gifconfig from KAME

2 files changed, 971 insertions, 0 deletions

diff --git a/usr.sbin/gifconfig/gifconfig.8 b/usr.sbin/gifconfig/gifconfig.8
new file mode 100644
index 00000000000..0b3858deade
--- /dev/null
+++ b/usr.sbin/gifconfig/gifconfig.8
@@ -0,0 +1,139 @@
+.\" 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.
+.\"
+.\"     $Id: gifconfig.8,v 1.1 1999/12/21 08:45:40 itojun Exp $
+.\"
+.Dd May 17, 1998
+.Dt GIFCONFIG 8
+.Os KAME
+.\"
+.Sh NAME
+.Nm gifconfig
+.Nd configure generic IP tunnel
+.\"
+.Sh SYNOPSIS
+.Nm
+.Ar interface
+.Op Ar af
+.Op Ar physsrc physdest
+.Nm gifconfig
+.Fl a
+.\"
+.Sh DESCRIPTION
+.Nm
+configures the physical address for the generic IP tunnel 
+inteface, such as "gif0".
+Argument
+.Ar physsrc
+and
+.Ar physdest
+are interpreted as the outer source/destination address for 
+encapsulating IPv4/v6 header.
+Argument
+.Ar af
+specifies the address family for
+.Ar physsrc
+and
+.Ar physdest .
+.Ar Af
+can be
+.Li inet
+or 
+.Li inet6 ,
+and will be treated as
+.Li inet
+if ommitted.
+.Pp
+.Nm
+takes the following optional argument:
+.Bl -tag -width Ds
+.It Fl a
+Display information associated all generic IP tunnel interfaces.
+.El
+.Pp
+Please note that it is very easy to create infinite routing loop,
+when you configure tunnel over same address family
+.Po
+e.g. IPv4-over-IPv4
+.Pc .
+.\"
+.Sh EXAMPLES
+If you would like to configure IPv6 over IPv4
+.Pq aka IPv6 in IPv4
+tunnel between
+.Li 10.1.1.1
+and
+.Li 10.2.3.4 ,
+you should perform the following command:
+.Bd -literal -offset
+# gifconfig gif0 inet 10.1.1.1 10.2.3.4
+.Ed
+.Pp
+.\" To use the
+.\" .Li 0.0.0.0
+.\" feature to establish a tunnel from host1 to host3
+.\" which will encapsulate and carry packets from host2, on host1 do:
+.\" .Bd -literal -offset
+.\" # ifconfig gif0 inet host1  127.0.0.2  # assign an address to gif0
+.\" # gifconfig gif0 inet host1 0.0.0.0    # assign encapsulation addresses
+.\" # route add host2 host3 -ifp gif0:     # encap host2 packets, send to host3
+.\" .Ed
+.\" .Pp
+.\" Note: the
+.\" .Fl ifp
+.\" option to route does not work as documented in
+.\" most versions of FreeBSD.
+.\" .Pp
+.\" On host3 do:
+.\" .Bd -literal -offset
+.\" # ifconfig gif0 inet host3  127.0.0.2  # assign an address to gif0
+.\" # gifconfig gif0 inet host3 0.0.0.0    # assign encapsulation addresses
+.\" .Ed
+.\" .Pp
+.\" Now if you ping host2 from host1, the packets should be encapsulated
+.\" with outer source address = host1 and outer destination address = host3,
+.\" and delivered to host3.
+.\" host3 will decapsulate the packet and deliver it normally to host2.
+.\" .Pp
+This is also possible to use IPv6 as outer proto, by replacing
+.Li inet
+to
+.Li inet6 ,
+and IPv4 addresses to some appropriate IPv6 addresses in above example.
+.\"
+.Sh RETURN VALUES
+The command exits with exit status of 1 on errors, 0 on success.
+.\"
+.Sh SEE ALSO
+.Xr gif 4 ,
+.Xr ifconfig 8
+.Sh HISTORY
+The
+.Nm
+command first appeared in WIDE Hydrangea IPv6 protocol stack kit.
+.\" .Sh BUGS
+.\" (to be written)
diff --git a/usr.sbin/gifconfig/gifconfig.c b/usr.sbin/gifconfig/gifconfig.c
new file mode 100644
index 00000000000..f5bdbb40d65
--- /dev/null
+++ b/usr.sbin/gifconfig/gifconfig.c
@@ -0,0 +1,832 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  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. 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.
+ */
+
+/*
+ * gifconfig, derived from ifconfig
+ *
+ * @(#) Copyright (c) 1983, 1993\n\
+ *	The Regents of the University of California.  All rights reserved.\n
+ *
+ * @(#)ifconfig.c	8.2 (Berkeley) 2/16/94
+ */
+
+/*
+ *  951109 - Andrew@pubnix.net - Changed to iterative buffer growing mechanism
+ *				 for ifconfig -a so all interfaces are queried.
+ *
+ *  960101 - peter@freebsd.org - Blow away the SIOCGIFCONF code and use
+ *				 sysctl() to get the structured interface conf
+ *				 and parse the messages in there. REALLY UGLY!
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/sysctl.h>
+
+#include <net/if.h>
+#if defined(__FreeBSD__) && __FreeBSD__ >= 3
+#include <net/if_var.h>
+#endif /* __FreeBSD__ >= 3 */
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include <sys/protosw.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <nlist.h>
+#include <kvm.h>
+#include <fcntl.h>
+
+struct	ifreq		ifr;
+struct	ifaliasreq	addreq;
+#ifdef INET6
+struct	in6_ifreq	in6_ifr;
+struct	in6_aliasreq	in6_addreq;
+#endif
+
+char	name[32];
+int	flags;
+int	metric;
+int	mtu;
+int	setpsrc = 0;
+int	s;
+kvm_t	*kvmd;
+extern	int errno;
+
+#ifdef INET6
+char ntop_buf[INET6_ADDRSTRLEN];	/*inet_ntop()*/
+#endif
+
+void setifpsrc __P((char *, int));
+void setifpdst __P((char *, int));
+void setifflags __P((char *, int));
+
+
+#define	NEXTARG		0xffffff
+
+struct	cmd {
+	char	*c_name;
+	int	c_parameter;		/* NEXTARG means next argv */
+	void	(*c_func) __P((char *, int));
+} cmds[] = {
+	{ "up",		IFF_UP,		setifflags } ,
+	{ "down",	-IFF_UP,	setifflags },
+	{ 0,		0,		setifpsrc },
+	{ 0,		0,		setifpdst },
+};
+
+/*
+ * XNS support liberally adapted from code written at the University of
+ * Maryland principally by James O'Toole and Chris Torek.
+ */
+int main __P((int, char *[]));
+void status __P((void));
+void phys_status __P((int));
+void in_status __P((int));
+#ifdef INET6
+void in6_status __P((int));
+#endif
+void ether_status __P((int));
+void Perror __P((char *));
+void in_getaddr __P((char *, int));
+#ifdef INET6
+void in6_getaddr __P((char *, int));
+void in6_getprefix __P((char *, int));
+#endif
+void printb __P((char *, unsigned int, char *));
+int prefix __P((void *, int));
+
+char ntop_buf[INET6_ADDRSTRLEN];
+
+/* Known address families */
+struct afswtch {
+	char *af_name;
+	short af_af;
+	void (*af_status) __P((int));
+	void (*af_getaddr) __P((char *, int));
+	void (*af_getprefix) __P((char *, int));
+	u_long af_pifaddr;
+	caddr_t af_addreq;
+	caddr_t af_req;
+} afs[] = {
+#define C(x) ((caddr_t) &x)
+	{ "inet", AF_INET, in_status, in_getaddr, 0,
+	     SIOCSIFPHYADDR, C(addreq), C(ifr) },
+#ifdef INET6
+	{ "inet6", AF_INET6, in6_status, in6_getaddr, in6_getprefix,
+	     SIOCSIFPHYADDR_IN6, C(in6_addreq), C(in6_ifr) },
+#endif
+	{ "ether", AF_INET, ether_status, NULL, NULL },	/* XXX not real!! */
+	{ 0,	0,	    0,		0,	0 }
+};
+
+struct afswtch *afp = NULL;	/*the address family being set or asked about*/
+
+void	rt_xaddrs __P((caddr_t, caddr_t, struct rt_addrinfo *));
+int	ifconfig __P((int argc, char *argv[], int af, struct afswtch *rafp));
+
+
+
+/*
+ * Expand the compacted form of addresses as returned via the
+ * configuration read via sysctl().
+ */
+
+#define ROUNDUP(a) \
+	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+
+void
+rt_xaddrs(cp, cplim, rtinfo)
+	caddr_t cp, cplim;
+	struct rt_addrinfo *rtinfo;
+{
+	struct sockaddr *sa;
+	int i;
+
+	memset(rtinfo->rti_info, 0, sizeof(rtinfo->rti_info));
+	for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
+		if ((rtinfo->rti_addrs & (1 << i)) == 0)
+			continue;
+		rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
+		ADVANCE(cp, sa);
+	}
+}
+
+
+/*
+ * Grunge for new-style sysctl() decoding.. :-(
+ * Apologies to the world for committing gross things like this in 1996..
+ */
+struct if_msghdr *ifm;
+struct ifa_msghdr *ifam;
+struct sockaddr_dl *sdl;
+struct rt_addrinfo info;
+char *buf, *lim, *next;
+
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int af = AF_INET;
+	struct afswtch *rafp = NULL;
+	size_t needed;
+	int mib[6];
+	int all;
+
+	if (argc < 2) {
+		fprintf(stderr, "usage: gifconfig interface %s",
+		    "[ af ] physsrc physdst\n");
+		exit(1);
+	}
+	argc--, argv++;
+	strncpy(name, *argv, sizeof(name));
+	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+	argc--, argv++;
+	if (argc > 0) {
+		for (afp = rafp = afs; rafp->af_name; rafp++)
+			if (strcmp(rafp->af_name, *argv) == 0) {
+				afp = rafp; argc--; argv++;
+				break;
+			}
+		rafp = afp;
+		af = ifr.ifr_addr.sa_family = rafp->af_af;
+	}
+
+	mib[0] = CTL_NET;
+	mib[1] = PF_ROUTE;
+	mib[2] = 0;
+	mib[3] = 0;	/* address family */
+	mib[4] = NET_RT_IFLIST;
+	mib[5] = 0;
+
+	/* if particular family specified, only ask about it */
+	if (afp) {
+		mib[3] = afp->af_af;
+	}
+
+	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+		errx(1, "iflist-sysctl-estimate");
+	if ((buf = malloc(needed)) == NULL)
+		errx(1, "malloc");
+	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+		errx(1, "actual retrieval of interface table");
+	lim = buf + needed;
+
+	all = 0;
+	if (strcmp(name, "-a") == 0)
+		all = 1;	/* All interfaces */
+	else if (strcmp(name, "-au") == 0)
+		all = 2;	/* All IFF_UPinterfaces */
+	else if (strcmp(name, "-ad") == 0)
+		all = 3;	/* All !IFF_UP interfaces */
+
+	for (next = buf; next < lim; next += ifm->ifm_msglen) {
+
+		ifm = (struct if_msghdr *)next;
+
+		/* XXX: Swallow up leftover NEWADDR messages */
+		if (ifm->ifm_type == RTM_NEWADDR)
+			continue;
+
+		if (ifm->ifm_type == RTM_IFINFO) {
+			sdl = (struct sockaddr_dl *)(ifm + 1);
+			flags = ifm->ifm_flags;
+		} else {
+			errx(1, "out of sync parsing NET_RT_IFLIST");
+		}
+
+		switch(all) {
+		case -1:
+		case 0:
+			if (strlen(name) != sdl->sdl_nlen)
+				continue; /* not same len */
+			if (strncmp(name, sdl->sdl_data, sdl->sdl_nlen) != 0)
+				continue; /* not same name */
+			break;
+		case 1:
+			break;	/* always do it */
+		case 2:
+			if ((flags & IFF_UP) == 0)
+				continue; /* not up */
+			break;
+		case 3:
+			if (flags & IFF_UP)
+				continue; /* not down */
+			break;
+		}
+
+		/*
+		 * Let's just do it for gif only
+		 */
+		if (sdl->sdl_type != IFT_GIF) {
+			if (all != 0)
+				continue;
+
+			fprintf(stderr, "gifconfig: %s is not gif.\n",
+				ifr.ifr_name);
+			exit(1);
+		}
+
+		if (all > 0) {
+			strncpy(name, sdl->sdl_data, sdl->sdl_nlen);
+			name[sdl->sdl_nlen] = '\0';
+		}
+
+		if ((s = socket(af, SOCK_DGRAM, 0)) < 0) {
+			perror("gifconfig: socket");
+			exit(1);
+		}
+
+		ifconfig(argc,argv,af,rafp);
+
+		close(s);
+
+		if (all == 0) {
+			all = -1; /* flag it as 'done' */
+			break;
+		}
+	}
+	free(buf);
+
+	if (all == 0)
+		errx(1, "interface %s does not exist", name);
+	
+
+	exit (0);
+}
+
+
+int
+ifconfig(argc, argv, af, rafp)
+	int argc;
+	char *argv[];
+	int af;
+	struct afswtch *rafp;
+{
+
+	af = 0;		/*fool gcc*/
+
+	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
+#ifdef INET6
+	strncpy(in6_ifr.ifr_name, name, sizeof in6_ifr.ifr_name);
+#endif /* INET6 */
+
+	if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
+		perror("ioctl (SIOCGIFMETRIC)");
+	else
+		metric = ifr.ifr_metric;
+
+#if defined(SIOCGIFMTU) && !defined(__OpenBSD__)
+	if (ioctl(s, SIOCGIFMTU, (caddr_t)&ifr) < 0)
+		perror("ioctl (SIOCGIFMTU)");
+	else
+		mtu = ifr.ifr_mtu;
+#else
+	mtu = 0;
+#endif
+
+	if (argc == 0) {
+		status();
+		return(0);
+	}
+
+	while (argc > 0) {
+		register struct cmd *p;
+
+		for (p = cmds; p->c_name; p++)
+			if (strcmp(*argv, p->c_name) == 0)
+				break;
+		if (p->c_name == 0 && setpsrc)
+			p++;	/* got src, do dst */
+		if (p->c_func) {
+			if (p->c_parameter == NEXTARG) {
+				if (argv[1] == NULL)
+					errx(1, "'%s' requires argument",
+					    p->c_name);
+				(*p->c_func)(argv[1], 0);
+				argc--, argv++;
+			} else
+				(*p->c_func)(*argv, p->c_parameter);
+		}
+		argc--, argv++;
+	}
+	if (1 /*newaddr*/) {
+		strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name);
+		if (ioctl(s, rafp->af_pifaddr, rafp->af_addreq) < 0)
+			Perror("ioctl (SIOCSIFPHYADDR)");
+	}
+	return(0);
+}
+#define PSRC	0
+#define PDST	1
+
+/*ARGSUSED*/
+void
+setifpsrc(addr, param)
+	char *addr;
+	int param;
+{
+	param = 0;	/*fool gcc*/
+	(*afp->af_getaddr)(addr, PSRC);
+	setpsrc = 1;
+}
+
+/*ARGSUSED*/
+void
+setifpdst(addr, param)
+	char *addr;
+	int param;
+{
+	param = 0;	/*fool gcc*/
+	(*afp->af_getaddr)(addr, PDST);
+}
+
+void
+setifflags(vname, value)
+	char *vname;
+	int value;
+{
+ 	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
+ 		Perror("ioctl (SIOCGIFFLAGS)");
+ 		exit(1);
+ 	}
+	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
+ 	flags = ifr.ifr_flags;
+
+	if (value < 0) {
+		value = -value;
+		flags &= ~value;
+	} else
+		flags |= value;
+	ifr.ifr_flags = flags;
+	if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
+		Perror(vname);
+}
+
+#define	IFFBITS \
+"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\
+\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST"
+
+/*
+ * Print the status of the interface.  If an address family was
+ * specified, show it and it only; otherwise, show them all.
+ */
+void
+status()
+{
+	struct afswtch *p = NULL;
+	char *mynext;
+	struct if_msghdr *myifm;
+
+	printf("%s: ", name);
+	printb("flags", flags, IFFBITS);
+	if (metric)
+		printf(" metric %d", metric);
+	if (mtu)
+		printf(" mtu %d", mtu);
+	putchar('\n');
+
+	/*
+	 * XXX: Sigh. This is bad, I know.  At this point, we may have
+	 * *zero* RTM_NEWADDR's, so we have to "feel the water" before
+	 * incrementing the loop.  One day, I might feel inspired enough
+	 * to get the top level loop to pass a count down here so we
+	 * dont have to mess with this.  -Peter
+	 */
+	myifm = ifm;
+
+	while (1) {
+
+		mynext = next + ifm->ifm_msglen;
+
+		if (mynext >= lim)
+			break;
+
+		myifm = (struct if_msghdr *)mynext;
+
+		if (myifm->ifm_type != RTM_NEWADDR)
+			break;
+
+		next = mynext;
+
+		ifm = (struct if_msghdr *)next;
+
+		ifam = (struct ifa_msghdr *)myifm;
+		info.rti_addrs = ifam->ifam_addrs;
+
+		/* Expand the compacted addresses */
+		rt_xaddrs((char *)(ifam + 1), ifam->ifam_msglen + (char *)ifam,
+			  &info);
+
+		if (afp) {
+			if (afp->af_af == info.rti_info[RTAX_IFA]->sa_family &&
+			    afp->af_status != ether_status) {
+				p = afp;
+				if (p->af_status != ether_status)
+					(*p->af_status)(1);
+			}
+		} else for (p = afs; p->af_name; p++) {
+			if (p->af_af == info.rti_info[RTAX_IFA]->sa_family &&
+			    p->af_status != ether_status) 
+				(*p->af_status)(0);
+		}
+	}
+	if (afp == NULL || afp->af_status == ether_status)
+		ether_status(0);
+	else if (afp && !p) {
+		warnx("%s has no %s IFA address!", name, afp->af_name);
+	}
+
+	phys_status(0);
+}
+
+void
+phys_status(force)
+	int force;
+{
+	char psrcaddr[256];
+	char pdstaddr[256];
+	char hostname[NI_MAXHOST];
+	u_long srccmd, dstcmd;
+	int flags = NI_NUMERICHOST;
+	struct ifreq *ifrp;
+	char *ver = "";
+
+	force = 0;	/*fool gcc*/
+
+	psrcaddr[0] = pdstaddr[0] = '\0';
+
+#ifdef INET6
+	srccmd = SIOCGIFPSRCADDR_IN6;
+	dstcmd = SIOCGIFPDSTADDR_IN6;
+	ifrp = (struct ifreq *)&in6_ifr;
+#else /* INET6 */
+	ifrp = ifr;
+	srccmd = SIOCGIFPSRCADDR;
+	dstcmd = SIOCGIFPDSTADDR;
+#endif /* INET6 */
+
+	if (0 <= ioctl(s, srccmd, (caddr_t)ifrp)) {
+		getnameinfo(&ifrp->ifr_addr, ifrp->ifr_addr.sa_len,
+			    hostname, NI_MAXHOST, 0, 0, flags);
+#ifdef INET6
+		if (ifrp->ifr_addr.sa_family == AF_INET6)
+			ver = "6";
+#endif /* INET6 */
+		sprintf(psrcaddr, "inet%s %s", ver, hostname);
+	}
+	if (0 <= ioctl(s, dstcmd, (caddr_t)ifrp)) {
+		getnameinfo(&ifrp->ifr_addr, ifrp->ifr_addr.sa_len,
+			    hostname, NI_MAXHOST, 0, 0, flags);
+		sprintf(pdstaddr, "%s", hostname);
+	}
+	printf("\tphysical address %s --> %s\n", psrcaddr, pdstaddr);
+}
+
+void
+in_status(force)
+	int force;
+{
+	struct sockaddr_in *sin, null_sin;
+#if 0
+	char *inet_ntoa();
+#endif
+	
+	memset(&null_sin, 0, sizeof(null_sin));
+
+	sin = (struct sockaddr_in *)info.rti_info[RTAX_IFA];
+	if (!sin || sin->sin_family != AF_INET) {
+		if (!force)
+			return;
+		/* warnx("%s has no AF_INET IFA address!", name); */
+		sin = &null_sin;
+	}
+	printf("\tinet %s ", inet_ntoa(sin->sin_addr));
+
+	if (flags & IFF_POINTOPOINT) {
+		/* note RTAX_BRD overlap with IFF_BROADCAST */
+		sin = (struct sockaddr_in *)info.rti_info[RTAX_BRD];
+		if (!sin)
+			sin = &null_sin;
+		printf("--> %s ", inet_ntoa(sin->sin_addr));
+	}
+
+	sin = (struct sockaddr_in *)info.rti_info[RTAX_NETMASK];
+	if (!sin)
+		sin = &null_sin;
+	printf("netmask 0x%x ", (u_int32_t)ntohl(sin->sin_addr.s_addr));
+
+	if (flags & IFF_BROADCAST) {
+		/* note RTAX_BRD overlap with IFF_POINTOPOINT */
+		sin = (struct sockaddr_in *)info.rti_info[RTAX_BRD];
+		if (sin && sin->sin_addr.s_addr != 0)
+			printf("broadcast %s", inet_ntoa(sin->sin_addr));
+	}
+	putchar('\n');
+}
+
+#ifdef INET6
+void
+in6_status(force)
+	int force;
+{
+	struct sockaddr_in6 *sin, null_sin;
+#if 0
+	char *inet_ntop();
+#endif
+	
+
+	memset(&null_sin, 0, sizeof(null_sin));
+
+	sin = (struct sockaddr_in6 *)info.rti_info[RTAX_IFA];
+	if (!sin || sin->sin6_family != AF_INET6) {
+		if (!force)
+			return;
+		/* warnx("%s has no AF_INET6 IFA address!", name); */
+		sin = &null_sin;
+	}
+	printf("\tinet6 %s ", inet_ntop(AF_INET6, &sin->sin6_addr,
+				ntop_buf, sizeof(ntop_buf)));
+
+	if (flags & IFF_POINTOPOINT) {
+		/* note RTAX_BRD overlap with IFF_BROADCAST */
+		sin = (struct sockaddr_in6 *)info.rti_info[RTAX_BRD];
+		/*
+		 * some of ther interfaces do not have valid destination
+		 * address.
+		 */
+		if (sin->sin6_family == AF_INET6) {
+			if (!sin)
+				sin = &null_sin;
+			printf("--> %s ", inet_ntop(AF_INET6, &sin->sin6_addr,
+						ntop_buf, sizeof(ntop_buf)));
+		}
+	}
+
+	sin = (struct sockaddr_in6 *)info.rti_info[RTAX_NETMASK];
+	if (!sin)
+		sin = &null_sin;
+	printf(" prefixlen %d ", prefix(&sin->sin6_addr,
+		sizeof(struct in6_addr)));
+
+	putchar('\n');
+}
+#endif /*INET6*/
+
+/*ARGSUSED*/
+void
+ether_status(dummy)
+	int dummy;
+{
+	char *cp;
+	int n;
+
+	dummy = 0;	/*fool gcc*/
+
+	cp = (char *)LLADDR(sdl);
+	if ((n = sdl->sdl_alen) > 0) {
+		if (sdl->sdl_type == IFT_ETHER)
+			printf ("\tether ");
+		else
+			printf ("\tlladdr ");
+             	while (--n >= 0)
+			printf("%02x%c",*cp++ & 0xff, n>0? ':' : ' ');
+		putchar('\n');
+	}
+}
+
+void
+Perror(cmd)
+	char *cmd;
+{
+	extern int errno;
+
+	switch (errno) {
+
+	case ENXIO:
+		errx(1, "%s: no such interface", cmd);
+		break;
+
+	case EPERM:
+		errx(1, "%s: permission denied", cmd);
+		break;
+
+	default:
+		err(1, "%s", cmd);
+	}
+}
+
+#define SIN(x) ((struct sockaddr_in *) &(x))
+struct sockaddr_in *sintab[] = {
+SIN(addreq.ifra_addr), SIN(addreq.ifra_dstaddr)};
+
+void
+in_getaddr(s, which)
+	char *s;
+	int which;
+{
+	register struct sockaddr_in *sin = sintab[which];
+	struct hostent *hp;
+	struct netent *np;
+
+	sin->sin_len = sizeof(*sin);
+	sin->sin_family = AF_INET;
+
+	if (inet_aton(s, &sin->sin_addr))
+		;
+	else if ((hp = gethostbyname(s)) != NULL)
+		bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length);
+	else if ((np = getnetbyname(s)) != NULL)
+		sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
+	else
+		errx(1, "%s: bad value", s);
+}
+
+#ifdef INET6
+#define SIN6(x) ((struct sockaddr_in6 *) &(x))
+struct sockaddr_in6 *sin6tab[] = {
+SIN6(in6_addreq.ifra_addr), SIN6(in6_addreq.ifra_dstaddr)};
+
+void
+in6_getaddr(s, which)
+	char *s;
+	int which;
+{
+	register struct sockaddr_in6 *sin = sin6tab[which];
+
+	sin->sin6_len = sizeof(*sin);
+	sin->sin6_family = AF_INET6;
+
+        if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
+		errx(1, "%s: bad value", s);
+}
+
+void
+in6_getprefix(plen, which)
+	char *plen;
+	int which;
+{
+	register struct sockaddr_in6 *sin = sin6tab[which];
+	register u_char *cp;
+	int len = atoi(plen);
+
+	if ((len < 0) || (len > 128))
+		errx(1, "%s: bad value", plen);
+	sin->sin6_len = sizeof(*sin);
+	sin->sin6_family = AF_INET6;
+	if ((len == 0) || (len == 128)) {
+		memset(&sin->sin6_addr, -1, sizeof(struct in6_addr));
+		return;
+	}
+	for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
+		*cp++ = -1;
+	*cp = (-1) << (8 - len);
+}
+#endif
+
+/*
+ * Print a value a la the %b format of the kernel's printf
+ */
+void
+printb(s, v, bits)
+	char *s;
+	register unsigned int v;
+	register char *bits;
+{
+	register int i, any = 0;
+	register char c;
+
+	if (bits && *bits == 8)
+		printf("%s=%o", s, v & 0xffff);
+	else
+		printf("%s=%x", s, v & 0xffff);
+	bits++;
+	if (bits) {
+		putchar('<');
+		while ((i = *bits++) != 0) {
+			if ((v & (1 << (i-1))) != 0) {
+				if (any)
+					putchar(',');
+				any = 1;
+				for (; (c = *bits) > 32; bits++)
+					putchar(c);
+			} else
+				for (; *bits > 32; bits++)
+					;
+		}
+		putchar('>');
+	}
+}
+
+#ifdef INET6
+int
+prefix(val, size)
+        void *val;
+        int size;
+{
+        register u_char *name = (u_char *)val;
+        register int byte, bit, plen = 0;
+
+        for (byte = 0; byte < size; byte++, plen += 8)
+                if (name[byte] != 0xff)
+                        break;
+	if (byte == size)
+		return (plen);
+	for (bit = 7; bit != 0; bit--, plen++)
+                if (!(name[byte] & (1 << bit)))
+                        break;
+        for (; bit != 0; bit--)
+                if (name[byte] & (1 << bit))
+                        return(0);
+        byte++;
+        for (; byte < size; byte++)
+                if (name[byte])
+                        return(0);
+        return (plen);
+}
+#endif /*INET6*/