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e9b545322a
freebsd-skq/usr.bin/netstat/inet6.c
shin 70f0bdf681 udp IPv6 support, IPv6/IPv4 tunneling support in kernel, 
packet divert at kernel for IPv6/IPv4 translater daemon

This includes queue related patch submitted by jburkhol@home.com.

Submitted by: queue related patch from jburkhol@home.com
Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
1999-12-07 17:39:16 +00:00

963 lines
19 KiB
C
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/* BSDI inet.c,v 2.3 1995/10/24 02:19:29 prb Exp */
/*
* Copyright (c) 1983, 1988, 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.
*
* $FreeBSD$
*/
#ifndef lint
/*
static char sccsid[] = "@(#)inet6.c 8.4 (Berkeley) 4/20/94";
*/
#endif /* not lint */
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/ioctl.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <net/route.h>
#include <net/if.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet/icmp6.h>
#include <netinet/in_systm.h>
#include <netinet6/in6_pcb.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
#include <netinet6/pim6_var.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
struct socket sockb;
char *inet6name __P((struct in6_addr *));
void inet6print __P((struct in6_addr *, int, char *, int));
static char ntop_buf[INET6_ADDRSTRLEN];
static char *ip6nh[] = {
"hop by hop",
"ICMP",
"IGMP",
"#3",
"IP",
"#5",
"TCP",
"#7",
"#8",
"#9",
"#10",
"#11",
"#12",
"#13",
"#14",
"#15",
"#16",
"UDP",
"#18",
"#19",
"#20",
"#21",
"IDP",
"#23",
"#24",
"#25",
"#26",
"#27",
"#28",
"TP",
"#30",
"#31",
"#32",
"#33",
"#34",
"#35",
"#36",
"#37",
"#38",
"#39",
"#40",
"IP6",
"#42",
"routing",
"fragment",
"#45",
"#46",
"#47",
"#48",
"#49",
"ESP",
"AH",
"#52",
"#53",
"#54",
"#55",
"#56",
"#57",
"ICMP6",
"no next header",
"destination option",
"#61",
"#62",
"#63",
"#64",
"#65",
"#66",
"#67",
"#68",
"#69",
"#70",
"#71",
"#72",
"#73",
"#74",
"#75",
"#76",
"#77",
"#78",
"#79",
"ISOIP",
"#81",
"#82",
"#83",
"#84",
"#85",
"#86",
"#87",
"#88",
"#89",
"#80",
"#91",
"#92",
"#93",
"#94",
"#95",
"#96",
"Ethernet",
"#98",
"#99",
"#100",
"#101",
"#102",
"PIM",
"#104",
"#105",
"#106",
"#107",
"#108",
"#109",
"#110",
"#111",
"#112",
"#113",
"#114",
"#115",
"#116",
"#117",
"#118",
"#119",
"#120",
"#121",
"#122",
"#123",
"#124",
"#125",
"#126",
"#127",
"#128",
"#129",
"#130",
"#131",
"#132",
"#133",
"#134",
"#135",
"#136",
"#137",
"#138",
"#139",
"#140",
"#141",
"#142",
"#143",
"#144",
"#145",
"#146",
"#147",
"#148",
"#149",
"#150",
"#151",
"#152",
"#153",
"#154",
"#155",
"#156",
"#157",
"#158",
"#159",
"#160",
"#161",
"#162",
"#163",
"#164",
"#165",
"#166",
"#167",
"#168",
"#169",
"#170",
"#171",
"#172",
"#173",
"#174",
"#175",
"#176",
"#177",
"#178",
"#179",
"#180",
"#181",
"#182",
"#183",
"#184",
"#185",
"#186",
"#187",
"#188",
"#189",
"#180",
"#191",
"#192",
"#193",
"#194",
"#195",
"#196",
"#197",
"#198",
"#199",
"#200",
"#201",
"#202",
"#203",
"#204",
"#205",
"#206",
"#207",
"#208",
"#209",
"#210",
"#211",
"#212",
"#213",
"#214",
"#215",
"#216",
"#217",
"#218",
"#219",
"#220",
"#221",
"#222",
"#223",
"#224",
"#225",
"#226",
"#227",
"#228",
"#229",
"#230",
"#231",
"#232",
"#233",
"#234",
"#235",
"#236",
"#237",
"#238",
"#239",
"#240",
"#241",
"#242",
"#243",
"#244",
"#245",
"#246",
"#247",
"#248",
"#249",
"#250",
"#251",
"#252",
"#253",
"#254",
"#255",
};
/*
* Dump IP6 statistics structure.
*/
void
ip6_stats(off, name)
u_long off;
char *name;
{
struct ip6stat ip6stat;
int first, i;
if (off == 0)
return;
kread(off, (char *)&ip6stat, sizeof (ip6stat));
printf("%s:\n", name);
#define p(f, m) if (ip6stat.f || sflag <= 1) \
printf(m, ip6stat.f, plural(ip6stat.f))
#define p1a(f, m) if (ip6stat.f || sflag <= 1) \
printf(m, ip6stat.f)
p(ip6s_total, "\t%lu total packet%s received\n");
p1a(ip6s_toosmall, "\t%lu with size smaller than minimum\n");
p1a(ip6s_tooshort, "\t%lu with data size < data length\n");
p1a(ip6s_badoptions, "\t%lu with bad options\n");
p1a(ip6s_badvers, "\t%lu with incorrect version number\n");
p(ip6s_fragments, "\t%lu fragment%s received\n");
p(ip6s_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n");
p(ip6s_fragtimeout, "\t%lu fragment%s dropped after timeout\n");
p(ip6s_fragoverflow, "\t%lu fragment%s that exceeded limit\n");
p(ip6s_reassembled, "\t%lu packet%s reassembled ok\n");
p(ip6s_delivered, "\t%lu packet%s for this host\n");
p(ip6s_forward, "\t%lu packet%s forwarded\n");
p(ip6s_cantforward, "\t%lu packet%s not forwardable\n");
p(ip6s_redirectsent, "\t%lu redirect%s sent\n");
p(ip6s_localout, "\t%lu packet%s sent from this host\n");
p(ip6s_rawout, "\t%lu packet%s sent with fabricated ip header\n");
p(ip6s_odropped, "\t%lu output packet%s dropped due to no bufs, etc.\n");
p(ip6s_noroute, "\t%lu output packet%s discarded due to no route\n");
p(ip6s_fragmented, "\t%lu output datagram%s fragmented\n");
p(ip6s_ofragments, "\t%lu fragment%s created\n");
p(ip6s_cantfrag, "\t%lu datagram%s that can't be fragmented\n");
p(ip6s_badscope, "\t%lu packet%s that violated scope rules\n");
p(ip6s_notmember, "\t%lu multicast packet%s which we don't join\n");
for (first = 1, i = 0; i < 256; i++)
if (ip6stat.ip6s_nxthist[i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %lu\n", ip6nh[i],
ip6stat.ip6s_nxthist[i]);
}
printf("\tMbuf statistics:\n");
printf("\t\t%lu one mbuf\n", ip6stat.ip6s_m1);
for (first = 1, i = 0; i < 32; i++) {
if (ip6stat.ip6s_m2m[i] != 0) {
if (first) {
printf("\t\ttwo or more mbuf:\n");
first = 0;
}
printf("\t\t\t"
#ifdef notyet
"%s"
#else
"if%d"
#endif
"= %ld\n",
#ifdef notyet
if_indextoname(i, ifbuf),
#else
i,
#endif
ip6stat.ip6s_m2m[i]);
}
}
printf("\t\t%lu one ext mbuf\n", ip6stat.ip6s_mext1);
printf("\t\t%lu two or more ext mbuf\n", ip6stat.ip6s_mext2m);
p(ip6s_exthdrtoolong, "\t%lu packet%s whose headers are not continuous\n");
p(ip6s_nogif, "\t%lu tunneling packet%s that can't find gif\n");
p(ip6s_toomanyhdr, "\t%lu packet%s discarded due to too may headers\n");
#undef p
}
/*
* Dump IPv6 per-interface statistics based on RFC 2465.
*/
void
ip6_ifstats(ifname)
char *ifname;
{
struct in6_ifreq ifr;
int s;
#define p(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
printf(m, ifr.ifr_ifru.ifru_stat.f, plural(ifr.ifr_ifru.ifru_stat.f))
#define p_5(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
printf(m, ip6stat.f)
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("Warning: socket(AF_INET6)");
return;
}
strcpy(ifr.ifr_name, ifname);
printf("ip6 on %s:\n", ifr.ifr_name);
if (ioctl(s, SIOCGIFSTAT_IN6, (char *)&ifr) < 0) {
perror("Warning: ioctl(SIOCGIFSTAT_IN6)");
goto end;
}
p(ifs6_in_receive, "\t%qu total input datagram%s\n");
p(ifs6_in_hdrerr, "\t%qu datagram%s with invalid header received\n");
p(ifs6_in_toobig, "\t%qu datagram%s exceeded MTU received\n");
p(ifs6_in_noroute, "\t%qu datagram%s with no route received\n");
p(ifs6_in_addrerr, "\t%qu datagram%s with invalid dst received\n");
p(ifs6_in_protounknown, "\t%qu datagram%s with unknown proto received\n");
p(ifs6_in_truncated, "\t%qu truncated datagram%s received\n");
p(ifs6_in_discard, "\t%qu input datagram%s discarded\n");
p(ifs6_in_deliver,
"\t%qu datagram%s delivered to an upper layer protocol\n");
p(ifs6_out_forward, "\t%qu datagram%s forwarded to this interface\n");
p(ifs6_out_request,
"\t%qu datagram%s sent from an upper layer protocol\n");
p(ifs6_out_discard, "\t%qu total discarded output datagram%s\n");
p(ifs6_out_fragok, "\t%qu output datagram%s fragmented\n");
p(ifs6_out_fragfail, "\t%qu output datagram%s failed on fragment\n");
p(ifs6_out_fragcreat, "\t%qu output datagram%s succeeded on fragment\n");
p(ifs6_reass_reqd, "\t%qu incoming datagram%s fragmented\n");
p(ifs6_reass_ok, "\t%qu datagram%s reassembled\n");
p(ifs6_reass_fail, "\t%qu datagram%s failed on reassembling\n");
p(ifs6_in_mcast, "\t%qu multicast datagram%s received\n");
p(ifs6_out_mcast, "\t%qu multicast datagram%s sent\n");
end:
close(s);
#undef p
#undef p_5
}
static char *icmp6names[] = {
"#0",
"unreach",
"packet too big",
"time exceed",
"parameter problem",
"#5",
"#6",
"#7",
"#8",
"#9",
"#10",
"#11",
"#12",
"#13",
"#14",
"#15",
"#16",
"#17",
"#18",
"#19",
"#20",
"#21",
"#22",
"#23",
"#24",
"#25",
"#26",
"#27",
"#28",
"#29",
"#30",
"#31",
"#32",
"#33",
"#34",
"#35",
"#36",
"#37",
"#38",
"#39",
"#40",
"#41",
"#42",
"#43",
"#44",
"#45",
"#46",
"#47",
"#48",
"#49",
"#50",
"#51",
"#52",
"#53",
"#54",
"#55",
"#56",
"#57",
"#58",
"#59",
"#60",
"#61",
"#62",
"#63",
"#64",
"#65",
"#66",
"#67",
"#68",
"#69",
"#70",
"#71",
"#72",
"#73",
"#74",
"#75",
"#76",
"#77",
"#78",
"#79",
"#80",
"#81",
"#82",
"#83",
"#84",
"#85",
"#86",
"#87",
"#88",
"#89",
"#80",
"#91",
"#92",
"#93",
"#94",
"#95",
"#96",
"#97",
"#98",
"#99",
"#100",
"#101",
"#102",
"#103",
"#104",
"#105",
"#106",
"#107",
"#108",
"#109",
"#110",
"#111",
"#112",
"#113",
"#114",
"#115",
"#116",
"#117",
"#118",
"#119",
"#120",
"#121",
"#122",
"#123",
"#124",
"#125",
"#126",
"#127",
"echo",
"echo reply",
"multicast listener query",
"multicast listener report",
"multicast listener done",
"router solicitation",
"router advertisment",
"neighbor solicitation",
"neighbor advertisment",
"redirect",
"router renumbering",
"node information request",
"node information reply",
"#141",
"#142",
"#143",
"#144",
"#145",
"#146",
"#147",
"#148",
"#149",
"#150",
"#151",
"#152",
"#153",
"#154",
"#155",
"#156",
"#157",
"#158",
"#159",
"#160",
"#161",
"#162",
"#163",
"#164",
"#165",
"#166",
"#167",
"#168",
"#169",
"#170",
"#171",
"#172",
"#173",
"#174",
"#175",
"#176",
"#177",
"#178",
"#179",
"#180",
"#181",
"#182",
"#183",
"#184",
"#185",
"#186",
"#187",
"#188",
"#189",
"#180",
"#191",
"#192",
"#193",
"#194",
"#195",
"#196",
"#197",
"#198",
"#199",
"#200",
"#201",
"#202",
"#203",
"#204",
"#205",
"#206",
"#207",
"#208",
"#209",
"#210",
"#211",
"#212",
"#213",
"#214",
"#215",
"#216",
"#217",
"#218",
"#219",
"#220",
"#221",
"#222",
"#223",
"#224",
"#225",
"#226",
"#227",
"#228",
"#229",
"#230",
"#231",
"#232",
"#233",
"#234",
"#235",
"#236",
"#237",
"#238",
"#239",
"#240",
"#241",
"#242",
"#243",
"#244",
"#245",
"#246",
"#247",
"#248",
"#249",
"#250",
"#251",
"#252",
"#253",
"#254",
"#255",
};
/*
* Dump ICMP6 statistics.
*/
void
icmp6_stats(off, name)
u_long off;
char *name;
{
struct icmp6stat icmp6stat;
register int i, first;
if (off == 0)
return;
kread(off, (char *)&icmp6stat, sizeof (icmp6stat));
printf("%s:\n", name);
#define p(f, m) if (icmp6stat.f || sflag <= 1) \
printf(m, icmp6stat.f, plural(icmp6stat.f))
p(icp6s_error, "\t%lu call%s to icmp_error\n");
p(icp6s_canterror,
"\t%lu error%s not generated because old message was icmp error or so\n");
p(icp6s_toofreq,
"\t%lu error%s not generated because rate limitation\n");
for (first = 1, i = 0; i < 256; i++)
if (icmp6stat.icp6s_outhist[i] != 0) {
if (first) {
printf("\tOutput histogram:\n");
first = 0;
}
printf("\t\t%s: %lu\n", icmp6names[i],
icmp6stat.icp6s_outhist[i]);
}
p(icp6s_badcode, "\t%lu message%s with bad code fields\n");
p(icp6s_tooshort, "\t%lu message%s < minimum length\n");
p(icp6s_checksum, "\t%lu bad checksum%s\n");
p(icp6s_badlen, "\t%lu message%s with bad length\n");
for (first = 1, i = 0; i < ICMP6_MAXTYPE; i++)
if (icmp6stat.icp6s_inhist[i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %lu\n", icmp6names[i],
icmp6stat.icp6s_inhist[i]);
}
p(icp6s_reflect, "\t%lu message response%s generated\n");
#undef p
#undef p_5
}
/*
* Dump ICMPv6 per-interface statistics based on RFC 2466.
*/
void
icmp6_ifstats(ifname)
char *ifname;
{
struct in6_ifreq ifr;
int s;
#define p(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1) \
printf(m, (u_quad_t)ifr.ifr_ifru.ifru_icmp6stat.f, plural(ifr.ifr_ifru.ifru_icmp6stat.f))
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("Warning: socket(AF_INET6)");
return;
}
strcpy(ifr.ifr_name, ifname);
printf("icmp6 on %s:\n", ifr.ifr_name);
if (ioctl(s, SIOCGIFSTAT_ICMP6, (char *)&ifr) < 0) {
perror("Warning: ioctl(SIOCGIFSTAT_ICMP6)");
goto end;
}
p(ifs6_in_msg, "\t%qu total input message%s\n");
p(ifs6_in_error, "\t%qu total input error message%s\n");
p(ifs6_in_dstunreach, "\t%qu input destination unreachable error%s\n");
p(ifs6_in_adminprohib, "\t%qu input administratively prohibited error%s\n");
p(ifs6_in_timeexceed, "\t%qu input time exceeded error%s\n");
p(ifs6_in_paramprob, "\t%qu input parameter problem error%s\n");
p(ifs6_in_pkttoobig, "\t%qu input packet too big error%s\n");
p(ifs6_in_echo, "\t%qu input echo request%s\n");
p(ifs6_in_echoreply, "\t%qu input echo reply%s\n");
p(ifs6_in_routersolicit, "\t%qu input router solicitation%s\n");
p(ifs6_in_routeradvert, "\t%qu input router advertisement%s\n");
p(ifs6_in_neighborsolicit, "\t%qu input neighbor solicitation%s\n");
p(ifs6_in_neighboradvert, "\t%qu input neighbor advertisement%s\n");
p(ifs6_in_redirect, "\t%qu input redirect%s\n");
p(ifs6_in_mldquery, "\t%qu input MLD query%s\n");
p(ifs6_in_mldreport, "\t%qu input MLD report%s\n");
p(ifs6_in_mlddone, "\t%qu input MLD done%s\n");
p(ifs6_out_msg, "\t%qu total output message%s\n");
p(ifs6_out_error, "\t%qu total output error message%s\n");
p(ifs6_out_dstunreach, "\t%qu output destination unreachable error%s\n");
p(ifs6_out_adminprohib, "\t%qu output administratively prohibited error%s\n");
p(ifs6_out_timeexceed, "\t%qu output time exceeded error%s\n");
p(ifs6_out_paramprob, "\t%qu output parameter problem error%s\n");
p(ifs6_out_pkttoobig, "\t%qu output packet too big error%s\n");
p(ifs6_out_echo, "\t%qu output echo request%s\n");
p(ifs6_out_echoreply, "\t%qu output echo reply%s\n");
p(ifs6_out_routersolicit, "\t%qu output router solicitation%s\n");
p(ifs6_out_routeradvert, "\t%qu output router advertisement%s\n");
p(ifs6_out_neighborsolicit, "\t%qu output neighbor solicitation%s\n");
p(ifs6_out_neighboradvert, "\t%qu output neighbor advertisement%s\n");
p(ifs6_out_redirect, "\t%qu output redirect%s\n");
p(ifs6_out_mldquery, "\t%qu output MLD query%s\n");
p(ifs6_out_mldreport, "\t%qu output MLD report%s\n");
p(ifs6_out_mlddone, "\t%qu output MLD done%s\n");
end:
close(s);
#undef p
}
/*
* Dump PIM statistics structure.
*/
void
pim6_stats(off, name)
u_long off;
char *name;
{
struct pim6stat pim6stat;
if (off == 0)
return;
kread(off, (char *)&pim6stat, sizeof(pim6stat));
printf("%s:\n", name);
#define p(f, m) if (pim6stat.f || sflag <= 1) \
printf(m, pim6stat.f, plural(pim6stat.f))
p(pim6s_rcv_total, "\t%u message%s received\n");
p(pim6s_rcv_tooshort, "\t%u message%s received with too few bytes\n");
p(pim6s_rcv_badsum, "\t%u message%s received with bad checksum\n");
p(pim6s_rcv_badversion, "\t%u message%s received with bad version\n");
p(pim6s_rcv_registers, "\t%u register%s received\n");
p(pim6s_rcv_badregisters, "\t%u bad register%s received\n");
p(pim6s_snd_registers, "\t%u register%s sent\n");
#undef p
}
/*
* Pretty print an Internet address (net address + port).
* If the nflag was specified, use numbers instead of names.
*/
#define GETSERVBYPORT6(port, proto, ret)\
{\
if (strcmp((proto), "tcp6") == 0)\
(ret) = getservbyport((int)(port), "tcp");\
else if (strcmp((proto), "udp6") == 0)\
(ret) = getservbyport((int)(port), "udp");\
else\
(ret) = getservbyport((int)(port), (proto));\
};
void
inet6print(in6, port, proto, numeric)
register struct in6_addr *in6;
int port;
char *proto;
int numeric;
{
struct servent *sp = 0;
char line[80], *cp;
int width;
sprintf(line, "%.*s.", lflag ? 39 :
(Aflag && !numeric) ? 12 : 16, inet6name(in6));
cp = index(line, '\0');
if (!numeric && port)
GETSERVBYPORT6(port, proto, sp);
if (sp || port == 0)
sprintf(cp, "%.8s", sp ? sp->s_name : "*");
else
sprintf(cp, "%d", ntohs((u_short)port));
width = lflag ? 45 : Aflag ? 18 : 22;
printf(" %-*.*s", width, width, line);
}
/*
* Construct an Internet address representation.
* If the nflag has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
char *
inet6name(in6p)
struct in6_addr *in6p;
{
register char *cp;
static char line[50];
struct hostent *hp;
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
if (first && !nflag) {
first = 0;
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
(cp = index(domain, '.')))
(void) strcpy(domain, cp + 1);
else
domain[0] = 0;
}
cp = 0;
if (!nflag && !IN6_IS_ADDR_UNSPECIFIED(in6p)) {
hp = gethostbyaddr((char *)in6p, sizeof(*in6p), AF_INET6);
if (hp) {
if ((cp = index(hp->h_name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = hp->h_name;
}
}
if (IN6_IS_ADDR_UNSPECIFIED(in6p))
strcpy(line, "*");
else if (cp)
strcpy(line, cp);
else
sprintf(line, "%s",
inet_ntop(AF_INET6, (void *)in6p, ntop_buf,
sizeof(ntop_buf)));
return (line);
}
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