o A tiny regression test exposes bug in rip_disconnect().

tools/regression/netinet/rawconnect/Makefile

@@ -0,0 +1,8 @@
+#
+# $FreeBSD$
+#
+
+PROG=	rawconnect
+NO_MAN=
+
+.include <bsd.prog.mk>

tools/regression/netinet/rawconnect/rawconnect.c

@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 2006 Maxim Konovalov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Bug in IP code panics the system at close(2) on
+ * connected SOCK_RAW, IPPROTO_IP socket.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <unistd.h>
+
+static void
+usage(void)
+{
+
+	fprintf(stderr, "rawconnect: no arguments\n");
+		exit(1);
+}
+
+int
+main(int argc, __unused char *argv[])
+{
+	struct sockaddr_in sin;
+	int sock;
+
+	if (argc != 1)
+		usage();
+
+	bzero(&sin, sizeof(sin));
+	sin.sin_len = sizeof(sin);
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = INADDR_LOOPBACK;
+	sin.sin_port = htons(65534);
+
+	sock = socket(PF_INET, SOCK_RAW, IPPROTO_IP);
+	if (sock == -1)
+		err(1, "socket");
+
+	if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1)
+		err(1, "connect");
+
+	close(sock);
+
+	return (0);
+}