zebra/zebra_vty.c

/* Zebra VTY functions
 * Copyright (C) 2002 Kunihiro Ishiguro
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra 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, or (at your option) any
 * later version.
 *
 * GNU Zebra is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Zebra; see the file COPYING.  If not, write to the 
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
 * Boston, MA 02111-1307, USA.  
 */

#include <zebra.h>

#include "if.h"
#include "prefix.h"
#include "command.h"
#include "table.h"
#include "rib.h"

#include "zebra/zserv.h"

/* Return route type string for VTY output.  */
static const char *
route_type_str (u_char type)
{
  switch (type)
    {
    case ZEBRA_ROUTE_SYSTEM:
      return "system";
    case ZEBRA_ROUTE_KERNEL:
      return "kernel";
    case ZEBRA_ROUTE_CONNECT:
      return "connected";
    case ZEBRA_ROUTE_STATIC:
      return "static";
    case ZEBRA_ROUTE_RIP:
      return "rip";
    case ZEBRA_ROUTE_RIPNG:
      return "rip";
    case ZEBRA_ROUTE_OSPF:
      return "ospf";
    case ZEBRA_ROUTE_OSPF6:
      return "ospf";
    case ZEBRA_ROUTE_ISIS:
      return "isis";
    case ZEBRA_ROUTE_BGP:
      return "bgp";
    default:
      return "unknown";
    }
};

/* Return route type string for VTY output.  */
static const char
route_type_char (u_char type)
{
  switch (type)
    {
    case ZEBRA_ROUTE_SYSTEM:
      return 'S';
    case ZEBRA_ROUTE_KERNEL:
      return 'K';
    case ZEBRA_ROUTE_CONNECT:
      return 'C';
    case ZEBRA_ROUTE_STATIC:
      return 'S';
    case ZEBRA_ROUTE_RIP:
      return 'R';
    case ZEBRA_ROUTE_RIPNG:
      return 'R';
    case ZEBRA_ROUTE_OSPF:
      return 'O';
    case ZEBRA_ROUTE_OSPF6:
      return 'O';
    case ZEBRA_ROUTE_ISIS:
      return 'I';
    case ZEBRA_ROUTE_BGP:
      return 'B';
    default:
      return '?';
    }
};

/* General fucntion for static route. */
static int
zebra_static_ipv4 (struct vty *vty, int add_cmd, const char *dest_str,
		   const char *mask_str, const char *gate_str,
		   const char *flag_str, const char *distance_str)
{
  int ret;
  u_char distance;
  struct prefix p;
  struct in_addr gate;
  struct in_addr mask;
  const char *ifname;
  u_char flag = 0;
  
  ret = str2prefix (dest_str, &p);
  if (ret <= 0)
    {
      vty_out (vty, "%% Malformed address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  /* Cisco like mask notation. */
  if (mask_str)
    {
      ret = inet_aton (mask_str, &mask);
      if (ret == 0)
        {
          vty_out (vty, "%% Malformed address%s", VTY_NEWLINE);
          return CMD_WARNING;
        }
      p.prefixlen = ip_masklen (mask);
    }

  /* Apply mask for given prefix. */
  apply_mask (&p);

  /* Administrative distance. */
  if (distance_str)
    distance = atoi (distance_str);
  else
    distance = ZEBRA_STATIC_DISTANCE_DEFAULT;

  /* Null0 static route.  */
  if ((gate_str != NULL) && (strncasecmp (gate_str, "Null0", strlen (gate_str)) == 0))
    {
      if (flag_str)
        {
          vty_out (vty, "%% can not have flag %s with Null0%s", flag_str, VTY_NEWLINE);
          return CMD_WARNING;
        }
      if (add_cmd)
        static_add_ipv4 (&p, NULL, NULL, ZEBRA_FLAG_BLACKHOLE, distance, 0);
      else
        static_delete_ipv4 (&p, NULL, NULL, distance, 0);
      return CMD_SUCCESS;
    }

  /* Route flags */
  if (flag_str) {
    switch(flag_str[0]) {
      case 'r':
      case 'R': /* XXX */
        SET_FLAG (flag, ZEBRA_FLAG_REJECT);
        break;
      case 'b':
      case 'B': /* XXX */
        SET_FLAG (flag, ZEBRA_FLAG_BLACKHOLE);
        break;
      default:
        vty_out (vty, "%% Malformed flag %s %s", flag_str, VTY_NEWLINE);
        return CMD_WARNING;
    }
  }

  if (gate_str == NULL)
  {
    if (add_cmd)
      static_add_ipv4 (&p, NULL, NULL, flag, distance, 0);
    else
      static_delete_ipv4 (&p, NULL, NULL, distance, 0);

    return CMD_SUCCESS;
  }
  
  /* When gateway is A.B.C.D format, gate is treated as nexthop
     address other case gate is treated as interface name. */
  ret = inet_aton (gate_str, &gate);
  if (ret)
    ifname = NULL;
  else
    ifname = gate_str;

  if (add_cmd)
    static_add_ipv4 (&p, ifname ? NULL : &gate, ifname, flag, distance, 0);
  else
    static_delete_ipv4 (&p, ifname ? NULL : &gate, ifname, distance, 0);

  return CMD_SUCCESS;
}

/* Static route configuration.  */
DEFUN (ip_route, 
       ip_route_cmd,
       "ip route A.B.C.D/M (A.B.C.D|INTERFACE|null0)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, argv[1], NULL, NULL);
}

DEFUN (ip_route_flags,
       ip_route_flags_cmd,
       "ip route A.B.C.D/M (A.B.C.D|INTERFACE) (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, argv[1], argv[2], NULL);
}

DEFUN (ip_route_flags2,
       ip_route_flags2_cmd,
       "ip route A.B.C.D/M (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, NULL, argv[1], NULL);
}

/* Mask as A.B.C.D format.  */
DEFUN (ip_route_mask,
       ip_route_mask_cmd,
       "ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE|null0)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], argv[2], NULL, NULL);
}

DEFUN (ip_route_mask_flags,
       ip_route_mask_flags_cmd,
       "ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE) (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], argv[2], argv[3], NULL);
}

DEFUN (ip_route_mask_flags2,
       ip_route_mask_flags2_cmd,
       "ip route A.B.C.D A.B.C.D (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], NULL, argv[2], NULL);
}

/* Distance option value.  */
DEFUN (ip_route_distance,
       ip_route_distance_cmd,
       "ip route A.B.C.D/M (A.B.C.D|INTERFACE|null0) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, argv[1], NULL, argv[2]);
}

DEFUN (ip_route_flags_distance,
       ip_route_flags_distance_cmd,
       "ip route A.B.C.D/M (A.B.C.D|INTERFACE) (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, argv[1], argv[2], argv[3]);
}

DEFUN (ip_route_flags_distance2,
       ip_route_flags_distance2_cmd,
       "ip route A.B.C.D/M (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], NULL, NULL, argv[1], argv[2]);
}

DEFUN (ip_route_mask_distance,
       ip_route_mask_distance_cmd,
       "ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE|null0) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], argv[2], NULL, argv[3]);
}

DEFUN (ip_route_mask_flags_distance,
       ip_route_mask_flags_distance_cmd,
       "ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE) (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Distance value for this route\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], argv[2], argv[3], argv[4]);
}

DEFUN (ip_route_mask_flags_distance2,
       ip_route_mask_flags_distance2_cmd,
       "ip route A.B.C.D A.B.C.D (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "Distance value for this route\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 1, argv[0], argv[1], NULL, argv[2], argv[3]);
}

DEFUN (no_ip_route, 
       no_ip_route_cmd,
       "no ip route A.B.C.D/M (A.B.C.D|INTERFACE|null0)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], NULL, argv[1], NULL, NULL);
}

ALIAS (no_ip_route,
       no_ip_route_flags_cmd,
       "no ip route A.B.C.D/M (A.B.C.D|INTERFACE) (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")

DEFUN (no_ip_route_flags2,
       no_ip_route_flags2_cmd,
       "no ip route A.B.C.D/M (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], NULL, NULL, NULL, NULL);
}

DEFUN (no_ip_route_mask,
       no_ip_route_mask_cmd,
       "no ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE|null0)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], argv[1], argv[2], NULL, NULL);
}

ALIAS (no_ip_route_mask,
       no_ip_route_mask_flags_cmd,
       "no ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE) (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")

DEFUN (no_ip_route_mask_flags2,
       no_ip_route_mask_flags2_cmd,
       "no ip route A.B.C.D A.B.C.D (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], argv[1], NULL, NULL, NULL);
}

DEFUN (no_ip_route_distance,
       no_ip_route_distance_cmd,
       "no ip route A.B.C.D/M (A.B.C.D|INTERFACE|null0) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], NULL, argv[1], NULL, argv[2]);
}

DEFUN (no_ip_route_flags_distance,
       no_ip_route_flags_distance_cmd,
       "no ip route A.B.C.D/M (A.B.C.D|INTERFACE) (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], NULL, argv[1], argv[2], argv[3]);
}

DEFUN (no_ip_route_flags_distance2,
       no_ip_route_flags_distance2_cmd,
       "no ip route A.B.C.D/M (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix (e.g. 10.0.0.0/8)\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], NULL, NULL, argv[1], argv[2]);
}

DEFUN (no_ip_route_mask_distance,
       no_ip_route_mask_distance_cmd,
       "no ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE|null0) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Null interface\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], argv[1], argv[2], NULL, argv[3]);
}

DEFUN (no_ip_route_mask_flags_distance,
       no_ip_route_mask_flags_distance_cmd,
       "no ip route A.B.C.D A.B.C.D (A.B.C.D|INTERFACE) (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "IP gateway address\n"
       "IP gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], argv[1], argv[2], argv[3], argv[4]);
}

DEFUN (no_ip_route_mask_flags_distance2,
       no_ip_route_mask_flags_distance2_cmd,
       "no ip route A.B.C.D A.B.C.D (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IP destination prefix\n"
       "IP destination prefix mask\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this route\n")
{
  return zebra_static_ipv4 (vty, 0, argv[0], argv[1], NULL, argv[2], argv[3]);
}

/* New RIB.  Detailed information for IPv4 route. */
static void
vty_show_ip_route_detail (struct vty *vty, struct route_node *rn)
{
  struct rib *rib;
  struct nexthop *nexthop;

  for (rib = rn->info; rib; rib = rib->next)
    {
      vty_out (vty, "Routing entry for %s/%d%s", 
	       inet_ntoa (rn->p.u.prefix4), rn->p.prefixlen,
	       VTY_NEWLINE);
      vty_out (vty, "  Known via \"%s\"", route_type_str (rib->type));
      vty_out (vty, ", distance %d, metric %d", rib->distance, rib->metric);
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED))
	vty_out (vty, ", best");
      if (rib->refcnt)
	vty_out (vty, ", refcnt %ld", rib->refcnt);
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE))
       vty_out (vty, ", blackhole");
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_REJECT))
       vty_out (vty, ", reject");
      vty_out (vty, "%s", VTY_NEWLINE);

#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7
      if (rib->type == ZEBRA_ROUTE_RIP
	  || rib->type == ZEBRA_ROUTE_OSPF
	  || rib->type == ZEBRA_ROUTE_ISIS
	  || rib->type == ZEBRA_ROUTE_BGP)
	{
	  time_t uptime;
	  struct tm *tm;

	  uptime = time (NULL);
	  uptime -= rib->uptime;
	  tm = gmtime (&uptime);

	  vty_out (vty, "  Last update ");

	  if (uptime < ONE_DAY_SECOND)
	    vty_out (vty,  "%02d:%02d:%02d", 
		     tm->tm_hour, tm->tm_min, tm->tm_sec);
	  else if (uptime < ONE_WEEK_SECOND)
	    vty_out (vty, "%dd%02dh%02dm", 
		     tm->tm_yday, tm->tm_hour, tm->tm_min);
	  else
	    vty_out (vty, "%02dw%dd%02dh", 
		     tm->tm_yday/7,
		     tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
	  vty_out (vty, " ago%s", VTY_NEWLINE);
	}

      for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
	{
	  vty_out (vty, "  %c",
		   CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB) ? '*' : ' ');

	  switch (nexthop->type)
	    {
	    case NEXTHOP_TYPE_IPV4:
	    case NEXTHOP_TYPE_IPV4_IFINDEX:
	      vty_out (vty, " %s", inet_ntoa (nexthop->gate.ipv4));
	      if (nexthop->ifindex)
		vty_out (vty, ", via %s", ifindex2ifname (nexthop->ifindex));
	      break;
	    case NEXTHOP_TYPE_IFINDEX:
	      vty_out (vty, " directly connected, %s",
		       ifindex2ifname (nexthop->ifindex));
	      break;
	    case NEXTHOP_TYPE_IFNAME:
	      vty_out (vty, " directly connected, %s", nexthop->ifname);
	      break;
      case NEXTHOP_TYPE_BLACKHOLE:
        vty_out (vty, " directly connected, Null0");
        break;
      default:
	      break;
	    }
	  if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
	    vty_out (vty, " inactive");

	  if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
	    {
	      vty_out (vty, " (recursive");
		
	      switch (nexthop->rtype)
		{
		case NEXTHOP_TYPE_IPV4:
		case NEXTHOP_TYPE_IPV4_IFINDEX:
		  vty_out (vty, " via %s)", inet_ntoa (nexthop->rgate.ipv4));
		  break;
		case NEXTHOP_TYPE_IFINDEX:
		case NEXTHOP_TYPE_IFNAME:
		  vty_out (vty, " is directly connected, %s)",
			   ifindex2ifname (nexthop->rifindex));
		  break;
		default:
		  break;
		}
	    }
	  vty_out (vty, "%s", VTY_NEWLINE);
	}
      vty_out (vty, "%s", VTY_NEWLINE);
    }
}

static void
vty_show_ip_route (struct vty *vty, struct route_node *rn, struct rib *rib)
{
  struct nexthop *nexthop;
  int len = 0;
  char buf[BUFSIZ];

  /* Nexthop information. */
  for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
    {
      if (nexthop == rib->nexthop)
	{
	  /* Prefix information. */
	  len = vty_out (vty, "%c%c%c %s/%d",
			 route_type_char (rib->type),
			 CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)
			 ? '>' : ' ',
			 CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)
			 ? '*' : ' ',
			 inet_ntop (AF_INET, &rn->p.u.prefix, buf, BUFSIZ),
			 rn->p.prefixlen);
		
	  /* Distance and metric display. */
	  if (rib->type != ZEBRA_ROUTE_CONNECT 
	      && rib->type != ZEBRA_ROUTE_KERNEL)
	    len += vty_out (vty, " [%d/%d]", rib->distance,
			    rib->metric);
	}
      else
	vty_out (vty, "  %c%*c",
		 CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)
		 ? '*' : ' ',
		 len - 3, ' ');

      switch (nexthop->type)
	{
	case NEXTHOP_TYPE_IPV4:
	case NEXTHOP_TYPE_IPV4_IFINDEX:
	  vty_out (vty, " via %s", inet_ntoa (nexthop->gate.ipv4));
	  if (nexthop->ifindex)
	    vty_out (vty, ", %s", ifindex2ifname (nexthop->ifindex));
	  break;
	case NEXTHOP_TYPE_IFINDEX:
	  vty_out (vty, " is directly connected, %s",
		   ifindex2ifname (nexthop->ifindex));
	  break;
	case NEXTHOP_TYPE_IFNAME:
	  vty_out (vty, " is directly connected, %s", nexthop->ifname);
	  break;
  case NEXTHOP_TYPE_BLACKHOLE:
    vty_out (vty, " is directly connected, Null0");
    break;
  default:
	  break;
	}
      if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
	vty_out (vty, " inactive");

      if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
	{
	  vty_out (vty, " (recursive");
		
	  switch (nexthop->rtype)
	    {
	    case NEXTHOP_TYPE_IPV4:
	    case NEXTHOP_TYPE_IPV4_IFINDEX:
	      vty_out (vty, " via %s)", inet_ntoa (nexthop->rgate.ipv4));
	      break;
	    case NEXTHOP_TYPE_IFINDEX:
	    case NEXTHOP_TYPE_IFNAME:
	      vty_out (vty, " is directly connected, %s)",
		       ifindex2ifname (nexthop->rifindex));
	      break;
	    default:
	      break;
	    }
	}

      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE))
               vty_out (vty, ", bh");
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_REJECT))
               vty_out (vty, ", rej");

      if (rib->type == ZEBRA_ROUTE_RIP
	  || rib->type == ZEBRA_ROUTE_OSPF
	  || rib->type == ZEBRA_ROUTE_ISIS
	  || rib->type == ZEBRA_ROUTE_BGP)
	{
	  time_t uptime;
	  struct tm *tm;

	  uptime = time (NULL);
	  uptime -= rib->uptime;
	  tm = gmtime (&uptime);

#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7

	  if (uptime < ONE_DAY_SECOND)
	    vty_out (vty,  ", %02d:%02d:%02d", 
		     tm->tm_hour, tm->tm_min, tm->tm_sec);
	  else if (uptime < ONE_WEEK_SECOND)
	    vty_out (vty, ", %dd%02dh%02dm", 
		     tm->tm_yday, tm->tm_hour, tm->tm_min);
	  else
	    vty_out (vty, ", %02dw%dd%02dh", 
		     tm->tm_yday/7,
		     tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
	}
      vty_out (vty, "%s", VTY_NEWLINE);
    }
}

#define SHOW_ROUTE_V4_HEADER "Codes: K - kernel route, C - connected, " \
  "S - static, R - RIP, O - OSPF,%s       I - ISIS, B - BGP, " \
  "> - selected route, * - FIB route%s%s"

DEFUN (show_ip_route,
       show_ip_route_cmd,
       "show ip route",
       SHOW_STR
       IP_STR
       "IP routing table\n")
{
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  int first = 1;

  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show all IPv4 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      {
	if (first)
	  {
	    vty_out (vty, SHOW_ROUTE_V4_HEADER, VTY_NEWLINE, VTY_NEWLINE,
		     VTY_NEWLINE);
	    first = 0;
	  }
	vty_show_ip_route (vty, rn, rib);
      }
  return CMD_SUCCESS;
}

DEFUN (show_ip_route_prefix_longer,
       show_ip_route_prefix_longer_cmd,
       "show ip route A.B.C.D/M longer-prefixes",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "IP prefix <network>/<length>, e.g., 35.0.0.0/8\n"
       "Show route matching the specified Network/Mask pair only\n")
{
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  struct prefix p;
  int ret;
  int first = 1;

  ret = str2prefix (argv[0], &p);
  if (! ret)
    {
      vty_out (vty, "%% Malformed Prefix%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  
  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show matched type IPv4 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      if (prefix_match (&p, &rn->p))
	{
	  if (first)
	    {
	      vty_out (vty, SHOW_ROUTE_V4_HEADER, VTY_NEWLINE,
		       VTY_NEWLINE, VTY_NEWLINE);
	      first = 0;
	    }
	  vty_show_ip_route (vty, rn, rib);
	}
  return CMD_SUCCESS;
}

DEFUN (show_ip_route_supernets,
       show_ip_route_supernets_cmd,
       "show ip route supernets-only",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "Show supernet entries only\n")
{
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  u_int32_t addr; 
  int first = 1;

  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show matched type IPv4 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      {
	addr = ntohl (rn->p.u.prefix4.s_addr);

	if ((IN_CLASSC (addr) && rn->p.prefixlen < 24)
	   || (IN_CLASSB (addr) && rn->p.prefixlen < 16)
	   || (IN_CLASSA (addr) && rn->p.prefixlen < 8)) 
	  {
	    if (first)
	      {
		vty_out (vty, SHOW_ROUTE_V4_HEADER, VTY_NEWLINE,
			 VTY_NEWLINE, VTY_NEWLINE);
		first = 0;
	      }
	    vty_show_ip_route (vty, rn, rib);
	  }
      }
  return CMD_SUCCESS;
}

DEFUN (show_ip_route_protocol,
       show_ip_route_protocol_cmd,
       "show ip route (bgp|connected|isis|kernel|ospf|rip|static)",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "Border Gateway Protocol (BGP)\n"
       "Connected\n"
       "ISO IS-IS (ISIS)\n"
       "Kernel\n"
       "Open Shortest Path First (OSPF)\n"
       "Routing Information Protocol (RIP)\n"
       "Static routes\n")
{
  int type;
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  int first = 1;

  if (strncmp (argv[0], "b", 1) == 0)
    type = ZEBRA_ROUTE_BGP;
  else if (strncmp (argv[0], "c", 1) == 0)
    type = ZEBRA_ROUTE_CONNECT;
  else if (strncmp (argv[0], "k", 1) ==0)
    type = ZEBRA_ROUTE_KERNEL;
  else if (strncmp (argv[0], "o", 1) == 0)
    type = ZEBRA_ROUTE_OSPF;
  else if (strncmp (argv[0], "i", 1) == 0)
    type = ZEBRA_ROUTE_ISIS;
  else if (strncmp (argv[0], "r", 1) == 0)
    type = ZEBRA_ROUTE_RIP;
  else if (strncmp (argv[0], "s", 1) == 0)
    type = ZEBRA_ROUTE_STATIC;
  else 
    {
      vty_out (vty, "Unknown route type%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  
  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show matched type IPv4 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      if (rib->type == type)
	{
	  if (first)
	    {
	      vty_out (vty, SHOW_ROUTE_V4_HEADER,
		       VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
	      first = 0;
	    }
	  vty_show_ip_route (vty, rn, rib);
	}
  return CMD_SUCCESS;
}

DEFUN (show_ip_route_addr,
       show_ip_route_addr_cmd,
       "show ip route A.B.C.D",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "Network in the IP routing table to display\n")
{
  int ret;
  struct prefix_ipv4 p;
  struct route_table *table;
  struct route_node *rn;

  ret = str2prefix_ipv4 (argv[0], &p);
  if (ret <= 0)
    {
      vty_out (vty, "%% Malformed IPv4 address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  rn = route_node_match (table, (struct prefix *) &p);
  if (! rn)
    {
      vty_out (vty, "%% Network not in table%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  vty_show_ip_route_detail (vty, rn);

  route_unlock_node (rn);

  return CMD_SUCCESS;
}

DEFUN (show_ip_route_prefix,
       show_ip_route_prefix_cmd,
       "show ip route A.B.C.D/M",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "IP prefix <network>/<length>, e.g., 35.0.0.0/8\n")
{
  int ret;
  struct prefix_ipv4 p;
  struct route_table *table;
  struct route_node *rn;

  ret = str2prefix_ipv4 (argv[0], &p);
  if (ret <= 0)
    {
      vty_out (vty, "%% Malformed IPv4 address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  table = vrf_table (AFI_IP, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  rn = route_node_match (table, (struct prefix *) &p);
  if (! rn || rn->p.prefixlen != p.prefixlen)
    {
      vty_out (vty, "%% Network not in table%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  vty_show_ip_route_detail (vty, rn);

  route_unlock_node (rn);

  return CMD_SUCCESS;
}

static void
zebra_show_ip_route (struct vty *vty, struct vrf *vrf)
{
  vty_out (vty, "IP routing table name is %s(%d)%s",
	   vrf->name ? vrf->name : "", vrf->id, VTY_NEWLINE);

  vty_out (vty, "Route Source    Networks%s", VTY_NEWLINE);
  vty_out (vty, "connected       %d%s", 0, VTY_NEWLINE);
  vty_out (vty, "static          %d%s", 0, VTY_NEWLINE);
  vty_out (vty, "rip             %d%s", 0, VTY_NEWLINE);

  vty_out (vty, "bgp             %d%s", 0, VTY_NEWLINE);
  vty_out (vty, " External: %d Internal: %d Local: %d%s",
	   0, 0, 0, VTY_NEWLINE);

  vty_out (vty, "ospf            %d%s", 0, VTY_NEWLINE);
  vty_out (vty,
	   "  Intra-area: %d Inter-area: %d External-1: %d External-2: %d%s",
	   0, 0, 0, 0, VTY_NEWLINE);
  vty_out (vty, "  NSSA External-1: %d NSSA External-2: %d%s",
	   0, 0, VTY_NEWLINE);

  vty_out (vty, "internal        %d%s", 0, VTY_NEWLINE);
  vty_out (vty, "Total           %d%s", 0, VTY_NEWLINE);
}

/* Show route summary.  */
DEFUN (show_ip_route_summary,
       show_ip_route_summary_cmd,
       "show ip route summary",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "Summary of all routes\n")
{
  struct vrf *vrf;

  /* Default table id is zero.  */
  vrf = vrf_lookup (0);
  if (! vrf)
    {
      vty_out (vty, "%% No Default-IP-Routing-Table%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  zebra_show_ip_route (vty, vrf);

  return CMD_SUCCESS;
}

/* Write IPv4 static route configuration. */
static int
static_config_ipv4 (struct vty *vty)
{
  struct route_node *rn;
  struct static_ipv4 *si;  
  struct route_table *stable;
  int write;

  write = 0;

  /* Lookup table.  */
  stable = vrf_static_table (AFI_IP, SAFI_UNICAST, 0);
  if (! stable)
    return -1;

  for (rn = route_top (stable); rn; rn = route_next (rn))
    for (si = rn->info; si; si = si->next)
      {
        vty_out (vty, "ip route %s/%d", inet_ntoa (rn->p.u.prefix4),
                 rn->p.prefixlen);

        switch (si->type)
          {
            case STATIC_IPV4_GATEWAY:
              vty_out (vty, " %s", inet_ntoa (si->gate.ipv4));
              break;
            case STATIC_IPV4_IFNAME:
              vty_out (vty, " %s", si->gate.ifname);
              break;
            case STATIC_IPV4_BLACKHOLE:
              vty_out (vty, " Null0");
              break;
          }
        
        /* flags are incompatible with STATIC_IPV4_BLACKHOLE */
        if (si->type != STATIC_IPV4_BLACKHOLE)
          {
            if (CHECK_FLAG(si->flags, ZEBRA_FLAG_REJECT))
              vty_out (vty, " %s", "reject");

            if (CHECK_FLAG(si->flags, ZEBRA_FLAG_BLACKHOLE))
              vty_out (vty, " %s", "blackhole");
          }

        if (si->distance != ZEBRA_STATIC_DISTANCE_DEFAULT)
          vty_out (vty, " %d", si->distance);

        vty_out (vty, "%s", VTY_NEWLINE);

        write = 1;
      }
  return write;
}

#ifdef HAVE_IPV6
/* General fucntion for IPv6 static route. */
static int
static_ipv6_func (struct vty *vty, int add_cmd, const char *dest_str,
		  const char *gate_str, const char *ifname,
		  const char *flag_str, const char *distance_str)
{
  int ret;
  u_char distance;
  struct prefix p;
  struct in6_addr *gate = NULL;
  struct in6_addr gate_addr;
  u_char type = 0;
  int table = 0;
  u_char flag = 0;
  
  ret = str2prefix (dest_str, &p);
  if (ret <= 0)
    {
      vty_out (vty, "%% Malformed address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  /* Apply mask for given prefix. */
  apply_mask (&p);

  /* Route flags */
  if (flag_str) {
    switch(flag_str[0]) {
      case 'r':
      case 'R': /* XXX */
        SET_FLAG (flag, ZEBRA_FLAG_REJECT);
        break;
      case 'b':
      case 'B': /* XXX */
        SET_FLAG (flag, ZEBRA_FLAG_BLACKHOLE);
        break;
      default:
        vty_out (vty, "%% Malformed flag %s %s", flag_str, VTY_NEWLINE);
        return CMD_WARNING;
    }
  }

  /* Administrative distance. */
  if (distance_str)
    distance = atoi (distance_str);
  else
    distance = ZEBRA_STATIC_DISTANCE_DEFAULT;

  /* When gateway is valid IPv6 addrees, then gate is treated as
     nexthop address other case gate is treated as interface name. */
  ret = inet_pton (AF_INET6, gate_str, &gate_addr);

  if (ifname)
    {
      /* When ifname is specified.  It must be come with gateway
         address. */
      if (ret != 1)
	{
	  vty_out (vty, "%% Malformed address%s", VTY_NEWLINE);
	  return CMD_WARNING;
	}
      type = STATIC_IPV6_GATEWAY_IFNAME;
      gate = &gate_addr;
    }
  else
    {
      if (ret == 1)
	{
	  type = STATIC_IPV6_GATEWAY;
	  gate = &gate_addr;
	}
      else
	{
	  type = STATIC_IPV6_IFNAME;
	  ifname = gate_str;
	}
    }

  if (add_cmd)
    static_add_ipv6 (&p, type, gate, ifname, flag, distance, table);
  else
    static_delete_ipv6 (&p, type, gate, ifname, distance, table);

  return CMD_SUCCESS;
}

DEFUN (ipv6_route,
       ipv6_route_cmd,
       "ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE)",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], NULL, NULL, NULL);
}

DEFUN (ipv6_route_flags,
       ipv6_route_flags_cmd,
       "ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], NULL, argv[2], NULL);
}

DEFUN (ipv6_route_ifname,
       ipv6_route_ifname_cmd,
       "ipv6 route X:X::X:X/M X:X::X:X INTERFACE",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], argv[2], NULL, NULL);
}

DEFUN (ipv6_route_ifname_flags,
       ipv6_route_ifname_flags_cmd,
       "ipv6 route X:X::X:X/M X:X::X:X INTERFACE (reject|blackhole)",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], argv[2], argv[3], NULL);
}

DEFUN (ipv6_route_pref,
       ipv6_route_pref_cmd,
       "ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], NULL, NULL, argv[2]);
}

DEFUN (ipv6_route_flags_pref,
       ipv6_route_flags_pref_cmd,
       "ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], NULL, argv[2], argv[3]);
}

DEFUN (ipv6_route_ifname_pref,
       ipv6_route_ifname_pref_cmd,
       "ipv6 route X:X::X:X/M X:X::X:X INTERFACE <1-255>",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], argv[2], NULL, argv[3]);
}

DEFUN (ipv6_route_ifname_flags_pref,
       ipv6_route_ifname_flags_pref_cmd,
       "ipv6 route X:X::X:X/M X:X::X:X INTERFACE (reject|blackhole) <1-255>",
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 1, argv[0], argv[1], argv[2], argv[3], argv[4]);
}

DEFUN (no_ipv6_route,
       no_ipv6_route_cmd,
       "no ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n")
{
  return static_ipv6_func (vty, 0, argv[0], argv[1], NULL, NULL, NULL);
}

ALIAS (no_ipv6_route,
       no_ipv6_route_flags_cmd,
       "no ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")

DEFUN (no_ipv6_route_ifname,
       no_ipv6_route_ifname_cmd,
       "no ipv6 route X:X::X:X/M X:X::X:X INTERFACE",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n")
{
  return static_ipv6_func (vty, 0, argv[0], argv[1], argv[2], NULL, NULL);
}

ALIAS (no_ipv6_route_ifname,
       no_ipv6_route_ifname_flags_cmd,
       "no ipv6 route X:X::X:X/M X:X::X:X INTERFACE (reject|blackhole)",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n")

DEFUN (no_ipv6_route_pref,
       no_ipv6_route_pref_cmd,
       "no ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 0, argv[0], argv[1], NULL, NULL, argv[2]);
}

DEFUN (no_ipv6_route_flags_pref,
       no_ipv6_route_flags_pref_cmd,
       "no ipv6 route X:X::X:X/M (X:X::X:X|INTERFACE) (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this prefix\n")
{
  /* We do not care about argv[2] */
  return static_ipv6_func (vty, 0, argv[0], argv[1], NULL, argv[2], argv[3]);
}

DEFUN (no_ipv6_route_ifname_pref,
       no_ipv6_route_ifname_pref_cmd,
       "no ipv6 route X:X::X:X/M X:X::X:X INTERFACE <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 0, argv[0], argv[1], argv[2], NULL, argv[3]);
}

DEFUN (no_ipv6_route_ifname_flags_pref,
       no_ipv6_route_ifname_flags_pref_cmd,
       "no ipv6 route X:X::X:X/M X:X::X:X INTERFACE (reject|blackhole) <1-255>",
       NO_STR
       IP_STR
       "Establish static routes\n"
       "IPv6 destination prefix (e.g. 3ffe:506::/32)\n"
       "IPv6 gateway address\n"
       "IPv6 gateway interface name\n"
       "Emit an ICMP unreachable when matched\n"
       "Silently discard pkts when matched\n"
       "Distance value for this prefix\n")
{
  return static_ipv6_func (vty, 0, argv[0], argv[1], argv[2], argv[3], argv[4]);
}

/* New RIB.  Detailed information for IPv6 route. */
static void
vty_show_ipv6_route_detail (struct vty *vty, struct route_node *rn)
{
  struct rib *rib;
  struct nexthop *nexthop;
  char buf[BUFSIZ];

  for (rib = rn->info; rib; rib = rib->next)
    {
      vty_out (vty, "Routing entry for %s/%d%s", 
	       inet_ntop (AF_INET6, &rn->p.u.prefix6, buf, BUFSIZ),
	       rn->p.prefixlen,
	       VTY_NEWLINE);
      vty_out (vty, "  Known via \"%s\"", route_type_str (rib->type));
      vty_out (vty, ", distance %d, metric %d", rib->distance, rib->metric);
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED))
	vty_out (vty, ", best");
      if (rib->refcnt)
	vty_out (vty, ", refcnt %ld", rib->refcnt);
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE))
       vty_out (vty, ", blackhole");
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_REJECT))
       vty_out (vty, ", reject");
      vty_out (vty, "%s", VTY_NEWLINE);

#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7
      if (rib->type == ZEBRA_ROUTE_RIPNG
	  || rib->type == ZEBRA_ROUTE_OSPF6
	  || rib->type == ZEBRA_ROUTE_ISIS
	  || rib->type == ZEBRA_ROUTE_BGP)
	{
	  time_t uptime;
	  struct tm *tm;

	  uptime = time (NULL);
	  uptime -= rib->uptime;
	  tm = gmtime (&uptime);

	  vty_out (vty, "  Last update ");

	  if (uptime < ONE_DAY_SECOND)
	    vty_out (vty,  "%02d:%02d:%02d", 
		     tm->tm_hour, tm->tm_min, tm->tm_sec);
	  else if (uptime < ONE_WEEK_SECOND)
	    vty_out (vty, "%dd%02dh%02dm", 
		     tm->tm_yday, tm->tm_hour, tm->tm_min);
	  else
	    vty_out (vty, "%02dw%dd%02dh", 
		     tm->tm_yday/7,
		     tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
	  vty_out (vty, " ago%s", VTY_NEWLINE);
	}

      for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
	{
	  vty_out (vty, "  %c",
		   CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB) ? '*' : ' ');

	  switch (nexthop->type)
	    {
	    case NEXTHOP_TYPE_IPV6:
	    case NEXTHOP_TYPE_IPV6_IFINDEX:
	    case NEXTHOP_TYPE_IPV6_IFNAME:
	      vty_out (vty, " %s",
		       inet_ntop (AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ));
	      if (nexthop->type == NEXTHOP_TYPE_IPV6_IFNAME)
		vty_out (vty, ", %s", nexthop->ifname);
	      else if (nexthop->ifindex)
		vty_out (vty, ", via %s", ifindex2ifname (nexthop->ifindex));
	      break;
	    case NEXTHOP_TYPE_IFINDEX:
	      vty_out (vty, " directly connected, %s",
		       ifindex2ifname (nexthop->ifindex));
	      break;
	    case NEXTHOP_TYPE_IFNAME:
	      vty_out (vty, " directly connected, %s",
		       nexthop->ifname);
	      break;
	    default:
	      break;
	    }
	  if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
	    vty_out (vty, " inactive");

	  if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
	    {
	      vty_out (vty, " (recursive");
		
	      switch (nexthop->rtype)
		{
		case NEXTHOP_TYPE_IPV6:
		case NEXTHOP_TYPE_IPV6_IFINDEX:
		case NEXTHOP_TYPE_IPV6_IFNAME:
		  vty_out (vty, " via %s)",
			   inet_ntop (AF_INET6, &nexthop->rgate.ipv6,
				      buf, BUFSIZ));
		  if (nexthop->rifindex)
		    vty_out (vty, ", %s", ifindex2ifname (nexthop->rifindex));
		  break;
		case NEXTHOP_TYPE_IFINDEX:
		case NEXTHOP_TYPE_IFNAME:
		  vty_out (vty, " is directly connected, %s)",
			   ifindex2ifname (nexthop->rifindex));
		  break;
		default:
		  break;
		}
	    }
	  vty_out (vty, "%s", VTY_NEWLINE);
	}
      vty_out (vty, "%s", VTY_NEWLINE);
    }
}

static void
vty_show_ipv6_route (struct vty *vty, struct route_node *rn,
		     struct rib *rib)
{
  struct nexthop *nexthop;
  int len = 0;
  char buf[BUFSIZ];

  /* Nexthop information. */
  for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
    {
      if (nexthop == rib->nexthop)
	{
	  /* Prefix information. */
	  len = vty_out (vty, "%c%c%c %s/%d",
			 route_type_char (rib->type),
			 CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)
			 ? '>' : ' ',
			 CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)
			 ? '*' : ' ',
			 inet_ntop (AF_INET6, &rn->p.u.prefix6, buf, BUFSIZ),
			 rn->p.prefixlen);

	  /* Distance and metric display. */
	  if (rib->type != ZEBRA_ROUTE_CONNECT 
	      && rib->type != ZEBRA_ROUTE_KERNEL)
	    len += vty_out (vty, " [%d/%d]", rib->distance,
			    rib->metric);
	}
      else
	vty_out (vty, "  %c%*c",
		 CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)
		 ? '*' : ' ',
		 len - 3, ' ');

      switch (nexthop->type)
	{
	case NEXTHOP_TYPE_IPV6:
	case NEXTHOP_TYPE_IPV6_IFINDEX:
	case NEXTHOP_TYPE_IPV6_IFNAME:
	  vty_out (vty, " via %s",
		   inet_ntop (AF_INET6, &nexthop->gate.ipv6, buf, BUFSIZ));
	  if (nexthop->type == NEXTHOP_TYPE_IPV6_IFNAME)
	    vty_out (vty, ", %s", nexthop->ifname);
	  else if (nexthop->ifindex)
	    vty_out (vty, ", %s", ifindex2ifname (nexthop->ifindex));
	  break;
	case NEXTHOP_TYPE_IFINDEX:
	  vty_out (vty, " is directly connected, %s",
		   ifindex2ifname (nexthop->ifindex));
	  break;
	case NEXTHOP_TYPE_IFNAME:
	  vty_out (vty, " is directly connected, %s",
		   nexthop->ifname);
	  break;
	default:
	  break;
	}
      if (! CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
	vty_out (vty, " inactive");

      if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
	{
	  vty_out (vty, " (recursive");
		
	  switch (nexthop->rtype)
	    {
	    case NEXTHOP_TYPE_IPV6:
	    case NEXTHOP_TYPE_IPV6_IFINDEX:
	    case NEXTHOP_TYPE_IPV6_IFNAME:
	      vty_out (vty, " via %s)",
		       inet_ntop (AF_INET6, &nexthop->rgate.ipv6,
				  buf, BUFSIZ));
	      if (nexthop->rifindex)
		vty_out (vty, ", %s", ifindex2ifname (nexthop->rifindex));
	      break;
	    case NEXTHOP_TYPE_IFINDEX:
	    case NEXTHOP_TYPE_IFNAME:
	      vty_out (vty, " is directly connected, %s)",
		       ifindex2ifname (nexthop->rifindex));
	      break;
	    default:
	      break;
	    }
	}

      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE))
       vty_out (vty, ", bh");
      if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_REJECT))
       vty_out (vty, ", rej");
      
      if (rib->type == ZEBRA_ROUTE_RIPNG
	  || rib->type == ZEBRA_ROUTE_OSPF6
	  || rib->type == ZEBRA_ROUTE_ISIS
	  || rib->type == ZEBRA_ROUTE_BGP)
	{
	  time_t uptime;
	  struct tm *tm;

	  uptime = time (NULL);
	  uptime -= rib->uptime;
	  tm = gmtime (&uptime);

#define ONE_DAY_SECOND 60*60*24
#define ONE_WEEK_SECOND 60*60*24*7

	  if (uptime < ONE_DAY_SECOND)
	    vty_out (vty,  ", %02d:%02d:%02d", 
		     tm->tm_hour, tm->tm_min, tm->tm_sec);
	  else if (uptime < ONE_WEEK_SECOND)
	    vty_out (vty, ", %dd%02dh%02dm", 
		     tm->tm_yday, tm->tm_hour, tm->tm_min);
	  else
	    vty_out (vty, ", %02dw%dd%02dh", 
		     tm->tm_yday/7,
		     tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour);
	}
      vty_out (vty, "%s", VTY_NEWLINE);
    }
}

#define SHOW_ROUTE_V6_HEADER "Codes: K - kernel route, C - connected, S - static, R - RIPng, O - OSPFv3,%s       I - ISIS, B - BGP, * - FIB route.%s%s"

DEFUN (show_ipv6_route,
       show_ipv6_route_cmd,
       "show ipv6 route",
       SHOW_STR
       IP_STR
       "IPv6 routing table\n")
{
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  int first = 1;

  table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show all IPv6 route. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      {
	if (first)
	  {
	    vty_out (vty, SHOW_ROUTE_V6_HEADER, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
	    first = 0;
	  }
	vty_show_ipv6_route (vty, rn, rib);
      }
  return CMD_SUCCESS;
}

DEFUN (show_ipv6_route_prefix_longer,
       show_ipv6_route_prefix_longer_cmd,
       "show ipv6 route X:X::X:X/M longer-prefixes",
       SHOW_STR
       IP_STR
       "IPv6 routing table\n"
       "IPv6 prefix\n"
       "Show route matching the specified Network/Mask pair only\n")
{
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  struct prefix p;
  int ret;
  int first = 1;

  table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  ret = str2prefix (argv[0], &p);
  if (! ret)
    {
      vty_out (vty, "%% Malformed Prefix%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  /* Show matched type IPv6 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      if (prefix_match (&p, &rn->p))
	{
	  if (first)
	    {
	      vty_out (vty, SHOW_ROUTE_V6_HEADER, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
	      first = 0;
	    }
	  vty_show_ipv6_route (vty, rn, rib);
	}
  return CMD_SUCCESS;
}

DEFUN (show_ipv6_route_protocol,
       show_ipv6_route_protocol_cmd,
       "show ipv6 route (bgp|connected|isis|kernel|ospf6|ripng|static)",
       SHOW_STR
       IP_STR
       "IP routing table\n"
       "Border Gateway Protocol (BGP)\n"
       "Connected\n"
       "ISO IS-IS (ISIS)\n"
       "Kernel\n"
       "Open Shortest Path First (OSPFv3)\n"
       "Routing Information Protocol (RIPng)\n"
       "Static routes\n")
{
  int type;
  struct route_table *table;
  struct route_node *rn;
  struct rib *rib;
  int first = 1;

  if (strncmp (argv[0], "b", 1) == 0)
    type = ZEBRA_ROUTE_BGP;
  else if (strncmp (argv[0], "c", 1) == 0)
    type = ZEBRA_ROUTE_CONNECT;
  else if (strncmp (argv[0], "k", 1) ==0)
    type = ZEBRA_ROUTE_KERNEL;
  else if (strncmp (argv[0], "o", 1) == 0)
    type = ZEBRA_ROUTE_OSPF6;
  else if (strncmp (argv[0], "i", 1) == 0)
    type = ZEBRA_ROUTE_ISIS;
  else if (strncmp (argv[0], "r", 1) == 0)
    type = ZEBRA_ROUTE_RIPNG;
  else if (strncmp (argv[0], "s", 1) == 0)
    type = ZEBRA_ROUTE_STATIC;
  else 
    {
      vty_out (vty, "Unknown route type%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  
  table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  /* Show matched type IPv6 routes. */
  for (rn = route_top (table); rn; rn = route_next (rn))
    for (rib = rn->info; rib; rib = rib->next)
      if (rib->type == type)
	{
	  if (first)
	    {
	      vty_out (vty, SHOW_ROUTE_V6_HEADER, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
	      first = 0;
	    }
	  vty_show_ipv6_route (vty, rn, rib);
	}
  return CMD_SUCCESS;
}

DEFUN (show_ipv6_route_addr,
       show_ipv6_route_addr_cmd,
       "show ipv6 route X:X::X:X",
       SHOW_STR
       IP_STR
       "IPv6 routing table\n"
       "IPv6 Address\n")
{
  int ret;
  struct prefix_ipv6 p;
  struct route_table *table;
  struct route_node *rn;

  ret = str2prefix_ipv6 (argv[0], &p);
  if (ret <= 0)
    {
      vty_out (vty, "Malformed IPv6 address%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  rn = route_node_match (table, (struct prefix *) &p);
  if (! rn)
    {
      vty_out (vty, "%% Network not in table%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  vty_show_ipv6_route_detail (vty, rn);

  route_unlock_node (rn);

  return CMD_SUCCESS;
}

DEFUN (show_ipv6_route_prefix,
       show_ipv6_route_prefix_cmd,
       "show ipv6 route X:X::X:X/M",
       SHOW_STR
       IP_STR
       "IPv6 routing table\n"
       "IPv6 prefix\n")
{
  int ret;
  struct prefix_ipv6 p;
  struct route_table *table;
  struct route_node *rn;

  ret = str2prefix_ipv6 (argv[0], &p);
  if (ret <= 0)
    {
      vty_out (vty, "Malformed IPv6 prefix%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  table = vrf_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! table)
    return CMD_SUCCESS;

  rn = route_node_match (table, (struct prefix *) &p);
  if (! rn || rn->p.prefixlen != p.prefixlen)
    {
      vty_out (vty, "%% Network not in table%s", VTY_NEWLINE);
      return CMD_WARNING;
    }

  vty_show_ipv6_route_detail (vty, rn);

  route_unlock_node (rn);

  return CMD_SUCCESS;
}


/* Write IPv6 static route configuration. */
static int
static_config_ipv6 (struct vty *vty)
{
  struct route_node *rn;
  struct static_ipv6 *si;  
  int write;
  char buf[BUFSIZ];
  struct route_table *stable;

  write = 0;

  /* Lookup table.  */
  stable = vrf_static_table (AFI_IP6, SAFI_UNICAST, 0);
  if (! stable)
    return -1;

  for (rn = route_top (stable); rn; rn = route_next (rn))
    for (si = rn->info; si; si = si->next)
      {
	vty_out (vty, "ipv6 route %s/%d",
		 inet_ntop (AF_INET6, &rn->p.u.prefix6, buf, BUFSIZ),
		 rn->p.prefixlen);

	switch (si->type)
	  {
	  case STATIC_IPV6_GATEWAY:
	    vty_out (vty, " %s", inet_ntop (AF_INET6, &si->ipv6, buf, BUFSIZ));
	    break;
	  case STATIC_IPV6_IFNAME:
	    vty_out (vty, " %s", si->ifname);
	    break;
	  case STATIC_IPV6_GATEWAY_IFNAME:
	    vty_out (vty, " %s %s",
		     inet_ntop (AF_INET6, &si->ipv6, buf, BUFSIZ), si->ifname);
	    break;
	  }

       if (CHECK_FLAG(si->flags, ZEBRA_FLAG_REJECT))
               vty_out (vty, " %s", "reject");

       if (CHECK_FLAG(si->flags, ZEBRA_FLAG_BLACKHOLE))
               vty_out (vty, " %s", "blackhole");

	if (si->distance != ZEBRA_STATIC_DISTANCE_DEFAULT)
	  vty_out (vty, " %d", si->distance);
	vty_out (vty, "%s", VTY_NEWLINE);

	write = 1;
      }
  return write;
}
#endif /* HAVE_IPV6 */

/* Static ip route configuration write function. */
static int
zebra_ip_config (struct vty *vty)
{
  int write = 0;

  write += static_config_ipv4 (vty);
#ifdef HAVE_IPV6
  write += static_config_ipv6 (vty);
#endif /* HAVE_IPV6 */

  return write;
}

/* IP node for static routes. */
struct cmd_node ip_node = { IP_NODE,  "",  1 };

/* Route VTY.  */
void
zebra_vty_init (void)
{
  install_node (&ip_node, zebra_ip_config);

  install_element (CONFIG_NODE, &ip_route_cmd);
  install_element (CONFIG_NODE, &ip_route_flags_cmd);
  install_element (CONFIG_NODE, &ip_route_flags2_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_flags_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_flags2_cmd);
  install_element (CONFIG_NODE, &no_ip_route_cmd);
  install_element (CONFIG_NODE, &no_ip_route_flags_cmd);
  install_element (CONFIG_NODE, &no_ip_route_flags2_cmd);
  install_element (CONFIG_NODE, &no_ip_route_mask_cmd);
  install_element (CONFIG_NODE, &no_ip_route_mask_flags_cmd);
  install_element (CONFIG_NODE, &no_ip_route_mask_flags2_cmd);
  install_element (CONFIG_NODE, &ip_route_distance_cmd);
  install_element (CONFIG_NODE, &ip_route_flags_distance_cmd);
  install_element (CONFIG_NODE, &ip_route_flags_distance2_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_distance_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_flags_distance_cmd);
  install_element (CONFIG_NODE, &ip_route_mask_flags_distance2_cmd);
  install_element (CONFIG_NODE, &no_ip_route_distance_cmd);
  install_element (CONFIG_NODE, &no_ip_route_flags_distance_cmd);
  install_element (CONFIG_NODE, &no_ip_route_flags_distance2_cmd);
  install_element (CONFIG_NODE, &no_ip_route_mask_flags_distance_cmd);
  install_element (CONFIG_NODE, &no_ip_route_mask_flags_distance2_cmd);

  install_element (VIEW_NODE, &show_ip_route_cmd);
  install_element (VIEW_NODE, &show_ip_route_addr_cmd);
  install_element (VIEW_NODE, &show_ip_route_prefix_cmd);
  install_element (VIEW_NODE, &show_ip_route_prefix_longer_cmd);
  install_element (VIEW_NODE, &show_ip_route_protocol_cmd);
  install_element (VIEW_NODE, &show_ip_route_supernets_cmd);
  install_element (ENABLE_NODE, &show_ip_route_cmd);
  install_element (ENABLE_NODE, &show_ip_route_addr_cmd);
  install_element (ENABLE_NODE, &show_ip_route_prefix_cmd);
  install_element (ENABLE_NODE, &show_ip_route_prefix_longer_cmd);
  install_element (ENABLE_NODE, &show_ip_route_protocol_cmd);
  install_element (ENABLE_NODE, &show_ip_route_supernets_cmd);

#if 0
  install_element (VIEW_NODE, &show_ip_route_summary_cmd);
  install_element (ENABLE_NODE, &show_ip_route_summary_cmd);
#endif /* 0 */

#ifdef HAVE_IPV6
  install_element (CONFIG_NODE, &ipv6_route_cmd);
  install_element (CONFIG_NODE, &ipv6_route_flags_cmd);
  install_element (CONFIG_NODE, &ipv6_route_ifname_cmd);
  install_element (CONFIG_NODE, &ipv6_route_ifname_flags_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_flags_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_ifname_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_ifname_flags_cmd);
  install_element (CONFIG_NODE, &ipv6_route_pref_cmd);
  install_element (CONFIG_NODE, &ipv6_route_flags_pref_cmd);
  install_element (CONFIG_NODE, &ipv6_route_ifname_pref_cmd);
  install_element (CONFIG_NODE, &ipv6_route_ifname_flags_pref_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_pref_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_flags_pref_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_ifname_pref_cmd);
  install_element (CONFIG_NODE, &no_ipv6_route_ifname_flags_pref_cmd);
  install_element (VIEW_NODE, &show_ipv6_route_cmd);
  install_element (VIEW_NODE, &show_ipv6_route_protocol_cmd);
  install_element (VIEW_NODE, &show_ipv6_route_addr_cmd);
  install_element (VIEW_NODE, &show_ipv6_route_prefix_cmd);
  install_element (VIEW_NODE, &show_ipv6_route_prefix_longer_cmd);
  install_element (ENABLE_NODE, &show_ipv6_route_cmd);
  install_element (ENABLE_NODE, &show_ipv6_route_protocol_cmd);
  install_element (ENABLE_NODE, &show_ipv6_route_addr_cmd);
  install_element (ENABLE_NODE, &show_ipv6_route_prefix_cmd);
  install_element (ENABLE_NODE, &show_ipv6_route_prefix_longer_cmd);
#endif /* HAVE_IPV6 */
}