_icmp.c	8.2 (Berkeley) 1/4/94
- * $Id: ip_icmp.c,v 1.27 1997/08/02 14:32:53 bde Exp $
+ *	$Id: ip_icmp.c,v 1.28 1997/08/25 01:25:31 wollman Exp $
  */
 
 #include <sys/param.h>
@@ -384,6 +384,12 @@ icmp_input(m, hlen)
 		goto reflect;
 
 	case ICMP_TSTAMP:
+		if (!icmpbmcastecho
+		    && (m->m_flags & (M_MCAST | M_BCAST)) != 0
+		    && IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
+			icmpstat.icps_bmcasttstamp++;
+			break;
+		}
 		if (icmplen < ICMP_TSLEN) {
 			icmpstat.icps_badlen++;
 			break;
-- 
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