add ping6(8), IPv6 ping.

XXX may be merged into ping(8)?
XXX NRL getaddrinfo(3) does not allow SOCK_RAW as ai_socktype.
quickhack is enabled by -DNRL_GETADDRINFO.

6 files changed, 1935 insertions, 2 deletions

diff --git a/distrib/sets/lists/base/mi b/distrib/sets/lists/base/mi
index 51300846e56..774e52e80a4 100644
--- a/distrib/sets/lists/base/mi
+++ b/distrib/sets/lists/base/mi
@@ -2670,3 +2670,4 @@
 ./usr/sbin/rtsold
 ./sbin/rtsol
 ./usr.sbin/ndp
+./sbin/ping6
diff --git a/distrib/sets/lists/man/mi b/distrib/sets/lists/man/mi
index c7728bdd819..48c168b8d6b 100644
--- a/distrib/sets/lists/man/mi
+++ b/distrib/sets/lists/man/mi
@@ -1628,3 +1628,4 @@
 ./usr/share/man/cat3/inet6_rthdr_segments.0
 ./usr/share/man/cat3/inet6_rthdr_getaddr.0
 ./usr/share/man/cat3/inet6_rthdr_getflags.0
+./usr/share/man/cat8/ping6.0
diff --git a/sbin/Makefile b/sbin/Makefile
index 57618574144..3502ca7d6a2 100644
--- a/sbin/Makefile
+++ b/sbin/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.47 1999/12/09 15:18:14 itojun Exp $
+#	$OpenBSD: Makefile,v 1.48 1999/12/11 08:43:19 itojun Exp $
 
 # Not ported: XNSrouted enpload scsiformat startslip
 # Missing: icheck
@@ -27,7 +27,7 @@ SUBDIR+= mount_ext2fs fsck_ext2fs
 SUBDIR+= mount_xfs
 
 # IPv6
-SUBDIR+= rtsol
+SUBDIR+= ping6 rtsol
 
 .if   make(clean) || make(cleandir) || make(obj)
 SUBDIR+= bim edlabel fdisk wicontrol
diff --git a/sbin/ping6/Makefile b/sbin/ping6/Makefile
new file mode 100644
index 00000000000..5606a8789db
--- /dev/null
+++ b/sbin/ping6/Makefile
@@ -0,0 +1,17 @@
+#	$OpenBSD: Makefile,v 1.1 1999/12/11 08:43:19 itojun Exp $
+
+PROG=	ping6
+MAN=	ping6.8
+
+CPPFLAGS+= -DINET6
+
+BINOWN=	root
+BINGRP=	bin
+BINMODE=4555
+
+CPPFLAGS+=-DNRL_GETADDRINFO
+
+# kame scopeid hack
+#CPPFLAGS+=-DKAME_SCOPEID
+
+.include <bsd.prog.mk>
diff --git a/sbin/ping6/ping6.8 b/sbin/ping6/ping6.8
new file mode 100644
index 00000000000..ca88ad662d3
--- /dev/null
+++ b/sbin/ping6/ping6.8
@@ -0,0 +1,341 @@
+.\"	$OpenBSD: ping6.8,v 1.1 1999/12/11 08:43:19 itojun Exp $
+.\" 
+.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+.\" 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.
+.\" 3. Neither the name of the project nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\" 
+.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
+.\"
+.\"     KAME Id: ping6.8,v 1.5 1999/12/01 12:51:04 jinmei Exp
+.\"
+.Dd May 17, 1998
+.Dt PING6 8
+.Os
+.Sh NAME
+.Nm ping6
+.Nd send
+.Tn ICMPv6 ECHO_REQUEST
+packets to network hosts
+.Sh SYNOPSIS
+.Nm
+.Op Fl AdEfnqRrvw
+.Op Fl a Ar addrtype
+.Op Fl b Ar bufsiz
+.Op Fl c Ar count
+.Op Fl h Ar hoplimit
+.Op Fl I Ar interface
+.Op Fl i Ar wait
+.Op Fl l Ar preload
+.Op Fl p Ar pattern
+.Op Fl S Ar sourceaddr
+.Op Fl s Ar packetsize
+.Ar host
+.Sh DESCRIPTION
+.Bl -tag -width Ds
+.It Fl A
+Enables transport-mode IPsec authentication header. (experimental)
+.It Fl a Ar addrtype
+Generate ICMPv6 Node Information Node Addresses query, rather than echo-request.
+.Ar addrtype
+must be a string constructed of the following charaters.
+.Bl -tag -width Ds -compact
+.It Ic a
+requires all the responder's unicast addresses. If the charater is ommited,
+only those addresses which belong to the interface which has the
+responder's address are required.
+.It Ic g
+requires responder's global-scope addresses.
+.It Ic s
+requires responder's site-local addresses.
+.It Ic l
+requires responder's link-local addresses.
+.It Ic A
+requires responder's anycast addresses. Without this character, the responder
+will return unicast addresses only. With this character, the responder
+will return anycast addresses only.
+Note that the specification does not specify how to get responder's
+anycast addresses. This is an experimental option.
+.El
+.It Fl b Ar bufsiz
+Set socket buffer size.
+.It Fl c Ar count
+Stop after sending
+.Pq and receiving
+.Ar count
+.Tn ECHO_RESPONSE
+packets.
+.It Fl d
+Set the
+.Dv SO_DEBUG
+option on the socket being used.
+.It Fl E
+Enables transport-mode IPsec encapsulated security payload. (experimental)
+.It Fl f
+Flood ping.
+Outputs packets as fast as they come back or one hundred times per second,
+whichever is more.
+For every
+.Tn ECHO_REQUEST
+sent a period 
+.Dq \&.
+is printed, while for every
+.Tn ECHO_REPLY
+received a backspace is printed.
+This provides a rapid display of how many packets are being dropped.
+Only the super-user may use this option.
+.Bf -emphasis
+This can be very hard on a network and should be used with caution.
+.Ef
+.It Fl h Ar hoplimit
+Set the IPv6 hoplimit.
+.It Fl I Ar interface
+Source packets with the given interface address.
+This flag applies if the ping destination is a multicast address,
+or link-local/site-local unicast address.
+.It Fl i Ar wait
+Wait
+.Ar wait
+seconds
+.Em between sending each packet .
+The default is to wait for one second between each packet.
+This option is incompatible with the
+.Fl f
+option.
+.It Fl l Ar preload
+If
+.Ar preload
+is specified,
+.Nm ping
+sends that many packets as fast as possible before falling into its normal
+mode of behavior.
+Only the super-user may use this option.
+.It Fl n
+Numeric output only.
+No attempt will be made to lookup symbolic names for host addresses.
+.It Fl p Ar pattern
+You may specify up to 16
+.Dq pad
+bytes to fill out the packet you send.
+This is useful for diagnosing data-dependent problems in a network.
+For example,
+.Dq Li \-p ff
+will cause the sent packet to be filled with all
+ones.
+.Fl Q
+flag, 
+.Nm
+prints out any ICMP error messages caused by its own ECHO_REQUEST
+messages.
+.It Fl q
+Quiet output.
+Nothing is displayed except the summary lines at startup time and
+when finished.
+.It Fl R
+Record route.
+Includes the
+.Tn RECORD_ROUTE
+option in the
+.Tn ECHO_REQUEST
+packet and displays
+the route buffer on returned packets.
+Note that the IP header is only large enough for nine such routes;
+the
+.Xr traceroute 8
+command is usually better at determining the route packets take to a
+particular destination.
+Many hosts ignore or discard the
+.Tn RECORD_ROUTE
+option.
+.It Fl r
+Bypass the normal routing tables and send directly to a host on an attached
+network.
+If the host is not on a directly-attached network, an error is returned.
+This option can be used to ping a local host through an interface
+that has no route through it 
+.Po
+e.g., after the interface was dropped by
+.Xr routed 8
+.Pc .
+.It Fl S Ar sourceaddr
+Specifies the source address of request packets.
+The source address must be one of the unicast addresses of the sending
+node.
+If the outgoing interface is specified by the
+.Fl I
+option as well, the address must be assinged to the specified interface.
+.It Fl s Ar packetsize
+Specifies the number of data bytes to be sent.  
+The default is 56, which translates into 64
+.Tn ICMP
+data bytes when combined
+with the 8 bytes of
+.Tn ICMP
+header data.
+You may need to specify
+.Fl b
+as well to extend socket buffer size.
+.It Fl v
+Verbose output.
+.Tn ICMP
+packets other than
+.Tn ECHO_RESPONSE
+that are received are listed.
+.It Fl w
+Generate ICMPv6 Node Information FQDN query, rather than echo-request.
+.Fl s
+has no effect if
+.Fl w
+is specified.
+.It Fl W
+Same as
+.Fl w .
+This option was remained for backward compatibility.
+.Fl s
+has no effect if
+.Fl w
+is specified.
+.El
+.Pp
+When using
+.Nm
+for fault isolation, it should first be run on the local host, to verify
+that the local network interface is up and running.
+Then, hosts and gateways further and further away should be 
+.Dq pinged .
+Round-trip times and packet loss statistics are computed.
+If duplicate packets are received, they are not included in the packet
+loss calculation, although the round trip time of these packets is used
+in calculating the round-trip time statistics.
+When the specified number of packets have been sent
+.Pq and received
+or if the program is terminated with a
+.Dv SIGINT ,
+a brief summary is displayed, showing the number of packets sent and
+received, and the minimum, maximum, mean, and standard deviation of
+the round-trip times.
+.Pp
+This program is intended for use in network testing, measurement and
+management.
+Because of the load it can impose on the network, it is unwise to use
+.Nm
+during normal operations or from automated scripts.
+.\" .Sh ICMP PACKET DETAILS
+.\" An IP header without options is 20 bytes.
+.\" An
+.\" .Tn ICMP
+.\" .Tn ECHO_REQUEST
+.\" packet contains an additional 8 bytes worth of
+.\" .Tn ICMP
+.\" header followed by an arbitrary amount of data.
+.\" When a
+.\" .Ar packetsize
+.\" is given, this indicated the size of this extra piece of data
+.\" .Pq the default is 56 .
+.\" Thus the amount of data received inside of an IP packet of type
+.\" .Tn ICMP
+.\" .Tn ECHO_REPLY
+.\" will always be 8 bytes more than the requested data space
+.\" .Pq the Tn ICMP header .
+.\" .Pp
+.\" If the data space is at least eight bytes large,
+.\" .Nm
+.\" uses the first eight bytes of this space to include a timestamp which
+.\" it uses in the computation of round trip times.
+.\" If less than eight bytes of pad are specified, no round trip times are
+.\" given.
+.Sh DUPLICATE AND DAMAGED PACKETS
+.Nm Ping6
+will report duplicate and damaged packets.
+Duplicate packets should never occur when pinging a unicast address,
+and seem to be caused by
+inappropriate link-level retransmissions.
+Duplicates may occur in many situations and are rarely
+.Pq if ever
+a good sign, although the presence of low levels of duplicates may not
+always be cause for alarm.
+Duplicates are expected when pinging a broadcast or multicast address,
+since they are not really duplicates but replies from different hosts
+to the same request.
+.Pp
+Damaged packets are obviously serious cause for alarm and often
+indicate broken hardware somewhere in the
+.Nm ping
+packet's path
+.Pq in the network or in the hosts .
+.Sh TRYING DIFFERENT DATA PATTERNS
+The
+(inter)network
+layer should never treat packets differently depending on the data
+contained in the data portion.
+Unfortunately, data-dependent problems have been known to sneak into
+networks and remain undetected for long periods of time.
+In many cases the particular pattern that will have problems is something
+that does not have sufficient
+.Dq transitions ,
+such as all ones or all zeros, or a pattern right at the edge, such as
+almost all zeros.
+It is not
+necessarily enough to specify a data pattern of all zeros (for example)
+on the command line because the pattern that is of interest is
+at the data link level, and the relationship between what you type and
+what the controllers transmit can be complicated.
+.Pp
+This means that if you have a data-dependent problem you will probably
+have to do a lot of testing to find it.
+If you are lucky, you may manage to find a file that either
+cannot
+be sent across your network or that takes much longer to transfer than
+other similar length files.
+You can then examine this file for repeated patterns that you can test
+using the
+.Fl p
+option of
+.Nm Ns .
+.Sh RETURN VALUES
+The
+.Nm
+command returns an exit status of zero if at least one response was
+heard from the specified
+.Ar host ;
+a status of two if the transmission was successful but no responses
+were received; or another value
+.Pq from Aq Pa sysexits.h
+if an error occurred.
+.Sh SEE ALSO
+.Xr netstat 1 ,
+.Xr ifconfig 8 ,
+.Xr routed 8 ,
+.Xr ping 8 ,
+.Xr traceroute 8 ,
+.Xr traceroute6 8
+.Sh HISTORY
+The
+.Nm ping
+command appeared in
+.Bx 4.3 .
+.Nm Ping6
+command with IPv6 support first appeared in WIDE Hydrangea IPv6 protocol stack
+kit.
+.\" .Sh BUGS
+.\" (to be written)
diff --git a/sbin/ping6/ping6.c b/sbin/ping6/ping6.c
new file mode 100644
index 00000000000..1e01de66857
--- /dev/null
+++ b/sbin/ping6/ping6.c
@@ -0,0 +1,1573 @@
+/*	$OpenBSD: ping6.c,v 1.1 1999/12/11 08:43:19 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * 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.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
+ */
+
+/*	BSDI	ping.c,v 2.3 1996/01/21 17:56:50 jch Exp	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Muuss.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)ping.c	8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+
+/*
+ * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
+ * measure round-trip-delays and packet loss across network paths.
+ *
+ * Author -
+ *	Mike Muuss
+ *	U. S. Army Ballistic Research Laboratory
+ *	December, 1983
+ *
+ * Status -
+ *	Public Domain.  Distribution Unlimited.
+ * Bugs -
+ *	More statistics could always be gathered.
+ *	This program has to run SUID to ROOT to access the ICMP socket.
+ */
+/*
+ * NOTE:
+ * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
+ * as IPV6_PKTINFO.  Some objects it (sin6_scope_id specifies *link* while
+ * IPV6_PKTINFO specifies *interface*.  Link is defined as collection of
+ * network attached to 1 or more interfaces)
+ */
+
+#include <sys/param.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <net/if.h>
+#include <net/route.h>
+
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/ip6.h>
+#include <netinet/icmp6.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef IPSEC
+#include <netinet6/ah.h>
+#include <netinet6/ipsec.h>
+#endif
+
+#define MAXPACKETLEN	131072
+#define	IP6LEN		40
+#define ICMP6ECHOLEN	8	/* icmp echo header len excluding time */
+#define ICMP6ECHOTMLEN sizeof(struct timeval)
+#define ICMP6_NIQLEN	(ICMP6ECHOLEN + 8)
+#define ICMP6_NIRLEN	(ICMP6ECHOLEN + 12) /* 64 bits of nonce + 32 bits ttl */
+#define	EXTRA		256	/* for AH and various other headers. weird. */
+#define	DEFDATALEN	ICMP6ECHOTMLEN
+#define MAXDATALEN	MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
+#define	NROUTES		9		/* number of record route slots */
+
+#define	A(bit)		rcvd_tbl[(bit)>>3]	/* identify byte in array */
+#define	B(bit)		(1 << ((bit) & 0x07))	/* identify bit in byte */
+#define	SET(bit)	(A(bit) |= B(bit))
+#define	CLR(bit)	(A(bit) &= (~B(bit)))
+#define	TST(bit)	(A(bit) & B(bit))
+
+#define	F_FLOOD		0x0001
+#define	F_INTERVAL	0x0002
+#define	F_NUMERIC	0x0004
+#define	F_PINGFILLED	0x0008
+#define	F_QUIET		0x0010
+#define	F_RROUTE	0x0020
+#define	F_SO_DEBUG	0x0040
+#define	F_VERBOSE	0x0100
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+#define	F_POLICY	0x0400
+#else
+#define F_AUTHHDR	0x0200
+#define F_ENCRYPT	0x0400
+#endif /*IPSEC_POLICY_IPSEC*/
+#endif /*IPSEC*/
+#define F_NODEADDR	0x0800
+#define F_FQDN		0x1000
+#define F_INTERFACE	0x2000
+#define F_SRCADDR	0x4000
+u_int options;
+
+#define IN6LEN		sizeof(struct in6_addr)
+#define SA6LEN		sizeof(struct sockaddr_in6)
+#define DUMMY_PORT      10101
+
+#define SIN6(s) ((struct sockaddr_in6 *)(s))
+
+/*
+ * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
+ * number of received sequence numbers we can keep track of.  Change 128
+ * to 8192 for complete accuracy...
+ */
+#define	MAX_DUP_CHK	(8 * 8192)
+int mx_dup_ck = MAX_DUP_CHK;
+char rcvd_tbl[MAX_DUP_CHK / 8];
+
+struct addrinfo *res;	        
+struct sockaddr_in6 dst;        /* who to ping6 */
+struct sockaddr_in6 src;        /* src addr of this packet */
+int datalen = DEFDATALEN;
+int s;				/* socket file descriptor */
+u_char outpack[MAXPACKETLEN];
+char BSPACE = '\b';		/* characters written for flood */
+char DOT = '.';
+char *hostname;
+int ident;			/* process id to identify our packets */
+struct in6_addr srcaddr;
+
+/* counters */
+long npackets;			/* max packets to transmit */
+long nreceived;			/* # of packets we got back */
+long nrepeats;			/* number of duplicates */
+long ntransmitted;		/* sequence # for outbound packets = #sent */
+int interval = 1;		/* interval between packets */
+int hoplimit = -1;		/* hoplimit */
+
+/* timing */
+int timing;			/* flag to do timing */
+double tmin = 999999999.0;	/* minimum round trip time */
+double tmax = 0.0;		/* maximum round trip time */
+double tsum = 0.0;		/* sum of all times, for doing average */
+
+/* for inet_ntop() */
+char ntop_buf[INET6_ADDRSTRLEN];
+
+/* for node addresses */
+u_short naflags;
+
+/* for ancillary data(advanced API) */
+struct msghdr smsghdr;
+struct iovec smsgiov;
+char *scmsg = 0;
+
+int	 main __P((int, char *[]));
+void	 fill __P((char *, char *));
+int	 get_hoplim __P((struct msghdr *));
+void	 onalrm __P((int));
+void	 oninfo __P((int));
+void	 onint __P((int));
+void	 pinger __P((void));
+char	*pr_addr __P((struct sockaddr_in6 *));
+void	 pr_icmph __P((struct icmp6_hdr *, u_char *));
+void	 pr_iph __P((struct ip6_hdr *));
+void	 pr_nodeaddr __P((struct icmp6_nodeinfo *, int));
+void	 pr_pack __P((u_char *, int, struct msghdr *));
+void	 pr_retip __P((struct ip6_hdr *, u_char *));
+void	 summary __P((void));
+void	 tvsub __P((struct timeval *, struct timeval *));
+int	 setpolicy __P((int, char *));
+void	 usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern int errno, optind;
+	extern char *optarg;
+	struct itimerval itimer;
+	struct sockaddr_in6 from;
+	struct timeval timeout;
+	struct addrinfo hints;
+	fd_set fdset;
+	register int cc, i;
+	int ch, fromlen, hold, packlen, preload, optval, ret_ga;
+	u_char *datap, *packet;
+	char *e, *target, *ifname = NULL;
+	int ip6optlen = 0;
+	struct cmsghdr *scmsgp = NULL;
+	int sockbufsize = 0;
+	int usepktinfo = 0;
+	struct in6_pktinfo *pktinfo = NULL;
+#ifdef IPSEC_POLICY_IPSEC
+	char *policy_in = NULL;
+	char *policy_out = NULL;
+#endif
+
+	/* just to be sure */
+	memset(&smsghdr, 0, sizeof(&smsghdr));
+	memset(&smsgiov, 0, sizeof(&smsgiov));
+
+	preload = 0;
+	datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
+#ifndef IPSEC
+	while ((ch = getopt(argc, argv, "a:b:c:dfh:I:i:l:np:qRrS:s:vwW")) != EOF)
+#else
+#ifdef IPSEC_POLICY_IPSEC
+	while ((ch = getopt(argc, argv, "a:b:c:dfh:I:i:l:np:qRrS:s:vwWP:")) != EOF)
+#else
+	while ((ch = getopt(argc, argv, "a:b:c:dfh:I:i:l:np:qRrS:s:vwWAE")) != EOF)
+#endif /*IPSEC_POLICY_IPSEC*/
+#endif
+		switch(ch) {
+		 case 'a':
+		 {
+			 char *cp;
+
+			 options |= F_NODEADDR;
+			 datalen = 2048; /* XXX: enough? */
+			 for (cp = optarg; *cp != '\0'; cp++) {
+				 switch(*cp) {
+				 case 'a':
+					 naflags |= NI_NODEADDR_FLAG_ALL;
+					 break;
+				 case 'l':
+				 case 'L':
+					 naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
+					 break;
+				 case 's':
+				 case 'S':
+					 naflags |= NI_NODEADDR_FLAG_SITELOCAL;
+					 break;
+				 case 'g':
+				 case 'G':
+					 naflags |= NI_NODEADDR_FLAG_GLOBAL;
+					 break;
+				 case 'A': /* experimental. not in the spec */
+					 naflags |= NI_NODEADDR_FLAG_ANYCAST;
+					 break;
+				 default:
+					 usage();
+				 }
+			 }
+			 break;
+		 }
+		 case 'b':
+#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
+			sockbufsize = atoi(optarg);
+#else
+			err(1,
+"-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
+#endif
+			break;
+		case 'c':
+			npackets = strtol(optarg, &e, 10);
+			if (npackets <= 0 || *optarg == '\0' || *e != '\0')
+				errx(1,
+				    "illegal number of packets -- %s", optarg);
+			break;
+		case 'd':
+			options |= F_SO_DEBUG;
+			break;
+		case 'f':
+			if (getuid()) {
+				errno = EPERM;
+				errx(1, "Must be superuser to flood ping");
+			}
+			options |= F_FLOOD;
+			setbuf(stdout, (char *)NULL);
+			break;
+		case 'h':		/* hoplimit */
+			hoplimit = strtol(optarg, &e, 10);
+			if (255 < hoplimit || hoplimit < -1)
+				errx(1,
+				    "illegal hoplimit -- %s", optarg);
+			break;
+		case 'I':
+			ifname = optarg;
+			options |= F_INTERFACE;
+#ifndef USE_SIN6_SCOPE_ID
+			usepktinfo++;
+#endif
+			break;
+		case 'i':		/* wait between sending packets */
+			interval = strtol(optarg, &e, 10);
+			if (interval <= 0 || *optarg == '\0' || *e != '\0')
+				errx(1,
+				    "illegal timing interval -- %s", optarg);
+			options |= F_INTERVAL;
+			break;
+		case 'l':
+			preload = strtol(optarg, &e, 10);
+			if (preload < 0 || *optarg == '\0' || *e != '\0')
+				errx(1, "illegal preload value -- %s", optarg);
+			break;
+		case 'n':
+			options |= F_NUMERIC;
+			break;
+		case 'p':		/* fill buffer with user pattern */
+			options |= F_PINGFILLED;
+			fill((char *)datap, optarg);
+				break;
+		case 'q':
+			options |= F_QUIET;
+			break;
+		case 'R':
+			options |= F_RROUTE;
+			break;
+		case 'S':
+			/* XXX: use getaddrinfo? */
+			if (inet_pton(AF_INET6, optarg, (void *)&srcaddr) != 1)
+				errx(1, "invalid IPv6 address: %s", optarg);
+			options |= F_SRCADDR;
+			usepktinfo++;
+			break;
+		case 's':		/* size of packet to send */
+			datalen = strtol(optarg, &e, 10);
+			if (datalen <= 0 || *optarg == '\0' || *e != '\0')
+				errx(1, "illegal datalen value -- %s", optarg);
+			if (datalen > MAXDATALEN)
+				errx(1,
+				    "datalen value too large, maximum is %d",
+				    MAXDATALEN);
+			break;
+		case 'v':
+			options |= F_VERBOSE;
+			break;
+		case 'w':
+		case 'W':
+			options |= F_FQDN;
+			break;
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+		case 'P':
+			options |= F_POLICY;
+			if (!strncmp("in", optarg, 2))
+				policy_in = strdup(optarg);
+			else if (!strncmp("out", optarg, 3))
+				policy_out = strdup(optarg);
+			else
+				errx(1, "invalid security policy");
+			break;
+#else
+		case 'A':
+			options |= F_AUTHHDR;
+			break;
+		case 'E':
+			options |= F_ENCRYPT;
+			break;
+#endif /*IPSEC_POLICY_IPSEC*/
+#endif /*IPSEC*/
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage();
+
+	if (argc > 1)
+		ip6optlen += inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1);
+
+	target = argv[argc - 1];
+
+	/* getaddrinfo */
+	bzero(&hints, sizeof(struct addrinfo));
+	if ((options & F_NUMERIC) == 0)
+		hints.ai_flags = AI_CANONNAME;
+	hints.ai_family = AF_INET6;
+#ifdef NRL_GETADDRINFO
+	hints.ai_socktype = SOCK_DGRAM;
+#else
+	hints.ai_socktype = SOCK_RAW;
+	hints.ai_protocol = IPPROTO_ICMPV6;
+#endif
+
+	ret_ga = getaddrinfo(target, NULL, &hints, &res);
+	if (ret_ga) {
+		fprintf(stderr, "ping6: %s\n", gai_strerror(ret_ga));
+		exit(1);
+	}
+	if (res->ai_canonname)
+		hostname = res->ai_canonname;
+	else
+		hostname = target;
+		
+	if (!res->ai_addr)
+		errx(1, "getaddrinfo failed");
+
+#ifdef NRL_GETADDRINFO
+	res->ai_socktype = SOCK_RAW;
+	res->ai_protocol = IPPROTO_ICMPV6;
+#endif
+	(void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
+
+	if (options & F_FLOOD && options & F_INTERVAL)
+		errx(1, "-f and -i incompatible options");
+
+	if (datalen >= sizeof(struct timeval))	/* can we time transfer */
+		timing = 1;
+	packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
+	if (!(packet = (u_char *)malloc((u_int)packlen)))
+		err(1, "Unable to allocate packet");
+	if (!(options & F_PINGFILLED))
+		for (i = 8; i < datalen; ++i)
+			*datap++ = i;
+
+	ident = getpid() & 0xFFFF;
+
+	if ((s = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) < 0)
+	  err(1, "socket");
+
+	hold = 1;
+
+	if (options & F_SO_DEBUG)
+		(void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
+		    sizeof(hold));
+	optval = IPV6_DEFHLIM;
+	if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
+		if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
+			       &optval, sizeof(optval)) == -1)
+			err(1, "IPV6_MULTICAST_HOPS");
+
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+	if (options & F_POLICY) {
+		if (setpolicy(s, policy_in) < 0)
+			errx(1, ipsec_strerror());
+		if (setpolicy(s, policy_out) < 0)
+			errx(1, ipsec_strerror());
+	}
+#else
+	if (options & F_AUTHHDR) {
+		optval = IPSEC_LEVEL_REQUIRE;
+#ifdef IPV6_AUTH_TRANS_LEVEL
+		if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
+				&optval, sizeof(optval)) == -1)
+			err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
+#else /* old def */
+		if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
+				&optval, sizeof(optval)) == -1)
+			err(1, "setsockopt(IPV6_AUTH_LEVEL)");
+#endif
+	}
+	if (options & F_ENCRYPT) {
+		optval = IPSEC_LEVEL_REQUIRE;
+		if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
+				&optval, sizeof(optval)) == -1)
+			err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
+	}
+#endif /*IPSEC_POLICY_IPSEC*/
+#endif
+
+#ifdef ICMP6_FILTER
+    {
+	struct icmp6_filter filt;
+	if (!(options & F_VERBOSE)) {
+		ICMP6_FILTER_SETBLOCKALL(&filt);
+		if ((options & F_FQDN) || (options & F_NODEADDR))
+			ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
+		else
+			ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
+	} else {
+		ICMP6_FILTER_SETPASSALL(&filt);
+	}
+	if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
+			sizeof(filt)) < 0)
+		err(1, "setsockopt(ICMP6_FILTER)");
+    }
+#endif /*ICMP6_FILTER*/
+
+/*
+	optval = 1; 
+	if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
+		if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
+			       &optval, sizeof(optval)) == -1)
+			err(1, "IPV6_MULTICAST_LOOP");
+*/
+	/* record route option */
+	if (options & F_RROUTE)
+		errx(1, "record route not available in this implementation");
+
+	/* Specify the outgoing interface and/or the source address */
+	if (usepktinfo)
+		ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
+
+	if (hoplimit != -1)
+		ip6optlen += CMSG_SPACE(sizeof(int));
+
+	/* set IP6 packet options */
+	if (ip6optlen) {
+		if ((scmsg = (char *)malloc(ip6optlen)) == 0)
+			errx(1, "can't allocate enough memory");
+		smsghdr.msg_control = (caddr_t)scmsg;
+		smsghdr.msg_controllen = ip6optlen;
+		scmsgp = (struct cmsghdr *)scmsg;
+	}
+	if (usepktinfo) {
+		pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
+		memset(pktinfo, 0, sizeof(*pktinfo));
+		scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
+		scmsgp->cmsg_level = IPPROTO_IPV6;
+		scmsgp->cmsg_type = IPV6_PKTINFO;
+		scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
+	}
+
+	/* set the outgoing interface */
+	if (ifname) {
+#ifndef USE_SIN6_SCOPE_ID
+		/* pktinfo must have already been allocated */
+		if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
+			    errx(1, "%s: invalid interface name", ifname);
+#else
+		if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
+			errx(1, "%s: invalid interface name", ifname);
+#endif
+	}
+	/* set the source address */
+	if (options & F_SRCADDR)/* pktinfo must be valid */
+		pktinfo->ipi6_addr = srcaddr;
+
+	if (hoplimit != -1) {
+		scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
+		scmsgp->cmsg_level = IPPROTO_IPV6;
+		scmsgp->cmsg_type = IPV6_HOPLIMIT;
+		*(int *)(CMSG_DATA(scmsgp)) = hoplimit;
+
+		scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
+	}
+	if (argc > 1) {	/* some intermediate addrs are specified */
+		int hops, error;
+		
+		if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp,
+								 IPV6_RTHDR_TYPE_0)) == 0)
+			errx(1, "can't initialize rthdr");
+
+		for (hops = 0; hops < argc - 1; hops++) {
+			struct addrinfo *iaip;
+
+			if ((error = getaddrinfo(argv[hops], NULL, &hints, &iaip)))
+				errx(1, gai_strerror(error));
+			if (SIN6(res->ai_addr)->sin6_family != AF_INET6)
+				errx(1,
+				     "bad addr family of an intermediate addr");
+
+			if (inet6_rthdr_add(scmsgp,
+					    &(SIN6(iaip->ai_addr))->sin6_addr,
+					    IPV6_RTHDR_LOOSE))
+				errx(1, "can't add an intermediate node");
+		}
+
+		if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE))
+			errx(1, "can't set the last flag");
+
+		scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
+	}
+
+	{
+		/* 
+		 * source selection
+		 */
+		int dummy, len = sizeof(src);
+		
+		if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
+			err(1, "UDP socket");
+
+		src.sin6_family = AF_INET6;
+		src.sin6_addr = dst.sin6_addr;
+		src.sin6_port = ntohs(DUMMY_PORT);
+		src.sin6_scope_id = dst.sin6_scope_id;
+
+#ifndef USE_SIN6_SCOPE_ID
+		if (setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS,
+			       (void *)smsghdr.msg_control,
+			       smsghdr.msg_controllen)) {
+			err(1, "UDP setsockopt(IPV6_PKTOPTIONS)");
+		}
+#else
+		src.sin6_scope_id = dst.sin6_scope_id;
+#endif
+				
+		if (connect(dummy, (struct sockaddr *)&src, len) < 0)
+			err(1, "UDP connect");
+	
+		if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0)
+			err(1, "getsockname");
+
+		close(dummy);
+	}
+
+#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
+	if (sockbufsize) {
+		if (datalen > sockbufsize)
+			warnx("you need -b to increae socket buffer size");
+		if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
+			       sizeof(sockbufsize)) < 0)
+			err(1, "setsockopt(SO_SNDBUF)");
+		if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
+			       sizeof(sockbufsize)) < 0)
+			err(1, "setsockopt(SO_RCVBUF)");
+	}
+	else {
+		if (datalen > 8 * 1024)	/*XXX*/
+			warnx("you need -b to increase socket buffer size");
+		/*
+		 * When pinging the broadcast address, you can get a lot of
+		 * answers. Doing something so evil is useful if you are trying
+		 * to stress the ethernet, or just want to fill the arp cache
+		 * to get some stuff for /etc/ethers.
+		 */
+		hold = 48 * 1024;
+		setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, sizeof(hold));
+	}
+#endif
+
+	optval = 1;
+#ifndef USE_SIN6_SCOPE_ID
+	setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval, sizeof(optval));
+#endif
+	setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval, sizeof(optval));
+
+	printf("PING6(%d=40+8+%d bytes) ", datalen + 48, datalen);
+	printf("%s --> ", inet_ntop(AF_INET6, &src.sin6_addr, ntop_buf, sizeof(ntop_buf)));
+	printf("%s\n", inet_ntop(AF_INET6, &dst.sin6_addr, ntop_buf, sizeof(ntop_buf)));
+
+	while (preload--)		/* Fire off them quickies. */
+		pinger();
+
+	(void)signal(SIGINT, onint);
+	(void)signal(SIGINFO, oninfo);
+
+	if ((options & F_FLOOD) == 0) {
+		(void)signal(SIGALRM, onalrm);
+		itimer.it_interval.tv_sec = interval;
+		itimer.it_interval.tv_usec = 0;
+		itimer.it_value.tv_sec = 0;
+		itimer.it_value.tv_usec = 1;
+		(void)setitimer(ITIMER_REAL, &itimer, NULL);
+	}
+
+	FD_ZERO(&fdset);
+	timeout.tv_sec = 0;
+	timeout.tv_usec = 10000;
+	for (;;) {
+		struct msghdr m;
+		struct cmsghdr *cm;
+		u_char buf[256];
+		struct iovec iov[2];
+
+		if (options & F_FLOOD) {
+			pinger();
+			FD_SET(s, &fdset);
+			if (select(s + 1, &fdset, NULL, NULL, &timeout) < 1)
+				continue;
+		}
+		fromlen = sizeof(from);
+
+		m.msg_name = (caddr_t)&from;
+		m.msg_namelen = sizeof(from);
+		memset(&iov, 0, sizeof(iov));
+		iov[0].iov_base = (caddr_t)packet;
+		iov[0].iov_len = packlen;
+		m.msg_iov = iov;
+		m.msg_iovlen = 1;
+		cm = (struct cmsghdr *)buf;
+		m.msg_control = (caddr_t)buf;
+		m.msg_controllen = sizeof(buf);
+
+		if ((cc = recvmsg(s, &m, 0)) < 0) {
+			if (errno == EINTR)
+				continue;
+			warn("recvfrom");
+			continue;
+		}
+
+		pr_pack(packet, cc, &m);
+		if (npackets && nreceived >= npackets)
+			break;
+	}
+	summary();
+	exit(nreceived == 0);
+}
+
+/*
+ * onalrm --
+ *	This routine transmits another ping6.
+ */
+void
+onalrm(signo)
+	int signo;
+{
+	struct itimerval itimer;
+
+	if (!npackets || ntransmitted < npackets) {
+		pinger();
+		return;
+	}
+
+	/*
+	 * If we're not transmitting any more packets, change the timer
+	 * to wait two round-trip times if we've received any packets or
+	 * ten seconds if we haven't.
+	 */
+#define	MAXWAIT		10
+	if (nreceived) {
+		itimer.it_value.tv_sec =  2 * tmax / 1000;
+		if (itimer.it_value.tv_sec == 0)
+			itimer.it_value.tv_sec = 1;
+	} else
+		itimer.it_value.tv_sec = MAXWAIT;
+	itimer.it_interval.tv_sec = 0;
+	itimer.it_interval.tv_usec = 0;
+	itimer.it_value.tv_usec = 0;
+
+	(void)signal(SIGALRM, onint);
+	(void)setitimer(ITIMER_REAL, &itimer, NULL);
+}
+
+/*
+ * pinger --
+ *	Compose and transmit an ICMP ECHO REQUEST packet.  The IP packet
+ * will be added on by the kernel.  The ID field is our UNIX process ID,
+ * and the sequence number is an ascending integer.  The first 8 bytes
+ * of the data portion are used to hold a UNIX "timeval" struct in VAX
+ * byte-order, to compute the round-trip time.
+ */
+void
+pinger()
+{
+	struct icmp6_hdr *icp;
+	struct iovec iov[2];
+	int i, cc;
+
+	icp = (struct icmp6_hdr *)outpack;
+	icp->icmp6_code = 0;
+	icp->icmp6_cksum = 0;
+	icp->icmp6_seq = ntransmitted++;		/* htons later */
+	icp->icmp6_id = htons(ident);			/* ID */
+
+	CLR(icp->icmp6_seq % mx_dup_ck);
+	icp->icmp6_seq = htons(icp->icmp6_seq);
+
+	if (options & F_FQDN) {
+		icp->icmp6_type = ICMP6_NI_QUERY;
+		/* code field is always 0 */
+		/* XXX: overwrite icmp6_id */
+		icp->icmp6_data16[0] = htons(NI_QTYPE_FQDN);
+		if (timing)
+			(void)gettimeofday((struct timeval *)
+					   &outpack[ICMP6ECHOLEN], NULL);
+		cc = ICMP6_NIQLEN;
+		datalen = 0;
+	} else if (options & F_NODEADDR) {
+		icp->icmp6_type = ICMP6_NI_QUERY;
+		/* code field is always 0 */
+		/* XXX: overwrite icmp6_id */
+		icp->icmp6_data16[0] = htons(NI_QTYPE_NODEADDR);
+		if (timing)
+			(void)gettimeofday((struct timeval *)
+					   &outpack[ICMP6ECHOLEN], NULL);
+		cc = ICMP6_NIQLEN;
+		datalen = 0;
+		((struct icmp6_nodeinfo *)icp)->ni_flags = naflags;
+	}
+	else {
+		icp->icmp6_type = ICMP6_ECHO_REQUEST;
+		if (timing)
+			(void)gettimeofday((struct timeval *)
+					   &outpack[ICMP6ECHOLEN], NULL);
+		cc = ICMP6ECHOLEN + datalen;
+	}
+
+	smsghdr.msg_name = (caddr_t)&dst;
+	smsghdr.msg_namelen = sizeof(dst);
+	memset(&iov, 0, sizeof(iov));
+	iov[0].iov_base = (caddr_t)outpack;
+	iov[0].iov_len = cc;
+	smsghdr.msg_iov = iov;
+	smsghdr.msg_iovlen = 1;
+
+	i = sendmsg(s, &smsghdr, 0);
+
+	if (i < 0 || i != cc)  {
+		if (i < 0)
+			warn("sendmsg");
+		(void)printf("ping6: wrote %s %d chars, ret=%d\n",
+		    hostname, cc, i);
+	}
+	if (!(options & F_QUIET) && options & F_FLOOD)
+		(void)write(STDOUT_FILENO, &DOT, 1);
+}
+
+/*
+ * pr_pack --
+ *	Print out the packet, if it came from us.  This logic is necessary
+ * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
+ * which arrive ('tis only fair).  This permits multiple copies of this
+ * program to be run without having intermingled output (or statistics!).
+ */
+void
+pr_pack(buf, cc, mhdr)
+	u_char *buf;
+	int cc;
+	struct msghdr *mhdr;
+{
+	struct icmp6_hdr *icp;
+	int i;
+	int hoplim;
+	struct sockaddr_in6 *from = (struct sockaddr_in6 *)mhdr->msg_name;
+	u_char *cp = NULL, *dp, *end = buf + cc;
+#ifdef OLD_RAWSOCKET
+	struct ip6_hdr *ip;
+#endif
+	struct timeval tv, *tp;
+	double triptime = 0;
+	int dupflag;
+	size_t off;
+
+	(void)gettimeofday(&tv, NULL);
+
+#ifdef OLD_RAWSOCKET
+	/* Check the IP header */
+	ip = (struct ip6_hdr *)buf;
+	if (cc < sizeof(struct icmp6_hdr) + sizeof(struct ip6_hdr)) {
+		if (options & F_VERBOSE)
+			warnx("packet too short (%d bytes) from %s\n", cc,
+			  inet_ntop(AF_INET6, (void *)&from->sin6_addr,
+				    ntop_buf, sizeof(ntop_buf)));
+		return;
+	}
+
+	/* chase nexthdr link */
+    {
+	u_int8_t nh;
+	struct ah *ah;
+	struct ip6_ext *ip6e;
+
+	off = IP6LEN;
+	nh = ip->ip6_nxt;
+	while (nh != IPPROTO_ICMPV6) {
+		if (options & F_VERBOSE)
+			fprintf(stderr, "header chain: type=0x%x\n", nh);
+
+		switch (nh) {
+#ifdef IPSEC
+		case IPPROTO_AH:
+			ah = (struct ah *)(buf + off);
+			off += sizeof(struct ah);
+			off += (ah->ah_len << 2);
+			nh = ah->ah_nxt;
+			break;
+#endif
+
+		 case IPPROTO_HOPOPTS:
+			ip6e = (struct ip6_ext *)(buf + off);
+			off += (ip6e->ip6e_len + 1) << 3;
+			nh = ip6e->ip6e_nxt;
+			break;
+		default:
+			if (options & F_VERBOSE) {
+				fprintf(stderr,
+					"unknown header type=0x%x: drop it\n",
+					nh);
+			}
+			return;
+		}
+	}
+    }
+	/* Now the ICMP part */
+	icp = (struct icmp6_hdr *)(buf + off);
+#else
+	if (cc < sizeof(struct icmp6_hdr)) {
+		if (options & F_VERBOSE)
+			warnx("packet too short (%d bytes) from %s\n", cc,
+			  inet_ntop(AF_INET6, (void *)&from->sin6_addr,
+				    ntop_buf, sizeof(ntop_buf)));
+		return;
+	}
+	icp = (struct icmp6_hdr *)buf;
+	off = 0;
+#endif
+
+	if ((hoplim = get_hoplim(mhdr)) == -1) {
+		warnx("failed to get receiving hop limit");
+		return;
+	}
+
+	if (icp->icmp6_type == ICMP6_ECHO_REPLY) {
+		/* XXX the following line overwrites the original packet */
+		icp->icmp6_seq = ntohs(icp->icmp6_seq);
+		if (ntohs(icp->icmp6_id) != ident)
+			return;			/* It was not our ECHO */
+		++nreceived;
+		if (timing) {
+			tp = (struct timeval *)(icp + 1);
+			tvsub(&tv, tp);
+			triptime = ((double)tv.tv_sec) * 1000.0 +
+			    ((double)tv.tv_usec) / 1000.0;
+			tsum += triptime;
+			if (triptime < tmin)
+				tmin = triptime;
+			if (triptime > tmax)
+				tmax = triptime;
+		}
+
+		if (TST(icp->icmp6_seq % mx_dup_ck)) {
+			++nrepeats;
+			--nreceived;
+			dupflag = 1;
+		} else {
+			SET(icp->icmp6_seq % mx_dup_ck);
+			dupflag = 0;
+		}
+
+		if (options & F_QUIET)
+			return;
+
+		if (options & F_FLOOD)
+			(void)write(STDOUT_FILENO, &BSPACE, 1);
+		else {
+			(void)printf("%d bytes from %s, icmp_seq=%u", cc,
+				     pr_addr(from),
+				     icp->icmp6_seq);
+			(void)printf(" hlim=%d", hoplim);
+			if (timing)
+				(void)printf(" time=%g ms", triptime);
+			if (dupflag)
+				(void)printf("(DUP!)");
+			/* check the data */
+			cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
+			dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN;
+			for (i = 8; cp < end; ++i, ++cp, ++dp) {
+				if (*cp != *dp) {
+					(void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp);
+					break;
+				}
+			}
+		}
+	} else if (icp->icmp6_type == ICMP6_NI_REPLY) { /* ICMP6_NI_REPLY */
+		struct icmp6_nodeinfo *ni = (struct icmp6_nodeinfo *)(buf + off);
+
+		(void)printf("%d bytes from %s: ", cc,
+			     pr_addr(from));
+
+		switch(ntohs(ni->ni_qtype)) {
+		 case NI_QTYPE_NOOP:
+			 printf("NodeInfo NOOP");
+			 break;
+		 case NI_QTYPE_SUPTYPES:
+			 printf("NodeInfo Supported Qtypes");
+			 break;
+		 case NI_QTYPE_NODEADDR:
+			 pr_nodeaddr(ni, end - (u_char *)ni);
+			 break;
+		 case NI_QTYPE_FQDN:
+		 default:	/* XXX: for backward compatibility */
+			 cp = (u_char *)ni + ICMP6_NIRLEN + 1;
+			 while (cp < end) {
+				 if (isprint(*cp))
+					 putchar(*cp);
+				 else
+					 printf("\\%03o", *cp & 0xff);
+				 cp++;
+			 }
+			 if (options & F_VERBOSE) {
+				 long ttl;
+
+				 (void)printf(" (");
+
+				 switch(ni->ni_code) {
+				  case ICMP6_NI_REFUSED:
+					  (void)printf("refused,");
+					  break;
+				  case ICMP6_NI_UNKNOWN:
+					  (void)printf("unknwon qtype,");
+					  break;
+				 }
+
+				 if ((end - (u_char *)ni) < ICMP6_NIRLEN) {
+					 /* case of refusion, unkown */
+					 goto fqdnend;
+				 }
+				 ttl = ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]);
+				 if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL))
+					 (void)printf("TTL=%d:meaningless",
+						      (int)ttl);
+				 else {
+					 if (ttl < 0)
+						 (void)printf("TTL=%d:invalid",
+							      (int)ttl);
+					 else
+						 (void)printf("TTL=%d",
+							      (int)ttl);
+				 }
+
+				 if (buf[off + ICMP6_NIRLEN] !=
+				     cc - off - ICMP6_NIRLEN - 1) {
+					 (void)printf(",invalid namelen:%d/%lu",
+						      buf[off + ICMP6_NIRLEN],
+						      (u_long)cc - off - ICMP6_NIRLEN - 1);
+				 }
+				 putchar(')');
+			 }
+		  fqdnend:
+			 ;
+		}
+	} else {
+		/* We've got something other than an ECHOREPLY */
+		if (!(options & F_VERBOSE))
+			return;
+		(void)printf("%d bytes from %s: ", cc,
+			     pr_addr(from));
+		pr_icmph(icp, end);
+	}
+
+	if (!(options & F_FLOOD)) {
+		(void)putchar('\n');
+		(void)fflush(stdout);
+	}
+}
+
+void
+pr_nodeaddr(ni, nilen)
+	struct icmp6_nodeinfo *ni; /* ni->qtype must be NODEADDR */
+	int nilen;
+{
+	struct in6_addr *ia6 = (struct in6_addr *)(ni + 1);
+
+	nilen -= sizeof(struct icmp6_nodeinfo);
+
+	if (options & F_VERBOSE) {
+		switch(ni->ni_code) {
+		 case ICMP6_NI_REFUSED:
+			 (void)printf("refused");
+			 break;
+		 case ICMP6_NI_UNKNOWN:
+			 (void)printf("unknown qtype");
+			 break;
+		}
+		if (ni->ni_flags & NI_NODEADDR_FLAG_ALL)
+			(void)printf(" truncated");
+	}
+	putchar('\n');
+	if (nilen <= 0)
+		printf("  no address\n");
+	for (; nilen > 0; nilen -= sizeof(*ia6), ia6 += 1) {
+		printf("  %s\n",
+		       inet_ntop(AF_INET6, ia6, ntop_buf, sizeof(ntop_buf)));
+	}
+}
+
+int
+get_hoplim(mhdr)
+	struct msghdr *mhdr;
+{
+	struct cmsghdr *cm;
+
+	for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm;
+	     cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) {
+		if (cm->cmsg_level == IPPROTO_IPV6 &&
+		    cm->cmsg_type == IPV6_HOPLIMIT &&
+		    cm->cmsg_len == CMSG_LEN(sizeof(int)))
+			return(*(int *)CMSG_DATA(cm));
+	}
+
+	return(-1);
+}
+
+/*
+ * tvsub --
+ *	Subtract 2 timeval structs:  out = out - in.  Out is assumed to
+ * be >= in.
+ */
+void
+tvsub(out, in)
+	register struct timeval *out, *in;
+{
+	if ((out->tv_usec -= in->tv_usec) < 0) {
+		--out->tv_sec;
+		out->tv_usec += 1000000;
+	}
+	out->tv_sec -= in->tv_sec;
+}
+
+/*
+ * oninfo --
+ *	SIGINFO handler.
+ */
+void
+oninfo(notused)
+	int notused;
+{
+	summary();
+}
+
+/*
+ * onint --
+ *	SIGINT handler.
+ */
+void
+onint(notused)
+	int notused;
+{
+	summary();
+
+	(void)signal(SIGINT, SIG_DFL);
+	(void)kill(getpid(), SIGINT);
+
+	/* NOTREACHED */
+	exit(1);
+}
+
+/*
+ * summary --
+ *	Print out statistics.
+ */
+void
+summary()
+{
+	register int i;
+
+	(void)printf("\n--- %s ping6 statistics ---\n", hostname);
+	(void)printf("%ld packets transmitted, ", ntransmitted);
+	(void)printf("%ld packets received, ", nreceived);
+	if (nrepeats)
+		(void)printf("+%ld duplicates, ", nrepeats);
+	if (ntransmitted) {
+		if (nreceived > ntransmitted)
+			(void)printf("-- somebody's printing up packets!");
+		else
+			(void)printf("%d%% packet loss",
+			    (int) (((ntransmitted - nreceived) * 100) /
+			    ntransmitted));
+	}
+	(void)putchar('\n');
+	if (nreceived && timing) {
+		/* Only display average to microseconds */
+		i = 1000.0 * tsum / (nreceived + nrepeats);
+		(void)printf("round-trip min/avg/max = %g/%g/%g ms\n",
+		    tmin, ((double)i) / 1000.0, tmax);
+		(void)fflush(stdout);
+	}
+}
+
+#ifdef notdef
+static char *ttab[] = {
+	"Echo Reply",		/* ip + seq + udata */
+	"Dest Unreachable",	/* net, host, proto, port, frag, sr + IP */
+	"Source Quench",	/* IP */
+	"Redirect",		/* redirect type, gateway, + IP  */
+	"Echo",
+	"Time Exceeded",	/* transit, frag reassem + IP */
+	"Parameter Problem",	/* pointer + IP */
+	"Timestamp",		/* id + seq + three timestamps */
+	"Timestamp Reply",	/* " */
+	"Info Request",		/* id + sq */
+	"Info Reply"		/* " */
+};
+#endif
+
+/*
+ * pr_icmph --
+ *	Print a descriptive string about an ICMP header.
+ */
+void
+pr_icmph(icp, end)
+	struct icmp6_hdr *icp;
+	u_char *end;
+{
+	switch(icp->icmp6_type) {
+	case ICMP6_DST_UNREACH:
+		switch(icp->icmp6_code) {
+		case ICMP6_DST_UNREACH_NOROUTE:
+			(void)printf("No Route to Destination\n");
+			break;
+		case ICMP6_DST_UNREACH_ADMIN:
+			(void)printf("Destination Administratively "
+				     "Unreachable\n");
+			break;
+		case ICMP6_DST_UNREACH_BEYONDSCOPE:
+			(void)printf("Destination Unreachable Beyond Scope\n");
+			break;
+		case ICMP6_DST_UNREACH_ADDR:
+			(void)printf("Destination Host Unreachable\n");
+			break;
+		case ICMP6_DST_UNREACH_NOPORT:
+			(void)printf("Destination Port Unreachable\n");
+			break;
+		default:
+			(void)printf("Destination Unreachable, Bad Code: %d\n",
+			    icp->icmp6_code);
+			break;
+		}
+		/* Print returned IP header information */
+		pr_retip((struct ip6_hdr *)(icp + 1), end);
+		break;
+	case ICMP6_PACKET_TOO_BIG:
+		(void)printf("Packet too big mtu = %d\n",
+			     (int)ntohl(icp->icmp6_mtu));
+		break;
+	case ICMP6_TIME_EXCEEDED:
+		switch(icp->icmp6_code) {
+		case ICMP6_TIME_EXCEED_TRANSIT:
+			(void)printf("Time to live exceeded\n");
+			break;
+		case ICMP6_TIME_EXCEED_REASSEMBLY:
+			(void)printf("Frag reassembly time exceeded\n");
+			break;
+		default:
+			(void)printf("Time exceeded, Bad Code: %d\n",
+			    icp->icmp6_code);
+			break;
+		}
+		pr_retip((struct ip6_hdr *)(icp + 1), end);
+		break;
+	case ICMP6_PARAM_PROB:
+		(void)printf("Parameter problem: ");
+		switch(icp->icmp6_code) {
+		 case ICMP6_PARAMPROB_HEADER:
+			 (void)printf("Erroneous Header ");
+			 break;
+		 case ICMP6_PARAMPROB_NEXTHEADER:
+			 (void)printf("Unknown Nextheader ");
+			 break;
+		 case ICMP6_PARAMPROB_OPTION:
+			 (void)printf("Unrecognized Option ");
+			 break;
+		 default:
+			 (void)printf("Bad code(%d) ", icp->icmp6_code);
+			 break;
+		}
+		(void)printf("pointer = 0x%02x\n",
+			     (int)ntohl(icp->icmp6_pptr));
+		pr_retip((struct ip6_hdr *)(icp + 1), end);
+		break;
+	case ICMP6_ECHO_REQUEST:
+		(void)printf("Echo Request\n");
+		/* XXX ID + Seq + Data */
+		break;
+	case ICMP6_ECHO_REPLY:
+		(void)printf("Echo Reply\n");
+		/* XXX ID + Seq + Data */
+		break;
+	case ICMP6_MEMBERSHIP_QUERY:
+		(void)printf("Membership Query\n");
+		break;
+	case ICMP6_MEMBERSHIP_REPORT:
+		(void)printf("Membership Report\n");
+		break;
+	case ICMP6_MEMBERSHIP_REDUCTION:
+		(void)printf("Membership Reduction\n");
+		break;
+	case ND_ROUTER_SOLICIT:
+		(void)printf("Router Solicitation\n");
+		break;
+	case ND_ROUTER_ADVERT:
+		(void)printf("Router Advertisement\n");
+		break;
+	case ND_NEIGHBOR_SOLICIT:
+		(void)printf("Neighbor Solicitation\n");
+		break;
+	case ND_NEIGHBOR_ADVERT:
+		(void)printf("Neighbor Advertisement\n");
+		break;
+	case ND_REDIRECT:
+	{
+		struct nd_redirect *red = (struct nd_redirect *)icp;
+
+		(void)printf("Redirect\n");
+		(void)printf("Destination: %s\n",
+			     inet_ntop(AF_INET6, &red->nd_rd_dst,
+				       ntop_buf, sizeof(ntop_buf)));
+		(void)printf("New Target: %s\n",
+			     inet_ntop(AF_INET6, &red->nd_rd_target,
+				       ntop_buf, sizeof(ntop_buf)));
+		break;
+	}
+	case ICMP6_NI_QUERY:
+		(void)printf("Node Information Query\n");
+		/* XXX ID + Seq + Data */
+		break;
+	case ICMP6_NI_REPLY:
+		(void)printf("Node Information Reply\n");
+		/* XXX ID + Seq + Data */
+		break;
+	default:
+		(void)printf("Bad ICMP type: %d\n", icp->icmp6_type);
+	}
+}
+
+/*
+ * pr_iph --
+ *	Print an IP6 header.
+ */
+void
+pr_iph(ip6)
+	struct ip6_hdr *ip6;
+{
+	u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK;
+	u_int8_t tc;
+
+	tc = *(&ip6->ip6_vfc + 1); /* XXX */
+	tc = (tc >> 4) & 0x0f;
+	tc |= (ip6->ip6_vfc << 4);
+
+	printf("Vr TC  Flow Plen Nxt Hlim\n");
+	printf(" %1x %02x %05x %04x  %02x   %02x\n",
+	       (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (int)ntohl(flow),
+	       ntohs(ip6->ip6_plen),
+	       ip6->ip6_nxt, ip6->ip6_hlim);
+	printf("%s->", inet_ntop(AF_INET6, &ip6->ip6_src,
+				  ntop_buf, INET6_ADDRSTRLEN));
+	printf("%s\n", inet_ntop(AF_INET6, &ip6->ip6_dst,
+				 ntop_buf, INET6_ADDRSTRLEN));
+}
+
+/*
+ * pr_addr --
+ *	Return an ascii host address as a dotted quad and optionally with
+ * a hostname.
+ */
+char *
+pr_addr(addr)
+	struct sockaddr_in6 *addr;
+{
+	static char buf[MAXHOSTNAMELEN];
+	int flag = 0;
+
+	if (options & F_NUMERIC)
+		flag |= NI_NUMERICHOST;
+#ifdef KAME_SCOPEID
+	flag |= NI_WITHSCOPEID;
+#endif
+
+	getnameinfo((struct sockaddr *)addr, addr->sin6_len, buf, sizeof(buf),
+		NULL, 0, flag);
+
+	return (buf);
+}
+
+/*
+ * pr_retip --
+ *	Dump some info on a returned (via ICMPv6) IPv6 packet.
+ */
+void
+pr_retip(ip6, end)
+	struct ip6_hdr *ip6;
+	u_char *end;
+{
+	u_char *cp = (u_char *)ip6, nh;
+	int hlen;
+
+	if (end - (u_char *)ip6 < sizeof(*ip6)) {
+		printf("IP6");
+		goto trunc;
+	}
+	pr_iph(ip6);
+	hlen = sizeof(*ip6);
+
+	nh = ip6->ip6_nxt;
+	cp += hlen;
+	while (end - cp >= 8) {
+		switch (nh) {
+		 case IPPROTO_HOPOPTS:
+			 printf("HBH ");
+			 hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3;
+			 nh = ((struct ip6_hbh *)cp)->ip6h_nxt;
+			 break;
+		 case IPPROTO_DSTOPTS:
+			 printf("DSTOPT ");
+			 hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3;
+			 nh = ((struct ip6_dest *)cp)->ip6d_nxt;
+			 break;
+		 case IPPROTO_FRAGMENT:
+			 printf("FRAG ");
+			 hlen = sizeof(struct ip6_frag);
+			 nh = ((struct ip6_frag *)cp)->ip6f_nxt;
+			 break;
+		 case IPPROTO_ROUTING:
+			 printf("RTHDR ");
+			 hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3;
+			 nh = ((struct ip6_rthdr *)cp)->ip6r_nxt;
+			 break;
+#ifdef IPSEC
+		 case IPPROTO_AH:
+			 printf("AH ");
+			 hlen = (((struct ah *)cp)->ah_len+2) << 2;
+			 nh = ((struct ah *)cp)->ah_nxt;
+			 break;
+#endif
+		 case IPPROTO_ICMPV6:
+			 printf("ICMP6: type = %d, code = %d\n",
+				*cp, *(cp + 1));
+			 return;
+		 case IPPROTO_ESP:
+			 printf("ESP\n");
+			 return;
+		 case IPPROTO_TCP:
+			 printf("TCP: from port %u, to port %u (decimal)\n",
+				(*cp * 256 + *(cp + 1)),
+				(*(cp + 2) * 256 + *(cp + 3)));
+			 return;
+		 case IPPROTO_UDP:
+			 printf("UDP: from port %u, to port %u (decimal)\n",
+				(*cp * 256 + *(cp + 1)),
+				(*(cp + 2) * 256 + *(cp + 3)));
+			 return;
+		 default:
+			 printf("Unknown Header(%d)\n", nh);
+			 return;
+		}
+
+		if ((cp += hlen) >= end)
+			goto trunc;
+	}
+	if (end - cp < 8)
+		goto trunc;
+
+	putchar('\n');
+	return;
+
+  trunc:
+	printf("...\n");
+	return;
+}
+
+void
+fill(bp, patp)
+	char *bp, *patp;
+{
+	register int ii, jj, kk;
+	int pat[16];
+	char *cp;
+
+	for (cp = patp; *cp; cp++)
+		if (!isxdigit(*cp))
+			errx(1, "patterns must be specified as hex digits");
+	ii = sscanf(patp,
+	    "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
+	    &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
+	    &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
+	    &pat[13], &pat[14], &pat[15]);
+
+/* xxx */	
+	if (ii > 0)
+		for (kk = 0;
+		    kk <= MAXDATALEN - (8 + sizeof(struct timeval) + ii);
+		    kk += ii)
+			for (jj = 0; jj < ii; ++jj)
+				bp[jj + kk] = pat[jj];
+	if (!(options & F_QUIET)) {
+		(void)printf("PATTERN: 0x");
+		for (jj = 0; jj < ii; ++jj)
+			(void)printf("%02x", bp[jj] & 0xFF);
+		(void)printf("\n");
+	}
+}
+
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+int
+setpolicy(so, policy)
+	int so;
+	char *policy;
+{
+	char *buf;
+
+	if (policy == NULL)
+		return 0;	/* ignore */
+
+	buf = ipsec_set_policy(policy, strlen(policy));
+	if (buf == NULL)
+		errx(1, ipsec_strerror());
+	if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY,
+			buf, ipsec_get_policylen(buf)) < 0)
+		warnx("Unable to set IPSec policy");
+	free(buf);
+
+	return 0;
+}
+#endif
+#endif
+
+void
+usage()
+{
+	(void)fprintf(stderr,
+"usage: ping6 [-dfnqRrvwW"
+#ifdef IPSEC
+#ifdef IPSEC_POLICY_IPSEC
+		      "] [-P policy"
+#else
+		      "AE"
+#endif
+#endif		      
+		      "] [-a [alsg]] [-b sockbufsiz] [-c count] [-I interface]\n\
+             [-i wait] [-l preload] [-p pattern] [-S sourceaddr]\n\
+             [-s packetsize] [-h hoplimit] host [hosts...]\n");
+	exit(1);
+}