diff --git a/print-isakmp.c b/print-isakmp.c
new file mode 100644
index 0000000..4b48d32
--- /dev/null
+++ b/print-isakmp.c
@@ -0,0 +1,1447 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.51 2005/04/07 00:28:17 mcr Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <string.h>
+
+#include <stdio.h>
+
+#include "isakmp.h"
+#include "ipsec_doi.h"
+#include "oakley.h"
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"                    /* must come after interface.h */
+
+#include "ip.h"
+#ifdef INET6
+#include "ip6.h"
+#endif
+
+#ifndef HAVE_SOCKADDR_STORAGE
+#define sockaddr_storage sockaddr
+#endif
+
+static const u_char *isakmp_sa_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_p_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_t_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_ke_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_id_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_cert_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_cr_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_sig_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_hash_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_nonce_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_n_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_d_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_vid_print(const struct isakmp_gen *,
+	u_int, const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_sub0_print(u_char, const struct isakmp_gen *,
+	const u_char *,	u_int32_t, u_int32_t, u_int32_t, int);
+static const u_char *isakmp_sub_print(u_char, const struct isakmp_gen *,
+	const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
+static char *numstr(int);
+static void safememcpy(void *, const void *, size_t);
+
+#define MAXINITIATORS	20
+int ninitiator = 0;
+struct {
+	cookie_t initiator;
+	struct sockaddr_storage iaddr;
+	struct sockaddr_storage raddr;
+} cookiecache[MAXINITIATORS];
+
+/* protocol id */
+static const char *protoidstr[] = {
+	NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp",
+};
+
+/* isakmp->np */
+static const char *npstr[] = {
+	"none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash",
+	"sig", "nonce", "n", "d", "vid"
+};
+
+/* isakmp->np */
+static const u_char *(*npfunc[])(const struct isakmp_gen *, u_int,
+		const u_char *, u_int32_t, u_int32_t, u_int32_t, int) = {
+	NULL,
+	isakmp_sa_print,
+	isakmp_p_print,
+	isakmp_t_print,
+	isakmp_ke_print,
+	isakmp_id_print,
+	isakmp_cert_print,
+	isakmp_cr_print,
+	isakmp_hash_print,
+	isakmp_sig_print,
+	isakmp_nonce_print,
+	isakmp_n_print,
+	isakmp_d_print,
+	isakmp_vid_print,
+};
+
+/* isakmp->etype */
+static const char *etypestr[] = {
+	"none", "base", "ident", "auth", "agg", "inf", NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	"oakley-quick", "oakley-newgroup",
+};
+
+#define STR_OR_ID(x, tab) \
+	(((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)])	? tab[(x)] : numstr(x))
+#define PROTOIDSTR(x)	STR_OR_ID(x, protoidstr)
+#define NPSTR(x)	STR_OR_ID(x, npstr)
+#define ETYPESTR(x)	STR_OR_ID(x, etypestr)
+
+#define NPFUNC(x) \
+	(((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \
+		? npfunc[(x)] : NULL)
+
+static int
+iszero(u_char *p, size_t l)
+{
+	while (l--) {
+		if (*p++)
+			return 0;
+	}
+	return 1;
+}
+
+/* find cookie from initiator cache */
+static int
+cookie_find(cookie_t *in)
+{
+	int i;
+
+	for (i = 0; i < MAXINITIATORS; i++) {
+		if (memcmp(in, &cookiecache[i].initiator, sizeof(*in)) == 0)
+			return i;
+	}
+
+	return -1;
+}
+
+/* record initiator */
+static void
+cookie_record(cookie_t *in, const u_char *bp2)
+{
+	int i;
+	struct ip *ip;
+	struct sockaddr_in *sin;
+#ifdef INET6
+	struct ip6_hdr *ip6;
+	struct sockaddr_in6 *sin6;
+#endif
+
+	i = cookie_find(in);
+	if (0 <= i) {
+		ninitiator = (i + 1) % MAXINITIATORS;
+		return;
+	}
+
+	ip = (struct ip *)bp2;
+	switch (IP_V(ip)) {
+	case 4:
+		memset(&cookiecache[ninitiator].iaddr, 0,
+			sizeof(cookiecache[ninitiator].iaddr));
+		memset(&cookiecache[ninitiator].raddr, 0,
+			sizeof(cookiecache[ninitiator].raddr));
+
+		sin = (struct sockaddr_in *)&cookiecache[ninitiator].iaddr;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin->sin_len = sizeof(struct sockaddr_in);
+#endif
+		sin->sin_family = AF_INET;
+		memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
+		sin = (struct sockaddr_in *)&cookiecache[ninitiator].raddr;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin->sin_len = sizeof(struct sockaddr_in);
+#endif
+		sin->sin_family = AF_INET;
+		memcpy(&sin->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst));
+		break;
+#ifdef INET6
+	case 6:
+		memset(&cookiecache[ninitiator].iaddr, 0,
+			sizeof(cookiecache[ninitiator].iaddr));
+		memset(&cookiecache[ninitiator].raddr, 0,
+			sizeof(cookiecache[ninitiator].raddr));
+
+		ip6 = (struct ip6_hdr *)bp2;
+		sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].iaddr;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin6->sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		sin6->sin6_family = AF_INET6;
+		memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
+		sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].raddr;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin6->sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		sin6->sin6_family = AF_INET6;
+		memcpy(&sin6->sin6_addr, &ip6->ip6_dst, sizeof(ip6->ip6_dst));
+		break;
+#endif
+	default:
+		return;
+	}
+	memcpy(&cookiecache[ninitiator].initiator, in, sizeof(*in));
+	ninitiator = (ninitiator + 1) % MAXINITIATORS;
+}
+
+#define cookie_isinitiator(x, y)	cookie_sidecheck((x), (y), 1)
+#define cookie_isresponder(x, y)	cookie_sidecheck((x), (y), 0)
+static int
+cookie_sidecheck(int i, const u_char *bp2, int initiator)
+{
+	struct sockaddr_storage ss;
+	struct sockaddr *sa;
+	struct ip *ip;
+	struct sockaddr_in *sin;
+#ifdef INET6
+	struct ip6_hdr *ip6;
+	struct sockaddr_in6 *sin6;
+#endif
+	int salen;
+
+	memset(&ss, 0, sizeof(ss));
+	ip = (struct ip *)bp2;
+	switch (IP_V(ip)) {
+	case 4:
+		sin = (struct sockaddr_in *)&ss;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin->sin_len = sizeof(struct sockaddr_in);
+#endif
+		sin->sin_family = AF_INET;
+		memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
+		break;
+#ifdef INET6
+	case 6:
+		ip6 = (struct ip6_hdr *)bp2;
+		sin6 = (struct sockaddr_in6 *)&ss;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		sin6->sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		sin6->sin6_family = AF_INET6;
+		memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
+		break;
+#endif
+	default:
+		return 0;
+	}
+
+	sa = (struct sockaddr *)&ss;
+	if (initiator) {
+		if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].iaddr)->sa_family)
+			return 0;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		salen = sa->sa_len;
+#else
+#ifdef INET6
+		if (sa->sa_family == AF_INET6)
+			salen = sizeof(struct sockaddr_in6);
+		else
+			salen = sizeof(struct sockaddr);
+#else
+		salen = sizeof(struct sockaddr);
+#endif
+#endif
+		if (memcmp(&ss, &cookiecache[i].iaddr, salen) == 0)
+			return 1;
+	} else {
+		if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].raddr)->sa_family)
+			return 0;
+#ifdef HAVE_SOCKADDR_SA_LEN
+		salen = sa->sa_len;
+#else
+#ifdef INET6
+		if (sa->sa_family == AF_INET6)
+			salen = sizeof(struct sockaddr_in6);
+		else
+			salen = sizeof(struct sockaddr);
+#else
+		salen = sizeof(struct sockaddr);
+#endif
+#endif
+		if (memcmp(&ss, &cookiecache[i].raddr, salen) == 0)
+			return 1;
+	}
+	return 0;
+}
+
+static int
+rawprint(caddr_t loc, size_t len)
+{
+	static u_char *p;
+	size_t i;
+
+	TCHECK2(*loc, len);
+	
+	p = (u_char *)loc;
+	for (i = 0; i < len; i++)
+		printf("%02x", p[i] & 0xff);
+	return 1;
+trunc:
+	return 0;
+}
+
+struct attrmap {
+	const char *type;
+	u_int nvalue;
+	const char *value[30];	/*XXX*/
+};
+
+static const u_char *
+isakmp_attrmap_print(const u_char *p, const u_char *ep,
+	const struct attrmap *map, size_t nmap)
+{
+	u_int16_t *q;
+	int totlen;
+	u_int32_t t, v;
+
+	q = (u_int16_t *)p;
+	if (p[0] & 0x80)
+		totlen = 4;
+	else
+		totlen = 4 + EXTRACT_16BITS(&q[1]);
+	if (ep < p + totlen) {
+		printf("[|attr]");
+		return ep + 1;
+	}
+
+	printf("(");
+	t = EXTRACT_16BITS(&q[0]) & 0x7fff;
+	if (map && t < nmap && map[t].type)
+		printf("type=%s ", map[t].type);
+	else
+		printf("type=#%d ", t);
+	if (p[0] & 0x80) {
+		printf("value=");
+		v = EXTRACT_16BITS(&q[1]);
+		if (map && t < nmap && v < map[t].nvalue && map[t].value[v])
+			printf("%s", map[t].value[v]);
+		else
+			rawprint((caddr_t)&q[1], 2);
+	} else {
+		printf("len=%d value=", EXTRACT_16BITS(&q[1]));
+		rawprint((caddr_t)&p[4], EXTRACT_16BITS(&q[1]));
+	}
+	printf(")");
+	return p + totlen;
+}
+
+static const u_char *
+isakmp_attr_print(const u_char *p, const u_char *ep)
+{
+	u_int16_t *q;
+	int totlen;
+	u_int32_t t;
+
+	q = (u_int16_t *)p;
+	if (p[0] & 0x80)
+		totlen = 4;
+	else
+		totlen = 4 + EXTRACT_16BITS(&q[1]);
+	if (ep < p + totlen) {
+		printf("[|attr]");
+		return ep + 1;
+	}
+
+	printf("(");
+	t = EXTRACT_16BITS(&q[0]) & 0x7fff;
+	printf("type=#%d ", t);
+	if (p[0] & 0x80) {
+		printf("value=");
+		t = q[1];
+		rawprint((caddr_t)&q[1], 2);
+	} else {
+		printf("len=%d value=", EXTRACT_16BITS(&q[1]));
+		rawprint((caddr_t)&p[2], EXTRACT_16BITS(&q[1]));
+	}
+	printf(")");
+	return p + totlen;
+}
+
+static const u_char *
+isakmp_sa_print(const struct isakmp_gen *ext,
+		u_int item_len _U_,
+		const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_,
+		u_int32_t proto0, int depth)
+{
+	const struct isakmp_pl_sa *p;
+	struct isakmp_pl_sa sa;
+	const u_int32_t *q;
+	u_int32_t doi, sit, ident;
+	const u_char *cp, *np;
+	int t;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_SA));
+
+	p = (struct isakmp_pl_sa *)ext;
+	TCHECK(*p);
+	safememcpy(&sa, ext, sizeof(sa));
+	doi = ntohl(sa.doi);
+	sit = ntohl(sa.sit);
+	if (doi != 1) {
+		printf(" doi=%d", doi);
+		printf(" situation=%u", (u_int32_t)ntohl(sa.sit));
+		return (u_char *)(p + 1);
+	}
+
+	printf(" doi=ipsec");
+	q = (u_int32_t *)&sa.sit;
+	printf(" situation=");
+	t = 0;
+	if (sit & 0x01) {
+		printf("identity");
+		t++;
+	}
+	if (sit & 0x02) {
+		printf("%ssecrecy", t ? "+" : "");
+		t++;
+	}
+	if (sit & 0x04)
+		printf("%sintegrity", t ? "+" : "");
+
+	np = (u_char *)ext + sizeof(sa);
+	if (sit != 0x01) {
+		TCHECK2(*(ext + 1), sizeof(ident));
+		safememcpy(&ident, ext + 1, sizeof(ident));
+		printf(" ident=%u", (u_int32_t)ntohl(ident));
+		np += sizeof(ident);
+	}
+
+	ext = (struct isakmp_gen *)np;
+	TCHECK(*ext);
+
+	cp = isakmp_sub_print(ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0,
+		depth);
+
+	return cp;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_SA));
+	return NULL;
+}
+
+static const u_char *
+isakmp_p_print(const struct isakmp_gen *ext, u_int item_len _U_,
+	       const u_char *ep, u_int32_t phase, u_int32_t doi0,
+	       u_int32_t proto0 _U_, int depth)
+{
+	const struct isakmp_pl_p *p;
+	struct isakmp_pl_p prop;
+	const u_char *cp;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_P));
+
+	p = (struct isakmp_pl_p *)ext;
+	TCHECK(*p);
+	safememcpy(&prop, ext, sizeof(prop));
+	printf(" #%d protoid=%s transform=%d",
+		prop.p_no, PROTOIDSTR(prop.prot_id), prop.num_t);
+	if (prop.spi_size) {
+		printf(" spi=");
+		if (!rawprint((caddr_t)(p + 1), prop.spi_size))
+			goto trunc;
+	}
+
+	ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size);
+	TCHECK(*ext);
+
+	cp = isakmp_sub_print(ISAKMP_NPTYPE_T, ext, ep, phase, doi0,
+		prop.prot_id, depth);
+
+	return cp;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_P));
+	return NULL;
+}
+
+static const char *isakmp_p_map[] = {
+	NULL, "ike",
+};
+
+static const char *ah_p_map[] = {
+	NULL, "(reserved)", "md5", "sha", "1des",
+	"sha2-256", "sha2-384", "sha2-512",
+};
+
+static const char *esp_p_map[] = {
+	NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast",
+	"blowfish", "3idea", "1des-iv32", "rc4", "null", "aes"
+};
+
+static const char *ipcomp_p_map[] = {
+	NULL, "oui", "deflate", "lzs",
+};
+
+const struct attrmap ipsec_t_map[] = {
+	{ NULL,	0, { NULL } },
+	{ "lifetype", 3, { NULL, "sec", "kb", }, },
+	{ "life", 0, { NULL } },
+	{ "group desc", 5,	{ NULL, "modp768", "modp1024", "EC2N 2^155",
+				  "EC2N 2^185", }, },
+	{ "enc mode", 3, { NULL, "tunnel", "transport", }, },
+	{ "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, },
+	{ "keylen", 0, { NULL } },
+	{ "rounds", 0, { NULL } },
+	{ "dictsize", 0, { NULL } },
+	{ "privalg", 0, { NULL } },
+};
+
+const struct attrmap oakley_t_map[] = {
+	{ NULL,	0, { NULL } },
+	{ "enc", 8,	{ NULL, "1des", "idea", "blowfish", "rc5",
+		 	  "3des", "cast", "aes", }, },
+	{ "hash", 7,	{ NULL, "md5", "sha1", "tiger",
+			  "sha2-256", "sha2-384", "sha2-512", }, },
+	{ "auth", 6,	{ NULL, "preshared", "dss", "rsa sig", "rsa enc",
+			  "rsa enc revised", }, },
+	{ "group desc", 5,	{ NULL, "modp768", "modp1024", "EC2N 2^155",
+				  "EC2N 2^185", }, },
+	{ "group type", 4,	{ NULL, "MODP", "ECP", "EC2N", }, },
+	{ "group prime", 0, { NULL } },
+	{ "group gen1", 0, { NULL } },
+	{ "group gen2", 0, { NULL } },
+	{ "group curve A", 0, { NULL } },
+	{ "group curve B", 0, { NULL } },
+	{ "lifetype", 3,	{ NULL, "sec", "kb", }, },
+	{ "lifeduration", 0, { NULL } },
+	{ "prf", 0, { NULL } },
+	{ "keylen", 0, { NULL } },
+	{ "field", 0, { NULL } },
+	{ "order", 0, { NULL } },
+};
+
+static const u_char *
+isakmp_t_print(const struct isakmp_gen *ext, u_int item_len,
+	const u_char *ep, u_int32_t phase _U_, u_int32_t doi _U_,
+	u_int32_t proto, int depth _U_)
+{
+	const struct isakmp_pl_t *p;
+	struct isakmp_pl_t t;
+	const u_char *cp;
+	const char *idstr;
+	const struct attrmap *map;
+	size_t nmap;
+	const u_char *ep2;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_T));
+
+	p = (struct isakmp_pl_t *)ext;
+	TCHECK(*p);
+	safememcpy(&t, ext, sizeof(t));
+
+	switch (proto) {
+	case 1:
+		idstr = STR_OR_ID(t.t_id, isakmp_p_map);
+		map = oakley_t_map;
+		nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
+		break;
+	case 2:
+		idstr = STR_OR_ID(t.t_id, ah_p_map);
+		map = ipsec_t_map;
+		nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+		break;
+	case 3:
+		idstr = STR_OR_ID(t.t_id, esp_p_map);
+		map = ipsec_t_map;
+		nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+		break;
+	case 4:
+		idstr = STR_OR_ID(t.t_id, ipcomp_p_map);
+		map = ipsec_t_map;
+		nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+		break;
+	default:
+		idstr = NULL;
+		map = NULL;
+		nmap = 0;
+		break;
+	}
+
+	if (idstr)
+		printf(" #%d id=%s ", t.t_no, idstr);
+	else
+		printf(" #%d id=%d ", t.t_no, t.t_id);
+	cp = (u_char *)(p + 1);
+	ep2 = (u_char *)p + item_len;
+	while (cp < ep && cp < ep2) {
+		if (map && nmap) {
+			cp = isakmp_attrmap_print(cp, (ep < ep2) ? ep : ep2,
+				map, nmap);
+		} else
+			cp = isakmp_attr_print(cp, (ep < ep2) ? ep : ep2);
+	}
+	if (ep < ep2)
+		printf("...");
+	return cp;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_T));
+	return NULL;
+}
+
+static const u_char *
+isakmp_ke_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
+		u_int32_t proto _U_, int depth _U_)
+{
+	struct isakmp_gen e;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_KE));
+
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+	printf(" key len=%d", ntohs(e.len) - 4);
+	if (2 < vflag && 4 < ntohs(e.len)) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + ntohs(e.len);
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_KE));
+	return NULL;
+}
+
+static const u_char *
+isakmp_id_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		const u_char *ep _U_, u_int32_t phase, u_int32_t doi _U_,
+		u_int32_t proto _U_, int depth _U_)
+{
+#define USE_IPSECDOI_IN_PHASE1	1
+	const struct isakmp_pl_id *p;
+	struct isakmp_pl_id id;
+	static const char *idtypestr[] = {
+		"IPv4", "IPv4net", "IPv6", "IPv6net",
+	};
+	static const char *ipsecidtypestr[] = {
+		NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6",
+		"IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN",
+		"keyid",
+	};
+	int len;
+	const u_char *data;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_ID));
+
+	p = (struct isakmp_pl_id *)ext;
+	TCHECK(*p);
+	safememcpy(&id, ext, sizeof(id));
+	if (sizeof(*p) < item_len) {
+		data = (u_char *)(p + 1);
+		len = item_len - sizeof(*p);
+	} else {
+		data = NULL;
+		len = 0;
+	}
+
+#if 0 /*debug*/
+	printf(" [phase=%d doi=%d proto=%d]", phase, doi, proto);
+#endif
+	switch (phase) {
+#ifndef USE_IPSECDOI_IN_PHASE1
+	case 1:
+#endif
+	default:
+		printf(" idtype=%s", STR_OR_ID(id.d.id_type, idtypestr));
+		printf(" doi_data=%u",
+			(u_int32_t)(ntohl(id.d.doi_data) & 0xffffff));
+		break;
+
+#ifdef USE_IPSECDOI_IN_PHASE1
+	case 1:
+#endif
+	case 2:
+	    {
+		const struct ipsecdoi_id *p;
+		struct ipsecdoi_id id;
+		struct protoent *pe;
+
+		p = (struct ipsecdoi_id *)ext;
+		TCHECK(*p);
+		safememcpy(&id, ext, sizeof(id));
+		printf(" idtype=%s", STR_OR_ID(id.type, ipsecidtypestr));
+		if (id.proto_id) {
+#ifndef WIN32
+                        // not supported on android
+			//setprotoent(1);
+#endif /* WIN32 */
+			pe = getprotobynumber(id.proto_id);
+			if (pe)
+				printf(" protoid=%s", pe->p_name);
+#ifndef WIN32
+                        // not supported on android
+			//endprotoent();
+#endif /* WIN32 */
+		} else {
+			/* it DOES NOT mean IPPROTO_IP! */
+			printf(" protoid=%s", "0");
+		}
+		printf(" port=%d", ntohs(id.port));
+		if (!len)
+			break;
+		if (data == NULL)
+			goto trunc;
+		TCHECK2(*data, len);
+		switch (id.type) {
+		case IPSECDOI_ID_IPV4_ADDR:
+			if (len < 4)
+				printf(" len=%d [bad: < 4]", len);
+			else
+				printf(" len=%d %s", len, ipaddr_string(data));
+			len = 0;
+			break;
+		case IPSECDOI_ID_FQDN:
+		case IPSECDOI_ID_USER_FQDN:
+		    {
+			int i;
+			printf(" len=%d ", len);
+			for (i = 0; i < len; i++)
+				safeputchar(data[i]);
+			len = 0;
+			break;
+		    }
+		case IPSECDOI_ID_IPV4_ADDR_SUBNET:
+		    {
+			const u_char *mask;
+			if (len < 8)
+				printf(" len=%d [bad: < 8]", len);
+			else {
+				mask = data + sizeof(struct in_addr);
+				printf(" len=%d %s/%u.%u.%u.%u", len,
+					ipaddr_string(data),
+					mask[0], mask[1], mask[2], mask[3]);
+			}
+			len = 0;
+			break;
+		    }
+#ifdef INET6
+		case IPSECDOI_ID_IPV6_ADDR:
+			if (len < 16)
+				printf(" len=%d [bad: < 16]", len);
+			else
+				printf(" len=%d %s", len, ip6addr_string(data));
+			len = 0;
+			break;
+		case IPSECDOI_ID_IPV6_ADDR_SUBNET:
+		    {
+			const u_int32_t *mask;
+			if (len < 20)
+				printf(" len=%d [bad: < 20]", len);
+			else {
+				mask = (u_int32_t *)(data + sizeof(struct in6_addr));
+				/*XXX*/
+				printf(" len=%d %s/0x%08x%08x%08x%08x", len,
+					ip6addr_string(data),
+					mask[0], mask[1], mask[2], mask[3]);
+			}
+			len = 0;
+			break;
+		    }
+#endif /*INET6*/
+		case IPSECDOI_ID_IPV4_ADDR_RANGE:
+			if (len < 8)
+				printf(" len=%d [bad: < 8]", len);
+			else {
+				printf(" len=%d %s-%s", len,
+					ipaddr_string(data),
+					ipaddr_string(data + sizeof(struct in_addr)));
+			}
+			len = 0;
+			break;
+#ifdef INET6
+		case IPSECDOI_ID_IPV6_ADDR_RANGE:
+			if (len < 32)
+				printf(" len=%d [bad: < 32]", len);
+			else {
+				printf(" len=%d %s-%s", len,
+					ip6addr_string(data),
+					ip6addr_string(data + sizeof(struct in6_addr)));
+			}
+			len = 0;
+			break;
+#endif /*INET6*/
+		case IPSECDOI_ID_DER_ASN1_DN:
+		case IPSECDOI_ID_DER_ASN1_GN:
+		case IPSECDOI_ID_KEY_ID:
+			break;
+		}
+		break;
+	    }
+	}
+	if (data && len) {
+		printf(" len=%d", len);
+		if (2 < vflag) {
+			printf(" ");
+			if (!rawprint((caddr_t)data, len))
+				goto trunc;
+		}
+	}
+	return (u_char *)ext + item_len;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_ID));
+	return NULL;
+}
+
+static const u_char *
+isakmp_cert_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		  const u_char *ep _U_, u_int32_t phase _U_,
+		  u_int32_t doi0 _U_,
+		  u_int32_t proto0 _U_, int depth _U_)
+{
+	const struct isakmp_pl_cert *p;
+	struct isakmp_pl_cert cert;
+	static const char *certstr[] = {
+		"none",	"pkcs7", "pgp", "dns",
+		"x509sign", "x509ke", "kerberos", "crl",
+		"arl", "spki", "x509attr",
+	};
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_CERT));
+
+	p = (struct isakmp_pl_cert *)ext;
+	TCHECK(*p);
+	safememcpy(&cert, ext, sizeof(cert));
+	printf(" len=%d", item_len - 4);
+	printf(" type=%s", STR_OR_ID((cert.encode), certstr));
+	if (2 < vflag && 4 < item_len) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), item_len - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + item_len;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_CERT));
+	return NULL;
+}
+
+static const u_char *
+isakmp_cr_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_,
+		u_int32_t proto0 _U_, int depth _U_)
+{
+	const struct isakmp_pl_cert *p;
+	struct isakmp_pl_cert cert;
+	static const char *certstr[] = {
+		"none",	"pkcs7", "pgp", "dns",
+		"x509sign", "x509ke", "kerberos", "crl",
+		"arl", "spki", "x509attr",
+	};
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_CR));
+
+	p = (struct isakmp_pl_cert *)ext;
+	TCHECK(*p);
+	safememcpy(&cert, ext, sizeof(cert));
+	printf(" len=%d", item_len - 4);
+	printf(" type=%s", STR_OR_ID((cert.encode), certstr));
+	if (2 < vflag && 4 < item_len) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), item_len - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + item_len;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_CR));
+	return NULL;
+}
+
+static const u_char *
+isakmp_hash_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		  const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
+		  u_int32_t proto _U_, int depth _U_)
+{
+	struct isakmp_gen e;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_HASH));
+
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+	printf(" len=%d", ntohs(e.len) - 4);
+	if (2 < vflag && 4 < ntohs(e.len)) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + ntohs(e.len);
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_HASH));
+	return NULL;
+}
+
+static const u_char *
+isakmp_sig_print(const struct isakmp_gen *ext, u_int item_len _U_,
+		 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
+		 u_int32_t proto _U_, int depth _U_)
+{
+	struct isakmp_gen e;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_SIG));
+
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+	printf(" len=%d", ntohs(e.len) - 4);
+	if (2 < vflag && 4 < ntohs(e.len)) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + ntohs(e.len);
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_SIG));
+	return NULL;
+}
+
+static const u_char *
+isakmp_nonce_print(const struct isakmp_gen *ext,
+		   u_int item_len _U_,
+		   const u_char *ep _U_,
+		   u_int32_t phase _U_, u_int32_t doi _U_,
+		   u_int32_t proto _U_, int depth _U_)
+{
+	struct isakmp_gen e;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_NONCE));
+
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+	printf(" n len=%d", ntohs(e.len) - 4);
+	if (2 < vflag && 4 < ntohs(e.len)) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + ntohs(e.len);
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_NONCE));
+	return NULL;
+}
+
+static const u_char *
+isakmp_n_print(const struct isakmp_gen *ext, u_int item_len,
+	const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_,
+	u_int32_t proto0 _U_, int depth)
+{
+	struct isakmp_pl_n *p, n;
+	const u_char *cp;
+	u_char *ep2;
+	u_int32_t doi;
+	u_int32_t proto;
+	static const char *notify_error_str[] = {
+		NULL,				"INVALID-PAYLOAD-TYPE",
+		"DOI-NOT-SUPPORTED",		"SITUATION-NOT-SUPPORTED",
+		"INVALID-COOKIE",		"INVALID-MAJOR-VERSION",
+		"INVALID-MINOR-VERSION",	"INVALID-EXCHANGE-TYPE",
+		"INVALID-FLAGS",		"INVALID-MESSAGE-ID",
+		"INVALID-PROTOCOL-ID",		"INVALID-SPI",
+		"INVALID-TRANSFORM-ID",		"ATTRIBUTES-NOT-SUPPORTED",
+		"NO-PROPOSAL-CHOSEN",		"BAD-PROPOSAL-SYNTAX",
+		"PAYLOAD-MALFORMED",		"INVALID-KEY-INFORMATION",
+		"INVALID-ID-INFORMATION",	"INVALID-CERT-ENCODING",
+		"INVALID-CERTIFICATE",		"CERT-TYPE-UNSUPPORTED",
+		"INVALID-CERT-AUTHORITY",	"INVALID-HASH-INFORMATION",
+		"AUTHENTICATION-FAILED",	"INVALID-SIGNATURE",
+		"ADDRESS-NOTIFICATION",		"NOTIFY-SA-LIFETIME",
+		"CERTIFICATE-UNAVAILABLE",	"UNSUPPORTED-EXCHANGE-TYPE",
+		"UNEQUAL-PAYLOAD-LENGTHS",
+	};
+	static const char *ipsec_notify_error_str[] = {
+		"RESERVED",
+	};
+	static const char *notify_status_str[] = {
+		"CONNECTED",
+	};
+	static const char *ipsec_notify_status_str[] = {
+		"RESPONDER-LIFETIME",		"REPLAY-STATUS",
+		"INITIAL-CONTACT",
+	};
+/* NOTE: these macro must be called with x in proper range */
+
+/* 0 - 8191 */
+#define NOTIFY_ERROR_STR(x) \
+	STR_OR_ID((x), notify_error_str)
+
+/* 8192 - 16383 */
+#define IPSEC_NOTIFY_ERROR_STR(x) \
+	STR_OR_ID((u_int)((x) - 8192), ipsec_notify_error_str)
+
+/* 16384 - 24575 */
+#define NOTIFY_STATUS_STR(x) \
+	STR_OR_ID((u_int)((x) - 16384), notify_status_str)
+
+/* 24576 - 32767 */
+#define IPSEC_NOTIFY_STATUS_STR(x) \
+	STR_OR_ID((u_int)((x) - 24576), ipsec_notify_status_str)
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_N));
+
+	p = (struct isakmp_pl_n *)ext;
+	TCHECK(*p);
+	safememcpy(&n, ext, sizeof(n));
+	doi = ntohl(n.doi);
+	proto = n.prot_id;
+	if (doi != 1) {
+		printf(" doi=%d", doi);
+		printf(" proto=%d", proto);
+		if (ntohs(n.type) < 8192)
+			printf(" type=%s", NOTIFY_ERROR_STR(ntohs(n.type)));
+		else if (ntohs(n.type) < 16384)
+			printf(" type=%s", numstr(ntohs(n.type)));
+		else if (ntohs(n.type) < 24576)
+			printf(" type=%s", NOTIFY_STATUS_STR(ntohs(n.type)));
+		else
+			printf(" type=%s", numstr(ntohs(n.type)));
+		if (n.spi_size) {
+			printf(" spi=");
+			if (!rawprint((caddr_t)(p + 1), n.spi_size))
+				goto trunc;
+		}
+		return (u_char *)(p + 1) + n.spi_size;
+	}
+
+	printf(" doi=ipsec");
+	printf(" proto=%s", PROTOIDSTR(proto));
+	if (ntohs(n.type) < 8192)
+		printf(" type=%s", NOTIFY_ERROR_STR(ntohs(n.type)));
+	else if (ntohs(n.type) < 16384)
+		printf(" type=%s", IPSEC_NOTIFY_ERROR_STR(ntohs(n.type)));
+	else if (ntohs(n.type) < 24576)
+		printf(" type=%s", NOTIFY_STATUS_STR(ntohs(n.type)));
+	else if (ntohs(n.type) < 32768)
+		printf(" type=%s", IPSEC_NOTIFY_STATUS_STR(ntohs(n.type)));
+	else
+		printf(" type=%s", numstr(ntohs(n.type)));
+	if (n.spi_size) {
+		printf(" spi=");
+		if (!rawprint((caddr_t)(p + 1), n.spi_size))
+			goto trunc;
+	}
+
+	cp = (u_char *)(p + 1) + n.spi_size;
+	ep2 = (u_char *)p + item_len;
+
+	if (cp < ep) {
+		printf(" orig=(");
+		switch (ntohs(n.type)) {
+		case IPSECDOI_NTYPE_RESPONDER_LIFETIME:
+		    {
+			const struct attrmap *map = oakley_t_map;
+			size_t nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
+			while (cp < ep && cp < ep2) {
+				cp = isakmp_attrmap_print(cp,
+					(ep < ep2) ? ep : ep2, map, nmap);
+			}
+			break;
+		    }
+		case IPSECDOI_NTYPE_REPLAY_STATUS:
+			printf("replay detection %sabled",
+				(*(u_int32_t *)cp) ? "en" : "dis");
+			break;
+		case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN:
+			if (isakmp_sub_print(ISAKMP_NPTYPE_SA,
+			    (struct isakmp_gen *)cp, ep, phase, doi, proto,
+			    depth) == NULL)
+				return NULL;
+			break;
+		default:
+			/* NULL is dummy */
+			isakmp_print(gndo, cp,
+				     item_len - sizeof(*p) - n.spi_size,
+				     NULL);
+		}
+		printf(")");
+	}
+	return (u_char *)ext + item_len;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_N));
+	return NULL;
+}
+
+static const u_char *
+isakmp_d_print(const struct isakmp_gen *ext, u_int item_len _U_,
+	       const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_,
+	       u_int32_t proto0 _U_, int depth _U_)
+{
+	const struct isakmp_pl_d *p;
+	struct isakmp_pl_d d;
+	const u_int8_t *q;
+	u_int32_t doi;
+	u_int32_t proto;
+	int i;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_D));
+
+	p = (struct isakmp_pl_d *)ext;
+	TCHECK(*p);
+	safememcpy(&d, ext, sizeof(d));
+	doi = ntohl(d.doi);
+	proto = d.prot_id;
+	if (doi != 1) {
+		printf(" doi=%u", doi);
+		printf(" proto=%u", proto);
+	} else {
+		printf(" doi=ipsec");
+		printf(" proto=%s", PROTOIDSTR(proto));
+	}
+	printf(" spilen=%u", d.spi_size);
+	printf(" nspi=%u", ntohs(d.num_spi));
+	printf(" spi=");
+	q = (u_int8_t *)(p + 1);
+	for (i = 0; i < ntohs(d.num_spi); i++) {
+		if (i != 0)
+			printf(",");
+		if (!rawprint((caddr_t)q, d.spi_size))
+			goto trunc;
+		q += d.spi_size;
+	}
+	return q;
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_D));
+	return NULL;
+}
+
+static const u_char *
+isakmp_vid_print(const struct isakmp_gen *ext,
+		 u_int item_len _U_, const u_char *ep _U_,
+		 u_int32_t phase _U_, u_int32_t doi _U_,
+		 u_int32_t proto _U_, int depth _U_)
+{
+	struct isakmp_gen e;
+
+	printf("%s:", NPSTR(ISAKMP_NPTYPE_VID));
+
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+	printf(" len=%d", ntohs(e.len) - 4);
+	if (2 < vflag && 4 < ntohs(e.len)) {
+		printf(" ");
+		if (!rawprint((caddr_t)(ext + 1), ntohs(e.len) - 4))
+			goto trunc;
+	}
+	return (u_char *)ext + ntohs(e.len);
+trunc:
+	printf(" [|%s]", NPSTR(ISAKMP_NPTYPE_VID));
+	return NULL;
+}
+
+static const u_char *
+isakmp_sub0_print(u_char np, const struct isakmp_gen *ext, const u_char *ep,
+	u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth)
+{
+	const u_char *cp;
+	struct isakmp_gen e;
+	u_int item_len;
+
+	cp = (u_char *)ext;
+	TCHECK(*ext);
+	safememcpy(&e, ext, sizeof(e));
+
+	/*
+	 * Since we can't have a payload length of less than 4 bytes,
+	 * we need to bail out here if the generic header is nonsensical
+	 * or truncated, otherwise we could loop forever processing
+	 * zero-length items or otherwise misdissect the packet.
+	 */
+	item_len = ntohs(e.len);
+	if (item_len <= 4)
+		return NULL;
+
+	if (NPFUNC(np)) {
+		/*
+		 * XXX - what if item_len is too short, or too long,
+		 * for this payload type?
+		 */
+		cp = (*npfunc[np])(ext, item_len, ep, phase, doi, proto, depth);
+	} else {
+		printf("%s", NPSTR(np));
+		cp += item_len;
+	}
+
+	return cp;
+trunc:
+	printf(" [|isakmp]");
+	return NULL;
+}
+
+static const u_char *
+isakmp_sub_print(u_char np, const struct isakmp_gen *ext, const u_char *ep,
+	u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth)
+{
+	const u_char *cp;
+	int i;
+	struct isakmp_gen e;
+
+	cp = (const u_char *)ext;
+
+	while (np) {
+		TCHECK(*ext);
+		
+		safememcpy(&e, ext, sizeof(e));
+
+		TCHECK2(*ext, ntohs(e.len));
+
+		depth++;
+		printf("\n");
+		for (i = 0; i < depth; i++)
+			printf("    ");
+		printf("(");
+		cp = isakmp_sub0_print(np, ext, ep, phase, doi, proto, depth);
+		printf(")");
+		depth--;
+
+		if (cp == NULL) {
+			/* Zero-length subitem */
+			return NULL;
+		}
+
+		np = e.np;
+		ext = (struct isakmp_gen *)cp;
+	}
+	return cp;
+trunc:
+	printf(" [|%s]", NPSTR(np));
+	return NULL;
+}
+
+static char *
+numstr(int x)
+{
+	static char buf[20];
+	snprintf(buf, sizeof(buf), "#%d", x);
+	return buf;
+}
+
+/*
+ * some compiler tries to optimize memcpy(), using the alignment constraint
+ * on the argument pointer type.  by using this function, we try to avoid the
+ * optimization.
+ */
+static void
+safememcpy(void *p, const void *q, size_t l)
+{
+	memcpy(p, q, l);
+}
+
+void
+isakmp_print(netdissect_options *ndo,
+	     const u_char *bp, u_int length,
+	     const u_char *bp2)
+{
+	const struct isakmp *p;
+	struct isakmp base;
+	const u_char *ep;
+	u_char np;
+	int i;
+	int phase;
+	int major, minor;
+
+	p = (const struct isakmp *)bp;
+	ep = ndo->ndo_snapend;
+
+	if ((struct isakmp *)ep < p + 1) {
+		printf("[|isakmp]");
+		return;
+	}
+
+	safememcpy(&base, p, sizeof(base));
+
+	printf("isakmp");
+	if (vflag) {
+		major = (base.vers & ISAKMP_VERS_MAJOR)
+				>> ISAKMP_VERS_MAJOR_SHIFT;
+		minor = (base.vers & ISAKMP_VERS_MINOR)
+				>> ISAKMP_VERS_MINOR_SHIFT;
+		printf(" %d.%d", major, minor);
+	}
+
+	if (vflag) {
+		printf(" msgid ");
+		rawprint((caddr_t)&base.msgid, sizeof(base.msgid));
+	}
+
+	if (1 < vflag) {
+		printf(" cookie ");
+		rawprint((caddr_t)&base.i_ck, sizeof(base.i_ck));
+		printf("->");
+		rawprint((caddr_t)&base.r_ck, sizeof(base.r_ck));
+	}
+	printf(":");
+
+	phase = (*(u_int32_t *)base.msgid == 0) ? 1 : 2;
+	if (phase == 1)
+		printf(" phase %d", phase);
+	else
+		printf(" phase %d/others", phase);
+
+	i = cookie_find(&base.i_ck);
+	if (i < 0) {
+		if (iszero((u_char *)&base.r_ck, sizeof(base.r_ck))) {
+			/* the first packet */
+			printf(" I");
+			if (bp2)
+				cookie_record(&base.i_ck, bp2);
+		} else
+			printf(" ?");
+	} else {
+		if (bp2 && cookie_isinitiator(i, bp2))
+			printf(" I");
+		else if (bp2 && cookie_isresponder(i, bp2))
+			printf(" R");
+		else
+			printf(" ?");
+	}
+
+	printf(" %s", ETYPESTR(base.etype));
+	if (base.flags) {
+		printf("[%s%s]", base.flags & ISAKMP_FLAG_E ? "E" : "",
+			base.flags & ISAKMP_FLAG_C ? "C" : "");
+	}
+
+	if (vflag) {
+		const struct isakmp_gen *ext;
+		int nparen;
+
+#define CHECKLEN(p, np) \
+		if (ep < (u_char *)(p)) {				\
+			printf(" [|%s]", NPSTR(np));			\
+			goto done;					\
+		}
+
+		printf(":");
+
+		/* regardless of phase... */
+		if (base.flags & ISAKMP_FLAG_E) {
+			/*
+			 * encrypted, nothing we can do right now.
+			 * we hope to decrypt the packet in the future...
+			 */
+			printf(" [encrypted %s]", NPSTR(base.np));
+			goto done;
+		}
+
+		nparen = 0;
+		CHECKLEN(p + 1, base.np)
+
+		np = base.np;
+		ext = (struct isakmp_gen *)(p + 1);
+		isakmp_sub_print(np, ext, ep, phase, 0, 0, 0);
+	}
+
+done:
+	if (vflag) {
+		if (ntohl(base.len) != length) {
+			printf(" (len mismatch: isakmp %u/ip %u)",
+				(u_int32_t)ntohl(base.len), length);
+		}
+	}
+}
+
+void
+isakmp_rfc3948_print(netdissect_options *ndo,
+		     const u_char *bp, u_int length,
+		     const u_char *bp2)
+{
+	const u_char *ep;
+	ep = ndo->ndo_snapend;
+
+	if(length == 1 && bp[0]==0xff) {
+		ND_PRINT((ndo, "isakmp-nat-keep-alive"));
+		return;
+	}
+
+	if(length < 4) {
+		goto trunc;
+	}
+
+	/*
+	 * see if this is an IKE packet
+	 */
+	if(bp[0]==0 && bp[1]==0 && bp[2]==0 && bp[3]==0) {
+		ND_PRINT((ndo, "NONESP-encap: "));
+		isakmp_print(ndo, bp+4, length-4, bp2);
+		return;
+	}
+
+	/* must be an ESP packet */
+	{
+		int nh, enh, padlen;
+		int advance;
+
+		ND_PRINT((ndo, "UDP-encap: "));
+
+		advance = esp_print(ndo, bp, length, bp2, &enh, &padlen);
+		if(advance <= 0)
+			return;
+
+		bp += advance;
+		length -= advance + padlen;
+		nh = enh & 0xff;
+	     
+		ip_print_inner(ndo, bp, length, nh, bp2);
+		return;
+	}
+
+trunc:
+	printf("[|isakmp]");
+	return;
+}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */