(Logical change 1.3)

1 files changed, 1410 insertions, 0 deletions

diff --git a/ip/iproute.c b/ip/iproute.c
index e69de29b..404f8e0e 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -0,0 +1,1410 @@
+/*
+ * iproute.c		"ip route".
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ *
+ * Changes:
+ *
+ * Rani Assaf <rani@magic.metawire.com> 980929:	resolve addresses
+ * Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <arpa/inet.h>
+#include <linux/in_route.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+#ifndef RTAX_RTTVAR
+#define RTAX_RTTVAR RTAX_HOPS
+#endif
+
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
+	fprintf(stderr, "       ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
+	fprintf(stderr, "                            [ oif STRING ]  [ tos TOS ]\n");
+	fprintf(stderr, "       ip route { add | del | change | append | replace | monitor } ROUTE\n");
+	fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
+	fprintf(stderr, "            [ table TABLE_ID ] [ proto RTPROTO ]\n");
+	fprintf(stderr, "            [ type TYPE ] [ scope SCOPE ]\n");
+	fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
+	fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
+	fprintf(stderr, "             [ table TABLE_ID ] [ proto RTPROTO ]\n");
+	fprintf(stderr, "             [ scope SCOPE ] [ metric METRIC ]\n");
+	fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
+	fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
+	fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
+	fprintf(stderr, "           [ rtt NUMBER ] [ rttvar NUMBER ]\n");
+	fprintf(stderr, "           [ window NUMBER] [ cwnd NUMBER ] [ ssthresh REALM ]\n");
+	fprintf(stderr, "           [ realms REALM ]\n");
+	fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
+	fprintf(stderr, "          unreachable | prohibit | blackhole | nat ]\n");
+	fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
+	fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
+	fprintf(stderr, "FLAGS := [ equalize ]\n");
+	fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
+	fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
+	exit(-1);
+}
+
+
+static struct
+{
+	int tb;
+	int flushed;
+	char *flushb;
+	int flushp;
+	int flushe;
+	struct rtnl_handle *rth;
+	int protocol, protocolmask;
+	int scope, scopemask;
+	int type, typemask;
+	int tos, tosmask;
+	int iif, iifmask;
+	int oif, oifmask;
+	int realm, realmmask;
+	inet_prefix rprefsrc;
+	inet_prefix rvia;
+	inet_prefix rdst;
+	inet_prefix mdst;
+	inet_prefix rsrc;
+	inet_prefix msrc;
+} filter;
+
+static int flush_update(void)
+{
+	if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
+		perror("Failed to send flush request\n");
+		return -1;
+	}
+	filter.flushp = 0;
+	return 0;
+}
+
+int print_route(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+	FILE *fp = (FILE*)arg;
+	struct rtmsg *r = NLMSG_DATA(n);
+	int len = n->nlmsg_len;
+	struct rtattr * tb[RTA_MAX+1];
+	char abuf[256];
+	inet_prefix dst;
+	inet_prefix src;
+	inet_prefix prefsrc;
+	inet_prefix via;
+	int host_len = -1;
+	SPRINT_BUF(b1);
+	
+
+	if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
+		fprintf(stderr, "Not a route: %08x %08x %08x\n",
+			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+		return 0;
+	}
+	if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
+		return 0;
+	len -= NLMSG_LENGTH(sizeof(*r));
+	if (len < 0) {
+		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+		return -1;
+	}
+
+	if (r->rtm_family == AF_INET6)
+		host_len = 128;
+	else if (r->rtm_family == AF_INET)
+		host_len = 32;
+	else if (r->rtm_family == AF_DECnet)
+		host_len = 16;
+	else if (r->rtm_family == AF_IPX)
+		host_len = 80;
+
+	if (r->rtm_family == AF_INET6) {
+		if (filter.tb) {
+			if (filter.tb < 0) {
+				if (!(r->rtm_flags&RTM_F_CLONED))
+					return 0;
+			} else {
+				if (r->rtm_flags&RTM_F_CLONED)
+					return 0;
+				if (filter.tb == RT_TABLE_LOCAL) {
+					if (r->rtm_type != RTN_LOCAL)
+						return 0;
+				} else if (filter.tb == RT_TABLE_MAIN) {
+					if (r->rtm_type == RTN_LOCAL)
+						return 0;
+				} else {
+					return 0;
+				}
+			}
+		}
+	} else {
+		if (filter.tb > 0 && filter.tb != r->rtm_table)
+			return 0;
+	}
+	if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
+		return 0;
+	if ((filter.scope^r->rtm_scope)&filter.scopemask)
+		return 0;
+	if ((filter.type^r->rtm_type)&filter.typemask)
+		return 0;
+	if ((filter.tos^r->rtm_tos)&filter.tosmask)
+		return 0;
+	if (filter.rdst.family &&
+	    (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
+		return 0;
+	if (filter.mdst.family &&
+	    (r->rtm_family != filter.mdst.family ||
+	     (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
+		return 0;
+	if (filter.rsrc.family &&
+	    (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
+		return 0;
+	if (filter.msrc.family &&
+	    (r->rtm_family != filter.msrc.family ||
+	     (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
+		return 0;
+	if (filter.rvia.family && r->rtm_family != filter.rvia.family)
+		return 0;
+	if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
+		return 0;
+
+
+	memset(tb, 0, sizeof(tb));
+	parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+
+	memset(&dst, 0, sizeof(dst));
+	dst.family = r->rtm_family;
+	if (tb[RTA_DST])
+		memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
+	if (filter.rsrc.family || filter.msrc.family) {
+		memset(&src, 0, sizeof(src));
+		src.family = r->rtm_family;
+		if (tb[RTA_SRC])
+			memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
+	}
+	if (filter.rvia.bitlen>0) {
+		memset(&via, 0, sizeof(via));
+		via.family = r->rtm_family;
+		if (tb[RTA_GATEWAY])
+			memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len);
+	}
+	if (filter.rprefsrc.bitlen>0) {
+		memset(&prefsrc, 0, sizeof(prefsrc));
+		prefsrc.family = r->rtm_family;
+		if (tb[RTA_PREFSRC])
+			memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len);
+	}
+
+	if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
+		return 0;
+	if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
+	    inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
+		return 0;
+
+	if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
+		return 0;
+	if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
+	    inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
+		return 0;
+
+	if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
+		return 0;
+	if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
+		return 0;
+	if (filter.realmmask) {
+		__u32 realms = 0;
+		if (tb[RTA_FLOW])
+			realms = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
+		if ((realms^filter.realm)&filter.realmmask)
+			return 0;
+	}
+	if (filter.iifmask) {
+		int iif = 0;
+		if (tb[RTA_IIF])
+			iif = *(int*)RTA_DATA(tb[RTA_IIF]);
+		if ((iif^filter.iif)&filter.iifmask)
+			return 0;
+	}
+	if (filter.oifmask) {
+		int oif = 0;
+		if (tb[RTA_OIF])
+			oif = *(int*)RTA_DATA(tb[RTA_OIF]);
+		if ((oif^filter.oif)&filter.oifmask)
+			return 0;
+	}
+	if (filter.flushb && 
+	    r->rtm_family == AF_INET6 &&
+	    r->rtm_dst_len == 0 &&
+	    r->rtm_type == RTN_UNREACHABLE &&
+	    tb[RTA_PRIORITY] &&
+	    *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
+		return 0;
+
+	if (filter.flushb) {
+		struct nlmsghdr *fn;
+		if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+			if (flush_update())
+				return -1;
+		}
+		fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+		memcpy(fn, n, n->nlmsg_len);
+		fn->nlmsg_type = RTM_DELROUTE;
+		fn->nlmsg_flags = NLM_F_REQUEST;
+		fn->nlmsg_seq = ++filter.rth->seq;
+		filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
+		filter.flushed++;
+		if (show_stats < 2)
+			return 0;
+	}
+
+	if (n->nlmsg_type == RTM_DELROUTE)
+		fprintf(fp, "Deleted ");
+	if (r->rtm_type != RTN_UNICAST && !filter.type)
+		fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
+
+	if (tb[RTA_DST]) {
+		if (r->rtm_dst_len != host_len) {
+			fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
+							 RTA_PAYLOAD(tb[RTA_DST]),
+							 RTA_DATA(tb[RTA_DST]),
+							 abuf, sizeof(abuf)),
+				r->rtm_dst_len
+				);
+		} else {
+			fprintf(fp, "%s ", format_host(r->rtm_family,
+						       RTA_PAYLOAD(tb[RTA_DST]),
+						       RTA_DATA(tb[RTA_DST]),
+						       abuf, sizeof(abuf))
+				);
+		}
+	} else if (r->rtm_dst_len) {
+		fprintf(fp, "0/%d ", r->rtm_dst_len);
+	} else {
+		fprintf(fp, "default ");
+	}
+	if (tb[RTA_SRC]) {
+		if (r->rtm_src_len != host_len) {
+			fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
+							 RTA_PAYLOAD(tb[RTA_SRC]),
+							 RTA_DATA(tb[RTA_SRC]),
+							 abuf, sizeof(abuf)),
+				r->rtm_src_len
+				);
+		} else {
+			fprintf(fp, "from %s ", format_host(r->rtm_family,
+						       RTA_PAYLOAD(tb[RTA_SRC]),
+						       RTA_DATA(tb[RTA_SRC]),
+						       abuf, sizeof(abuf))
+				);
+		}
+	} else if (r->rtm_src_len) {
+		fprintf(fp, "from 0/%u ", r->rtm_src_len);
+	}
+	if (r->rtm_tos && filter.tosmask != -1) {
+		SPRINT_BUF(b1);
+		fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
+	}
+	if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
+		fprintf(fp, "via %s ", 
+			format_host(r->rtm_family,
+				    RTA_PAYLOAD(tb[RTA_GATEWAY]),
+				    RTA_DATA(tb[RTA_GATEWAY]),
+				    abuf, sizeof(abuf)));
+	}
+	if (tb[RTA_OIF] && filter.oifmask != -1)
+		fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
+
+	if (!(r->rtm_flags&RTM_F_CLONED)) {
+		if (r->rtm_table != RT_TABLE_MAIN && !filter.tb)
+			fprintf(fp, " table %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1)));
+		if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
+			fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
+		if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
+			fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
+	}
+	if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
+		/* Do not use format_host(). It is our local addr
+		   and symbolic name will not be useful.
+		 */
+		fprintf(fp, " src %s ", 
+			rt_addr_n2a(r->rtm_family,
+				    RTA_PAYLOAD(tb[RTA_PREFSRC]),
+				    RTA_DATA(tb[RTA_PREFSRC]),
+				    abuf, sizeof(abuf)));
+	}
+	if (tb[RTA_PRIORITY])
+		fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
+	if (r->rtm_flags & RTNH_F_DEAD)
+		fprintf(fp, "dead ");
+	if (r->rtm_flags & RTNH_F_ONLINK)
+		fprintf(fp, "onlink ");
+	if (r->rtm_flags & RTNH_F_PERVASIVE)
+		fprintf(fp, "pervasive ");
+	if (r->rtm_flags & RTM_F_EQUALIZE)
+		fprintf(fp, "equalize ");
+	if (r->rtm_flags & RTM_F_NOTIFY)
+		fprintf(fp, "notify ");
+
+	if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
+		__u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
+		__u32 from = to>>16;
+		to &= 0xFFFF;
+		fprintf(fp, "realm%s ", from ? "s" : "");
+		if (from) {
+			fprintf(fp, "%s/",
+				rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
+		}
+		fprintf(fp, "%s ",
+			rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
+	}
+	if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
+		__u32 flags = r->rtm_flags&~0xFFFF;
+		int first = 1;
+
+		fprintf(fp, "%s    cache ", _SL_);
+
+#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
+  flags &= ~RTCF_##fl; \
+  fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
+  first = 0; }
+		PRTFL(LOCAL, "local");
+		PRTFL(REJECT, "reject");
+		PRTFL(MULTICAST, "mc");
+		PRTFL(BROADCAST, "brd");
+		PRTFL(DNAT, "dst-nat");
+		PRTFL(SNAT, "src-nat");
+		PRTFL(MASQ, "masq");
+		PRTFL(DIRECTDST, "dst-direct");
+		PRTFL(DIRECTSRC, "src-direct");
+		PRTFL(REDIRECTED, "redirected");
+		PRTFL(DOREDIRECT, "redirect");
+		PRTFL(FAST, "fastroute");
+		PRTFL(NOTIFY, "notify");
+		PRTFL(TPROXY, "proxy");
+#ifdef RTCF_EQUALIZE
+		PRTFL(EQUALIZE, "equalize");
+#endif
+		if (flags)
+			fprintf(fp, "%s%x> ", first ? "<" : "", flags);
+		if (tb[RTA_CACHEINFO]) {
+			struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
+			static int hz;
+			if (!hz)
+				hz = get_hz();
+			if (ci->rta_expires != 0)
+				fprintf(fp, " expires %dsec", ci->rta_expires/hz);
+			if (ci->rta_error != 0)
+				fprintf(fp, " error %d", ci->rta_error);
+			if (show_stats) {
+				if (ci->rta_clntref)
+					fprintf(fp, " users %d", ci->rta_clntref);
+				if (ci->rta_used != 0)
+					fprintf(fp, " used %d", ci->rta_used);
+				if (ci->rta_lastuse != 0)
+					fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
+			}
+#ifdef RTNETLINK_HAVE_PEERINFO
+			if (ci->rta_id)
+				fprintf(fp, " ipid 0x%04x", ci->rta_id);
+			if (ci->rta_ts || ci->rta_tsage)
+				fprintf(fp, " ts 0x%x tsage %dsec", ci->rta_ts, ci->rta_tsage);
+#endif
+		}
+	} else if (r->rtm_family == AF_INET6) {
+		struct rta_cacheinfo *ci = NULL;
+		if (tb[RTA_CACHEINFO])
+			ci = RTA_DATA(tb[RTA_CACHEINFO]);
+		if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
+			static int hz;
+			if (!hz)
+				hz = get_hz();
+			if (r->rtm_flags & RTM_F_CLONED)
+				fprintf(fp, "%s    cache ", _SL_);
+			if (ci->rta_expires)
+				fprintf(fp, " expires %dsec", ci->rta_expires/hz);
+			if (ci->rta_error != 0)
+				fprintf(fp, " error %d", ci->rta_error);
+			if (show_stats) {
+				if (ci->rta_clntref)
+					fprintf(fp, " users %d", ci->rta_clntref);
+				if (ci->rta_used != 0)
+					fprintf(fp, " used %d", ci->rta_used);
+				if (ci->rta_lastuse != 0)
+					fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
+			}
+		} else if (ci) {
+			if (ci->rta_error != 0)
+				fprintf(fp, " error %d", ci->rta_error);
+		}
+	}
+	if (tb[RTA_METRICS]) {
+		int i;
+		unsigned mxlock = 0;
+		struct rtattr *mxrta[RTAX_MAX+1];
+
+		memset(mxrta, 0, sizeof(mxrta));
+
+		parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
+			    RTA_PAYLOAD(tb[RTA_METRICS]));
+		if (mxrta[RTAX_LOCK])
+			mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
+
+		for (i=2; i<=RTAX_MAX; i++) {
+			static char *mx_names[] = 
+			{
+				"mtu",
+				"window",
+				"rtt",
+				"rttvar",
+				"ssthresh",
+				"cwnd",
+				"advmss",
+				"reordering",
+			};
+			static int hz;
+			if (mxrta[i] == NULL)
+				continue;
+			if (!hz)
+				hz = get_hz();
+			if (i-2 < sizeof(mx_names)/sizeof(char*))
+				fprintf(fp, " %s", mx_names[i-2]);
+			else
+				fprintf(fp, " metric%d", i);
+			if (mxlock & (1<<i))
+				fprintf(fp, " lock");
+
+			if (i != RTAX_RTT && i != RTAX_RTTVAR)
+				fprintf(fp, " %u", *(unsigned*)RTA_DATA(mxrta[i]));
+			else {
+				unsigned val = *(unsigned*)RTA_DATA(mxrta[i]);
+
+				val *= 1000;
+				if (i == RTAX_RTT)
+					val /= 8;
+				else
+					val /= 4;
+				if (val >= hz)
+					fprintf(fp, " %ums", val/hz);
+				else
+					fprintf(fp, " %.2fms", (float)val/hz);
+			}
+		}
+	}
+	if (tb[RTA_IIF] && filter.iifmask != -1) {
+		fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
+	}
+	if (tb[RTA_MULTIPATH]) {
+		struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
+		int first = 0;
+
+		len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
+
+		for (;;) {
+			if (len < sizeof(*nh))
+				break;
+			if (nh->rtnh_len > len)
+				break;
+			if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
+				if (first)
+					fprintf(fp, " Oifs:");
+				else
+					fprintf(fp, " ");
+			} else
+				fprintf(fp, "%s\tnexthop", _SL_);
+			if (nh->rtnh_len > sizeof(*nh)) {
+				memset(tb, 0, sizeof(tb));
+				parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
+				if (tb[RTA_GATEWAY]) {
+					fprintf(fp, " via %s ", 
+						format_host(r->rtm_family,
+							    RTA_PAYLOAD(tb[RTA_GATEWAY]),
+							    RTA_DATA(tb[RTA_GATEWAY]),
+							    abuf, sizeof(abuf)));
+				}
+			}
+			if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
+				fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
+				if (nh->rtnh_hops != 1)
+					fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
+			} else {
+				fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
+				fprintf(fp, " weight %d", nh->rtnh_hops+1);
+			}
+			if (nh->rtnh_flags & RTNH_F_DEAD)
+				fprintf(fp, " dead");
+			if (nh->rtnh_flags & RTNH_F_ONLINK)
+				fprintf(fp, " onlink");
+			if (nh->rtnh_flags & RTNH_F_PERVASIVE)
+				fprintf(fp, " pervasive");
+			len -= NLMSG_ALIGN(nh->rtnh_len);
+			nh = RTNH_NEXT(nh);
+		}
+	}
+	fprintf(fp, "\n");
+	fflush(fp);
+	return 0;
+}
+
+
+int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+
+	while (++argv, --argc > 0) {
+		if (strcmp(*argv, "via") == 0) {
+			NEXT_ARG();
+			rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
+			rtnh->rtnh_len += sizeof(struct rtattr) + 4;
+		} else if (strcmp(*argv, "dev") == 0) {
+			NEXT_ARG();
+			if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
+				exit(1);
+			}
+		} else if (strcmp(*argv, "weight") == 0) {
+			unsigned w;
+			NEXT_ARG();
+			if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
+				invarg("\"weight\" is invalid\n", *argv);
+			rtnh->rtnh_hops = w - 1;
+		} else if (strcmp(*argv, "onlink") == 0) {
+			rtnh->rtnh_flags |= RTNH_F_ONLINK;
+		} else
+			break;
+	}
+	*argcp = argc;
+	*argvp = argv;
+	return 0;
+}
+
+int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
+{
+	char buf[1024];
+	struct rtattr *rta = (void*)buf;
+	struct rtnexthop *rtnh;
+
+	rta->rta_type = RTA_MULTIPATH;
+	rta->rta_len = RTA_LENGTH(0);
+	rtnh = RTA_DATA(rta);
+
+	while (argc > 0) {
+		if (strcmp(*argv, "nexthop") != 0) {
+			fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
+			exit(-1);
+		}
+		if (argc <= 1) {
+			fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
+			exit(-1);
+		}
+		memset(rtnh, 0, sizeof(*rtnh));
+		rtnh->rtnh_len = sizeof(*rtnh);
+		rta->rta_len += rtnh->rtnh_len;
+		parse_one_nh(rta, rtnh, &argc, &argv);
+		rtnh = RTNH_NEXT(rtnh);
+	}
+
+	if (rta->rta_len > RTA_LENGTH(0))
+		addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
+	return 0;
+}
+
+
+int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr 	n;
+		struct rtmsg 		r;
+		char   			buf[1024];
+	} req;
+	char  mxbuf[256];
+	struct rtattr * mxrta = (void*)mxbuf;
+	unsigned mxlock = 0;
+	char  *d = NULL;
+	int gw_ok = 0;
+	int dst_ok = 0;
+	int nhs_ok = 0;
+	int scope_ok = 0;
+	int table_ok = 0;
+	int proto_ok = 0;
+	int type_ok = 0;
+
+	memset(&req, 0, sizeof(req));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+	req.n.nlmsg_type = cmd;
+	req.r.rtm_family = preferred_family;
+	req.r.rtm_table = RT_TABLE_MAIN;
+	req.r.rtm_scope = RT_SCOPE_NOWHERE;
+
+	if (cmd != RTM_DELROUTE) {
+		req.r.rtm_protocol = RTPROT_BOOT;
+		req.r.rtm_scope = RT_SCOPE_UNIVERSE;
+		req.r.rtm_type = RTN_UNICAST;
+	}
+
+	mxrta->rta_type = RTA_METRICS;
+	mxrta->rta_len = RTA_LENGTH(0);
+
+	while (argc > 0) {
+		if (strcmp(*argv, "src") == 0) {
+			inet_prefix addr;
+			NEXT_ARG();
+			get_addr(&addr, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = addr.family;
+			addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
+		} else if (strcmp(*argv, "via") == 0) {
+			inet_prefix addr;
+			gw_ok = 1;
+			NEXT_ARG();
+			get_addr(&addr, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = addr.family;
+			addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
+		} else if (strcmp(*argv, "from") == 0) {
+			inet_prefix addr;
+			NEXT_ARG();
+			get_prefix(&addr, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = addr.family;
+			if (addr.bytelen)
+				addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
+			req.r.rtm_src_len = addr.bitlen;
+		} else if (strcmp(*argv, "tos") == 0 ||
+			   matches(*argv, "dsfield") == 0) {
+			__u32 tos;
+			NEXT_ARG();
+			if (rtnl_dsfield_a2n(&tos, *argv))
+				invarg("\"tos\" value is invalid\n", *argv);
+			req.r.rtm_tos = tos;
+		} else if (matches(*argv, "metric") == 0 ||
+			   matches(*argv, "priority") == 0 ||
+			   matches(*argv, "preference") == 0) {
+			__u32 metric;
+			NEXT_ARG();
+			if (get_u32(&metric, *argv, 0))
+				invarg("\"metric\" value is invalid\n", *argv);
+			addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
+		} else if (strcmp(*argv, "scope") == 0) {
+			int scope = 0;
+			NEXT_ARG();
+			if (rtnl_rtscope_a2n(&scope, *argv))
+				invarg("invalid \"scope\" value\n", *argv);
+			req.r.rtm_scope = scope;
+			scope_ok = 1;
+		} else if (strcmp(*argv, "mtu") == 0) {
+			unsigned mtu;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_MTU);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&mtu, *argv, 0))
+				invarg("\"mtu\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
+#ifdef RTAX_ADVMSS
+		} else if (strcmp(*argv, "advmss") == 0) {
+			unsigned mss;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_ADVMSS);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&mss, *argv, 0))
+				invarg("\"mss\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
+#endif
+#ifdef RTAX_REORDERING
+		} else if (matches(*argv, "reordering") == 0) {
+			unsigned reord;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_REORDERING);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&reord, *argv, 0))
+				invarg("\"reordering\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
+#endif
+		} else if (strcmp(*argv, "rtt") == 0) {
+			unsigned rtt;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_RTT);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&rtt, *argv, 0))
+				invarg("\"rtt\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT, rtt);
+		} else if (matches(*argv, "window") == 0) {
+			unsigned win;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_WINDOW);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&win, *argv, 0))
+				invarg("\"window\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
+		} else if (matches(*argv, "cwnd") == 0) {
+			unsigned win;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_CWND);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&win, *argv, 0))
+				invarg("\"cwnd\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
+		} else if (matches(*argv, "rttvar") == 0) {
+			unsigned win;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_RTTVAR);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&win, *argv, 0))
+				invarg("\"rttvar\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR, win);
+		} else if (matches(*argv, "ssthresh") == 0) {
+			unsigned win;
+			NEXT_ARG();
+			if (strcmp(*argv, "lock") == 0) {
+				mxlock |= (1<<RTAX_SSTHRESH);
+				NEXT_ARG();
+			}
+			if (get_unsigned(&win, *argv, 0))
+				invarg("\"ssthresh\" value is invalid\n", *argv);
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
+		} else if (matches(*argv, "realms") == 0) {
+			__u32 realm;
+			NEXT_ARG();
+			if (get_rt_realms(&realm, *argv))
+				invarg("\"realm\" value is invalid\n", *argv);
+			addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
+		} else if (strcmp(*argv, "onlink") == 0) {
+			req.r.rtm_flags |= RTNH_F_ONLINK;
+		} else if (matches(*argv, "equalize") == 0 ||
+			   strcmp(*argv, "eql") == 0) {
+			req.r.rtm_flags |= RTM_F_EQUALIZE;
+		} else if (strcmp(*argv, "nexthop") == 0) {
+			nhs_ok = 1;
+			break;
+		} else if (matches(*argv, "protocol") == 0) {
+			int prot;
+			NEXT_ARG();
+			if (rtnl_rtprot_a2n(&prot, *argv))
+				invarg("\"protocol\" value is invalid\n", *argv);
+			req.r.rtm_protocol = prot;
+			proto_ok =1;
+		} else if (matches(*argv, "table") == 0) {
+			int tid;
+			NEXT_ARG();
+			if (rtnl_rttable_a2n(&tid, *argv))
+				invarg("\"table\" value is invalid\n", *argv);
+			req.r.rtm_table = tid;
+			table_ok = 1;
+		} else if (strcmp(*argv, "dev") == 0 ||
+			   strcmp(*argv, "oif") == 0) {
+			NEXT_ARG();
+			d = *argv;
+		} else {
+			int type;
+			inet_prefix dst;
+
+			if (strcmp(*argv, "to") == 0) {
+				NEXT_ARG();
+			}
+			if ((**argv < '0' || **argv > '9') &&
+			    rtnl_rtntype_a2n(&type, *argv) == 0) {
+				NEXT_ARG();
+				req.r.rtm_type = type;
+				type_ok = 1;
+			}
+
+			if (matches(*argv, "help") == 0)
+				usage();
+			if (dst_ok)
+				duparg2("to", *argv);
+			get_prefix(&dst, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = dst.family;
+			req.r.rtm_dst_len = dst.bitlen;
+			dst_ok = 1;
+			if (dst.bytelen)
+				addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
+		}
+		argc--; argv++;
+	}
+
+	if (rtnl_open(&rth, 0) < 0)
+		exit(1);
+
+	if (d || nhs_ok)  {
+		int idx;
+
+		ll_init_map(&rth);
+
+		if (d) {
+			if ((idx = ll_name_to_index(d)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", d);
+				return -1;
+			}
+			addattr32(&req.n, sizeof(req), RTA_OIF, idx);
+		}
+	}
+
+	if (mxrta->rta_len > RTA_LENGTH(0)) {
+		if (mxlock)
+			rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
+		addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
+	}
+
+	if (nhs_ok)
+		parse_nexthops(&req.n, &req.r, argc, argv);
+
+	if (!table_ok) {
+		if (req.r.rtm_type == RTN_LOCAL ||
+		    req.r.rtm_type == RTN_BROADCAST ||
+		    req.r.rtm_type == RTN_NAT ||
+		    req.r.rtm_type == RTN_ANYCAST)
+			req.r.rtm_table = RT_TABLE_LOCAL;
+	}
+	if (!scope_ok) {
+		if (req.r.rtm_type == RTN_LOCAL ||
+		    req.r.rtm_type == RTN_NAT)
+			req.r.rtm_scope = RT_SCOPE_HOST;
+		else if (req.r.rtm_type == RTN_BROADCAST ||
+			 req.r.rtm_type == RTN_MULTICAST ||
+			 req.r.rtm_type == RTN_ANYCAST)
+			req.r.rtm_scope = RT_SCOPE_LINK;
+		else if (req.r.rtm_type == RTN_UNICAST ||
+			 req.r.rtm_type == RTN_UNSPEC) {
+			if (cmd == RTM_DELROUTE)
+				req.r.rtm_scope = RT_SCOPE_NOWHERE;
+			else if (!gw_ok && !nhs_ok)
+				req.r.rtm_scope = RT_SCOPE_LINK;
+		}
+	}
+
+	if (req.r.rtm_family == AF_UNSPEC)
+		req.r.rtm_family = AF_INET;
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+		exit(2);
+
+	return 0;
+}
+
+static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
+{
+	struct {
+		struct nlmsghdr nlh;
+		struct rtmsg rtm;
+	} req;
+	struct sockaddr_nl nladdr;
+
+	memset(&nladdr, 0, sizeof(nladdr));
+	memset(&req, 0, sizeof(req));
+	nladdr.nl_family = AF_NETLINK;
+
+	req.nlh.nlmsg_len = sizeof(req);
+	req.nlh.nlmsg_type = RTM_GETROUTE;
+	req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
+	req.nlh.nlmsg_pid = 0;
+	req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
+	req.rtm.rtm_family = family;
+	req.rtm.rtm_flags |= RTM_F_CLONED;
+
+	return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
+}
+
+static int iproute_flush_cache(void)
+{
+#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
+
+	int len;
+	int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
+	char *buffer = "-1";
+
+	if (flush_fd < 0) {
+		fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
+		return -1;
+	}
+
+	len = strlen (buffer);
+		
+	if ((write (flush_fd, (void *)buffer, len)) < len) {
+		fprintf (stderr, "Cannot flush routing cache\n");
+		return -1;
+	}
+	close(flush_fd);
+	return 0;
+}
+
+
+static int iproute_list_or_flush(int argc, char **argv, int flush)
+{
+	int do_ipv6 = preferred_family;
+	struct rtnl_handle rth;
+	char *id = NULL;
+	char *od = NULL;
+
+	iproute_reset_filter();
+	filter.tb = RT_TABLE_MAIN;
+
+	if (flush && argc <= 0) {
+		fprintf(stderr, "\"ip route flush\" requires arguments.\n");
+		return -1;
+	}
+
+	while (argc > 0) {
+		if (matches(*argv, "table") == 0) {
+			int tid;
+			NEXT_ARG();
+			if (rtnl_rttable_a2n(&tid, *argv)) {
+				if (strcmp(*argv, "all") == 0) {
+					tid = 0;
+				} else if (strcmp(*argv, "cache") == 0) {
+					tid = -1;
+				} else if (strcmp(*argv, "help") == 0) {
+					usage();
+				} else {
+					invarg("table id value is invalid\n", *argv);
+				}
+			}
+			filter.tb = tid;
+		} else if (matches(*argv, "cached") == 0 ||
+			   matches(*argv, "cloned") == 0) {
+			filter.tb = -1;
+		} else if (strcmp(*argv, "tos") == 0 ||
+			   matches(*argv, "dsfield") == 0) {
+			__u32 tos;
+			NEXT_ARG();
+			if (rtnl_dsfield_a2n(&tos, *argv))
+				invarg("TOS value is invalid\n", *argv);
+			filter.tos = tos;
+			filter.tosmask = -1;
+		} else if (matches(*argv, "protocol") == 0) {
+			int prot = 0;
+			NEXT_ARG();
+			filter.protocolmask = -1;
+			if (rtnl_rtprot_a2n(&prot, *argv)) {
+				if (strcmp(*argv, "all") != 0)
+					invarg("invalid \"protocol\"\n", *argv);
+				prot = 0;
+				filter.protocolmask = 0;
+			}
+			filter.protocol = prot;
+		} else if (matches(*argv, "scope") == 0) {
+			int scope = 0;
+			NEXT_ARG();
+			filter.scopemask = -1;
+			if (rtnl_rtscope_a2n(&scope, *argv)) {
+				if (strcmp(*argv, "all") != 0)
+					invarg("invalid \"scope\"\n", *argv);
+				scope = RT_SCOPE_NOWHERE;
+				filter.scopemask = 0;
+			}
+			filter.scope = scope;
+		} else if (matches(*argv, "type") == 0) {
+			int type;
+			NEXT_ARG();
+			filter.typemask = -1;
+			if (rtnl_rtntype_a2n(&type, *argv))
+				invarg("node type value is invalid\n", *argv);
+			filter.type = type;
+		} else if (strcmp(*argv, "dev") == 0 ||
+			   strcmp(*argv, "oif") == 0) {
+			NEXT_ARG();
+			od = *argv;
+		} else if (strcmp(*argv, "iif") == 0) {
+			NEXT_ARG();
+			id = *argv;
+		} else if (strcmp(*argv, "via") == 0) {
+			NEXT_ARG();
+			get_prefix(&filter.rvia, *argv, do_ipv6);
+		} else if (strcmp(*argv, "src") == 0) {
+			NEXT_ARG();
+			get_prefix(&filter.rprefsrc, *argv, do_ipv6);
+		} else if (matches(*argv, "realms") == 0) {
+			__u32 realm;
+			NEXT_ARG();
+			if (get_rt_realms(&realm, *argv))
+				invarg("invalid realms\n", *argv);
+			filter.realm = realm;
+			filter.realmmask = ~0U;
+			if ((filter.realm&0xFFFF) == 0 &&
+			    (*argv)[strlen(*argv) - 1] == '/')
+				filter.realmmask &= ~0xFFFF;
+			if ((filter.realm&0xFFFF0000U) == 0 &&
+			    (strchr(*argv, '/') == NULL ||
+			     (*argv)[0] == '/'))
+				filter.realmmask &= ~0xFFFF0000U;
+		} else if (matches(*argv, "from") == 0) {
+			NEXT_ARG();
+			if (matches(*argv, "root") == 0) {
+				NEXT_ARG();
+				get_prefix(&filter.rsrc, *argv, do_ipv6);
+			} else if (matches(*argv, "match") == 0) {
+				NEXT_ARG();
+				get_prefix(&filter.msrc, *argv, do_ipv6);
+			} else {
+				if (matches(*argv, "exact") == 0) {
+					NEXT_ARG();
+				}
+				get_prefix(&filter.msrc, *argv, do_ipv6);
+				filter.rsrc = filter.msrc;
+			}
+		} else {
+			if (matches(*argv, "to") == 0) {
+				NEXT_ARG();
+			}
+			if (matches(*argv, "root") == 0) {
+				NEXT_ARG();
+				get_prefix(&filter.rdst, *argv, do_ipv6);
+			} else if (matches(*argv, "match") == 0) {
+				NEXT_ARG();
+				get_prefix(&filter.mdst, *argv, do_ipv6);
+			} else {
+				if (matches(*argv, "exact") == 0) {
+					NEXT_ARG();
+				}
+				get_prefix(&filter.mdst, *argv, do_ipv6);
+				filter.rdst = filter.mdst;
+			}
+		}
+		argc--; argv++;
+	}
+
+	if (do_ipv6 == AF_UNSPEC && filter.tb)
+		do_ipv6 = AF_INET;
+
+	if (rtnl_open(&rth, 0) < 0)
+		exit(1);
+
+	ll_init_map(&rth);
+
+	if (id || od)  {
+		int idx;
+
+		if (id) {
+			if ((idx = ll_name_to_index(id)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", id);
+				return -1;
+			}
+			filter.iif = idx;
+			filter.iifmask = -1;
+		}
+		if (od) {
+			if ((idx = ll_name_to_index(od)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", od);
+				return -1;
+			}
+			filter.oif = idx;
+			filter.oifmask = -1;
+		}
+	}
+
+	if (flush) {
+		int round = 0;
+		char flushb[4096-512];
+
+		if (filter.tb == -1) {
+			if (do_ipv6 != AF_INET6) {
+				iproute_flush_cache();
+				if (show_stats)
+					printf("*** IPv4 routing cache is flushed.\n");
+			}
+			if (do_ipv6 == AF_INET)
+				return 0;
+		}
+
+		filter.flushb = flushb;
+		filter.flushp = 0;
+		filter.flushe = sizeof(flushb);
+		filter.rth = &rth;
+
+		for (;;) {
+			if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
+				perror("Cannot send dump request");
+				exit(1);
+			}
+			filter.flushed = 0;
+			if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
+				fprintf(stderr, "Flush terminated\n");
+				exit(1);
+			}
+			if (filter.flushed == 0) {
+				if (round == 0) {
+					if (filter.tb != -1 || do_ipv6 == AF_INET6)
+						fprintf(stderr, "Nothing to flush.\n");
+				} else if (show_stats)
+					printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
+				fflush(stdout);
+				return 0;
+			}
+			round++;
+			if (flush_update() < 0)
+				exit(1);
+			if (show_stats) {
+				printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
+				fflush(stdout);
+			}
+		}
+	}
+
+	if (filter.tb != -1) {
+		if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
+			perror("Cannot send dump request");
+			exit(1);
+		}
+	} else {
+		if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
+			perror("Cannot send dump request");
+			exit(1);
+		}
+	}
+
+	if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
+		fprintf(stderr, "Dump terminated\n");
+		exit(1);
+	}
+
+	exit(0);
+}
+
+
+int iproute_get(int argc, char **argv)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr 	n;
+		struct rtmsg 		r;
+		char   			buf[1024];
+	} req;
+	char  *idev = NULL;
+	char  *odev = NULL;
+	int connected = 0;
+	int from_ok = 0;
+
+	memset(&req, 0, sizeof(req));
+
+	iproute_reset_filter();
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST;
+	req.n.nlmsg_type = RTM_GETROUTE;
+	req.r.rtm_family = preferred_family;
+	req.r.rtm_table = 0;
+	req.r.rtm_protocol = 0;
+	req.r.rtm_scope = 0;
+	req.r.rtm_type = 0;
+	req.r.rtm_src_len = 0;
+	req.r.rtm_dst_len = 0;
+	req.r.rtm_tos = 0;
+	
+	while (argc > 0) {
+		if (strcmp(*argv, "tos") == 0 ||
+		    matches(*argv, "dsfield") == 0) {
+			__u32 tos;
+			NEXT_ARG();
+			if (rtnl_dsfield_a2n(&tos, *argv))
+				invarg("TOS value is invalid\n", *argv);
+			req.r.rtm_tos = tos;
+		} else if (matches(*argv, "from") == 0) {
+			inet_prefix addr;
+			NEXT_ARG();
+			if (matches(*argv, "help") == 0)
+				usage();
+			from_ok = 1;
+			get_prefix(&addr, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = addr.family;
+			if (addr.bytelen)
+				addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
+			req.r.rtm_src_len = addr.bitlen;
+		} else if (matches(*argv, "iif") == 0) {
+			NEXT_ARG();
+			idev = *argv;
+		} else if (matches(*argv, "oif") == 0 ||
+			   strcmp(*argv, "dev") == 0) {
+			NEXT_ARG();
+			odev = *argv;
+		} else if (matches(*argv, "notify") == 0) {
+			req.r.rtm_flags |= RTM_F_NOTIFY;
+		} else if (matches(*argv, "connected") == 0) {
+			connected = 1;
+		} else {
+			inet_prefix addr;
+			if (strcmp(*argv, "to") == 0) {
+				NEXT_ARG();
+			}
+			if (matches(*argv, "help") == 0)
+				usage();
+			get_prefix(&addr, *argv, req.r.rtm_family);
+			if (req.r.rtm_family == AF_UNSPEC)
+				req.r.rtm_family = addr.family;
+			if (addr.bytelen)
+				addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
+			req.r.rtm_dst_len = addr.bitlen;
+		}
+		argc--; argv++;
+	}
+
+	if (req.r.rtm_dst_len == 0) {
+		fprintf(stderr, "need at least destination address\n");
+		exit(1);
+	}
+
+	if (rtnl_open(&rth, 0) < 0)
+		exit(1);
+
+	ll_init_map(&rth);
+
+	if (idev || odev)  {
+		int idx;
+
+		if (idev) {
+			if ((idx = ll_name_to_index(idev)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", idev);
+				return -1;
+			}
+			addattr32(&req.n, sizeof(req), RTA_IIF, idx);
+		}
+		if (odev) {
+			if ((idx = ll_name_to_index(odev)) == 0) {
+				fprintf(stderr, "Cannot find device \"%s\"\n", odev);
+				return -1;
+			}
+			addattr32(&req.n, sizeof(req), RTA_OIF, idx);
+		}
+	}
+
+	if (req.r.rtm_family == AF_UNSPEC)
+		req.r.rtm_family = AF_INET;
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
+		exit(2);
+
+	if (connected && !from_ok) {
+		struct rtmsg *r = NLMSG_DATA(&req.n);
+		int len = req.n.nlmsg_len;
+		struct rtattr * tb[RTA_MAX+1];
+
+		if (print_route(NULL, &req.n, (void*)stdout) < 0) {
+			fprintf(stderr, "An error :-)\n");
+			exit(1);
+		}
+
+		if (req.n.nlmsg_type != RTM_NEWROUTE) {
+			fprintf(stderr, "Not a route?\n");
+			return -1;
+		}
+		len -= NLMSG_LENGTH(sizeof(*r));
+		if (len < 0) {
+			fprintf(stderr, "Wrong len %d\n", len);
+			return -1;
+		}
+
+		memset(tb, 0, sizeof(tb));
+		parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+
+		if (tb[RTA_PREFSRC]) {
+			tb[RTA_PREFSRC]->rta_type = RTA_SRC;
+			r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
+		} else if (!tb[RTA_SRC]) {
+			fprintf(stderr, "Failed to connect the route\n");
+			return -1;
+		}
+		if (!odev && tb[RTA_OIF])
+			tb[RTA_OIF]->rta_type = 0;
+		if (tb[RTA_GATEWAY])
+			tb[RTA_GATEWAY]->rta_type = 0;
+		if (!idev && tb[RTA_IIF])
+			tb[RTA_IIF]->rta_type = 0;
+		req.n.nlmsg_flags = NLM_F_REQUEST;
+		req.n.nlmsg_type = RTM_GETROUTE;
+
+		if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
+			exit(2);
+	}
+
+	if (print_route(NULL, &req.n, (void*)stdout) < 0) {
+		fprintf(stderr, "An error :-)\n");
+		exit(1);
+	}
+
+	exit(0);
+}
+
+void iproute_reset_filter()
+{
+	memset(&filter, 0, sizeof(filter));
+	filter.mdst.bitlen = -1;
+	filter.msrc.bitlen = -1;
+}
+
+int do_iproute(int argc, char **argv)
+{
+	if (argc < 1)
+		return iproute_list_or_flush(0, NULL, 0);
+	
+	if (matches(*argv, "add") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
+				      argc-1, argv+1);
+	if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
+				      argc-1, argv+1);
+	if (matches(*argv, "replace") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
+				      argc-1, argv+1);
+	if (matches(*argv, "prepend") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
+				      argc-1, argv+1);
+	if (matches(*argv, "append") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
+				      argc-1, argv+1);
+	if (matches(*argv, "test") == 0)
+		return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
+				      argc-1, argv+1);
+	if (matches(*argv, "delete") == 0)
+		return iproute_modify(RTM_DELROUTE, 0,
+				      argc-1, argv+1);
+	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+	    || matches(*argv, "lst") == 0)
+		return iproute_list_or_flush(argc-1, argv+1, 0);
+	if (matches(*argv, "get") == 0)
+		return iproute_get(argc-1, argv+1);
+	if (matches(*argv, "flush") == 0)
+		return iproute_list_or_flush(argc-1, argv+1, 1);
+	if (matches(*argv, "help") == 0)
+		usage();
+	fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
+	exit(-1);
+}
+