From owner-svn-src-projects@FreeBSD.ORG  Tue Aug  3 15:53:30 2010
Return-Path: <owner-svn-src-projects@FreeBSD.ORG>
Delivered-To: svn-src-projects@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5CA5F1065670;
	Tue,  3 Aug 2010 15:53:30 +0000 (UTC)
	(envelope-from attilio@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 4BEAC8FC14;
	Tue,  3 Aug 2010 15:53:30 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o73FrUY4089827;
	Tue, 3 Aug 2010 15:53:30 GMT (envelope-from attilio@svn.freebsd.org)
Received: (from attilio@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o73FrUim089825;
	Tue, 3 Aug 2010 15:53:30 GMT (envelope-from attilio@svn.freebsd.org)
Message-Id: <201008031553.o73FrUim089825@svn.freebsd.org>
From: Attilio Rao <attilio@FreeBSD.org>
Date: Tue, 3 Aug 2010 15:53:30 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-projects@freebsd.org
X-SVN-Group: projects
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r210806 - projects/sv/sys/net
X-BeenThere: svn-src-projects@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the src &quot; projects&quot;
	tree" <svn-src-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-projects>, 
	<mailto:svn-src-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-projects>
List-Post: <mailto:svn-src-projects@freebsd.org>
List-Help: <mailto:svn-src-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-projects>, 
	<mailto:svn-src-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 03 Aug 2010 15:53:30 -0000

Author: attilio
Date: Tue Aug  3 15:53:29 2010
New Revision: 210806
URL: http://svn.freebsd.org/changeset/base/210806

Log:
  Add some debugging aid and confirm revision does the same thing
  as above-mentioned functions

Modified:
  projects/sv/sys/net/netdump_client.c

Modified: projects/sv/sys/net/netdump_client.c
==============================================================================
--- projects/sv/sys/net/netdump_client.c	Tue Aug  3 15:40:42 2010	(r210805)
+++ projects/sv/sys/net/netdump_client.c	Tue Aug  3 15:53:29 2010	(r210806)
@@ -762,6 +762,15 @@ nd_handle_ip(struct mbuf **mb)
 		ip = mtod(m, struct ip *);
 	}
 
+#ifdef INVARIANTS
+	if (((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
+	    (ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) &&
+	    (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) {
+		NETDDEBUG("nd_handle_ip: Bad IP header (RFC1122)\n");
+		return;
+	}
+#endif
+
 	/* Checksum */
 	if (m->m_pkthdr.csum_flags & CSUM_IP_CHECKED) {
 		if (!(m->m_pkthdr.csum_flags & CSUM_IP_VALID)) {