--- embedaddon/quagga/zebra/rtadv.c	2012/02/21 17:26:11	1.1.1.1
+++ embedaddon/quagga/zebra/rtadv.c	2012/10/09 09:22:29	1.1.1.2
@@ -163,6 +163,7 @@ rtadv_send_packet (int sock, struct interface *ifp)
   struct rtadv_prefix *rprefix;
   u_char all_nodes_addr[] = {0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
   struct listnode *node;
+  u_int16_t pkt_RouterLifetime;
 
   /*
    * Allocate control message bufffer.  This is dynamic because
@@ -190,7 +191,7 @@ rtadv_send_packet (int sock, struct interface *ifp)
   addr.sin6_len = sizeof (struct sockaddr_in6);
 #endif /* SIN6_LEN */
   addr.sin6_port = htons (IPPROTO_ICMPV6);
-  memcpy (&addr.sin6_addr, all_nodes_addr, sizeof (struct in6_addr));
+  IPV6_ADDR_COPY (&addr.sin6_addr, all_nodes_addr);
 
   /* Fetch interface information. */
   zif = ifp->info;
@@ -215,13 +216,32 @@ rtadv_send_packet (int sock, struct interface *ifp)
     rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER;
   if (zif->rtadv.AdvHomeAgentFlag)
     rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT;
-  rtadv->nd_ra_router_lifetime = htons (zif->rtadv.AdvDefaultLifetime);
+  /* Note that according to Neighbor Discovery (RFC 4861 [18]),
+   * AdvDefaultLifetime is by default based on the value of
+   * MaxRtrAdvInterval.  AdvDefaultLifetime is used in the Router Lifetime
+   * field of Router Advertisements.  Given that this field is expressed
+   * in seconds, a small MaxRtrAdvInterval value can result in a zero
+   * value for this field.  To prevent this, routers SHOULD keep
+   * AdvDefaultLifetime in at least one second, even if the use of
+   * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */
+  pkt_RouterLifetime = zif->rtadv.AdvDefaultLifetime != -1 ?
+    zif->rtadv.AdvDefaultLifetime :
+    MAX (1, 0.003 * zif->rtadv.MaxRtrAdvInterval);
+  rtadv->nd_ra_router_lifetime = htons (pkt_RouterLifetime);
   rtadv->nd_ra_reachable = htonl (zif->rtadv.AdvReachableTime);
   rtadv->nd_ra_retransmit = htonl (0);
 
   len = sizeof (struct nd_router_advert);
 
-  if (zif->rtadv.AdvHomeAgentFlag)
+  /* If both the Home Agent Preference and Home Agent Lifetime are set to
+   * their default values specified above, this option SHOULD NOT be
+   * included in the Router Advertisement messages sent by this home
+   * agent. -- RFC6275, 7.4 */
+  if
+  (
+    zif->rtadv.AdvHomeAgentFlag &&
+    (zif->rtadv.HomeAgentPreference || zif->rtadv.HomeAgentLifetime != -1)
+  )
     {
       struct nd_opt_homeagent_info *ndopt_hai = 
 	(struct nd_opt_homeagent_info *)(buf + len);
@@ -229,7 +249,17 @@ rtadv_send_packet (int sock, struct interface *ifp)
       ndopt_hai->nd_opt_hai_len = 1;
       ndopt_hai->nd_opt_hai_reserved = 0;
       ndopt_hai->nd_opt_hai_preference = htons(zif->rtadv.HomeAgentPreference);
-      ndopt_hai->nd_opt_hai_lifetime = htons(zif->rtadv.HomeAgentLifetime);
+      /* 16-bit unsigned integer.  The lifetime associated with the home
+       * agent in units of seconds.  The default value is the same as the
+       * Router Lifetime, as specified in the main body of the Router
+       * Advertisement.  The maximum value corresponds to 18.2 hours.  A
+       * value of 0 MUST NOT be used. -- RFC6275, 7.5 */
+      ndopt_hai->nd_opt_hai_lifetime = htons
+      (
+        zif->rtadv.HomeAgentLifetime != -1 ?
+        zif->rtadv.HomeAgentLifetime :
+        MAX (1, pkt_RouterLifetime) /* 0 is OK for RL, but not for HAL*/
+      );
       len += sizeof(struct nd_opt_homeagent_info);
     }
 
@@ -267,8 +297,7 @@ rtadv_send_packet (int sock, struct interface *ifp)
       pinfo->nd_opt_pi_preferred_time = htonl (rprefix->AdvPreferredLifetime);
       pinfo->nd_opt_pi_reserved2 = 0;
 
-      memcpy (&pinfo->nd_opt_pi_prefix, &rprefix->prefix.u.prefix6,
-	      sizeof (struct in6_addr));
+      IPV6_ADDR_COPY (&pinfo->nd_opt_pi_prefix, &rprefix->prefix.prefix);
 
 #ifdef DEBUG
       {
@@ -319,6 +348,17 @@ rtadv_send_packet (int sock, struct interface *ifp)
     }
 #endif /* HAVE_STRUCT_SOCKADDR_DL */
 
+  /* MTU */
+  if (zif->rtadv.AdvLinkMTU)
+    {
+      struct nd_opt_mtu * opt = (struct nd_opt_mtu *) (buf + len);
+      opt->nd_opt_mtu_type = ND_OPT_MTU;
+      opt->nd_opt_mtu_len = 1;
+      opt->nd_opt_mtu_reserved = 0;
+      opt->nd_opt_mtu_mtu = htonl (zif->rtadv.AdvLinkMTU);
+      len += sizeof (struct nd_opt_mtu);
+    }
+
   msg.msg_name = (void *) &addr;
   msg.msg_namelen = sizeof (struct sockaddr_in6);
   msg.msg_iov = &iov;
@@ -368,7 +408,7 @@ rtadv_timer (struct thread *thread)
 
   for (ALL_LIST_ELEMENTS (iflist, node, nnode, ifp))
     {
-      if (if_is_loopback (ifp))
+      if (if_is_loopback (ifp) || ! if_is_operative (ifp))
 	continue;
 
       zif = ifp->info;
@@ -378,6 +418,8 @@ rtadv_timer (struct thread *thread)
 	  zif->rtadv.AdvIntervalTimer -= period;
 	  if (zif->rtadv.AdvIntervalTimer <= 0)
 	    {
+	      /* FIXME: using MaxRtrAdvInterval each time isn't what section
+	         6.2.4 of RFC4861 tells to do. */
 	      zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval;
 	      rtadv_send_packet (rtadv->sock, ifp);
 	    }
@@ -552,19 +594,19 @@ rtadv_prefix_free (struct rtadv_prefix *rtadv_prefix)
 }
 
 static struct rtadv_prefix *
-rtadv_prefix_lookup (struct list *rplist, struct prefix *p)
+rtadv_prefix_lookup (struct list *rplist, struct prefix_ipv6 *p)
 {
   struct listnode *node;
   struct rtadv_prefix *rprefix;
 
   for (ALL_LIST_ELEMENTS_RO (rplist, node, rprefix))
-    if (prefix_same (&rprefix->prefix, p))
+    if (prefix_same ((struct prefix *) &rprefix->prefix, (struct prefix *) p))
       return rprefix;
   return NULL;
 }
 
 static struct rtadv_prefix *
-rtadv_prefix_get (struct list *rplist, struct prefix *p)
+rtadv_prefix_get (struct list *rplist, struct prefix_ipv6 *p)
 {
   struct rtadv_prefix *rprefix;
   
@@ -573,7 +615,7 @@ rtadv_prefix_get (struct list *rplist, struct prefix *
     return rprefix;
 
   rprefix = rtadv_prefix_new ();
-  memcpy (&rprefix->prefix, p, sizeof (struct prefix));
+  memcpy (&rprefix->prefix, p, sizeof (struct prefix_ipv6));
   listnode_add (rplist, rprefix);
 
   return rprefix;
@@ -681,27 +723,23 @@ DEFUN (no_ipv6_nd_suppress_ra,
 
 DEFUN (ipv6_nd_ra_interval_msec,
        ipv6_nd_ra_interval_msec_cmd,
-       "ipv6 nd ra-interval msec MILLISECONDS",
+       "ipv6 nd ra-interval msec <70-1800000>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Router Advertisement interval\n"
        "Router Advertisement interval in milliseconds\n")
 {
-  int interval;
-  struct interface *ifp;
-  struct zebra_if *zif;
+  unsigned interval;
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
 
-  ifp = (struct interface *) vty->index;
-  zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("router advertisement interval", interval, argv[0], 70, 1800000);
+  if ((zif->rtadv.AdvDefaultLifetime != -1 && interval > (unsigned)zif->rtadv.AdvDefaultLifetime * 1000))
+  {
+    vty_out (vty, "This ra-interval would conflict with configured ra-lifetime!%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
 
-  interval = atoi (argv[0]);
-
-  if (interval <= 0)
-    {
-      vty_out (vty, "Invalid Router Advertisement Interval%s", VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
   if (zif->rtadv.MaxRtrAdvInterval % 1000)
     rtadv->adv_msec_if_count--;
 
@@ -717,27 +755,23 @@ DEFUN (ipv6_nd_ra_interval_msec,
 
 DEFUN (ipv6_nd_ra_interval,
        ipv6_nd_ra_interval_cmd,
-       "ipv6 nd ra-interval SECONDS",
+       "ipv6 nd ra-interval <1-1800>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Router Advertisement interval\n"
        "Router Advertisement interval in seconds\n")
 {
-  int interval;
-  struct interface *ifp;
-  struct zebra_if *zif;
+  unsigned interval;
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
 
-  ifp = (struct interface *) vty->index;
-  zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("router advertisement interval", interval, argv[0], 1, 1800);
+  if ((zif->rtadv.AdvDefaultLifetime != -1 && interval > (unsigned)zif->rtadv.AdvDefaultLifetime))
+  {
+    vty_out (vty, "This ra-interval would conflict with configured ra-lifetime!%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
 
-  interval = atoi (argv[0]);
-
-  if (interval <= 0)
-    {
-      vty_out (vty, "Invalid Router Advertisement Interval%s", VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
   if (zif->rtadv.MaxRtrAdvInterval % 1000)
     rtadv->adv_msec_if_count--;
 	
@@ -775,13 +809,30 @@ DEFUN (no_ipv6_nd_ra_interval,
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_ra_interval,
+       no_ipv6_nd_ra_interval_val_cmd,
+       "no ipv6 nd ra-interval <1-1800>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Router Advertisement interval\n")
+
+ALIAS (no_ipv6_nd_ra_interval,
+       no_ipv6_nd_ra_interval_msec_val_cmd,
+       "no ipv6 nd ra-interval msec <1-1800000>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Router Advertisement interval\n"
+       "Router Advertisement interval in milliseconds\n")
+
 DEFUN (ipv6_nd_ra_lifetime,
        ipv6_nd_ra_lifetime_cmd,
-       "ipv6 nd ra-lifetime SECONDS",
+       "ipv6 nd ra-lifetime <0-9000>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Router lifetime\n"
-       "Router lifetime in seconds\n")
+       "Router lifetime in seconds (0 stands for a non-default gw)\n")
 {
   int lifetime;
   struct interface *ifp;
@@ -790,11 +841,15 @@ DEFUN (ipv6_nd_ra_lifetime,
   ifp = (struct interface *) vty->index;
   zif = ifp->info;
 
-  lifetime = atoi (argv[0]);
+  VTY_GET_INTEGER_RANGE ("router lifetime", lifetime, argv[0], 0, 9000);
 
-  if (lifetime < 0 || lifetime > 0xffff)
+  /* The value to be placed in the Router Lifetime field
+   * of Router Advertisements sent from the interface,
+   * in seconds.  MUST be either zero or between
+   * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */
+  if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval))
     {
-      vty_out (vty, "Invalid Router Lifetime%s", VTY_NEWLINE);
+      vty_out (vty, "This ra-lifetime would conflict with configured ra-interval%s", VTY_NEWLINE);
       return CMD_WARNING;
     }
 
@@ -817,36 +872,31 @@ DEFUN (no_ipv6_nd_ra_lifetime,
   ifp = (struct interface *) vty->index;
   zif = ifp->info;
 
-  zif->rtadv.AdvDefaultLifetime = RTADV_ADV_DEFAULT_LIFETIME;
+  zif->rtadv.AdvDefaultLifetime = -1;
 
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_ra_lifetime,
+       no_ipv6_nd_ra_lifetime_val_cmd,
+       "no ipv6 nd ra-lifetime <0-9000>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Router lifetime\n"
+       "Router lifetime in seconds (0 stands for a non-default gw)\n")
+
 DEFUN (ipv6_nd_reachable_time,
        ipv6_nd_reachable_time_cmd,
-       "ipv6 nd reachable-time MILLISECONDS",
+       "ipv6 nd reachable-time <1-3600000>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Reachable time\n"
        "Reachable time in milliseconds\n")
 {
-  u_int32_t rtime;
-  struct interface *ifp;
-  struct zebra_if *zif;
-
-  ifp = (struct interface *) vty->index;
-  zif = ifp->info;
-
-  rtime = (u_int32_t) atol (argv[0]);
-
-  if (rtime > RTADV_MAX_REACHABLE_TIME)
-    {
-      vty_out (vty, "Invalid Reachable time%s", VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  zif->rtadv.AdvReachableTime = rtime;
-
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("reachable time", zif->rtadv.AdvReachableTime, argv[0], 1, RTADV_MAX_REACHABLE_TIME);
   return CMD_SUCCESS;
 }
 
@@ -869,31 +919,26 @@ DEFUN (no_ipv6_nd_reachable_time,
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_reachable_time,
+       no_ipv6_nd_reachable_time_val_cmd,
+       "no ipv6 nd reachable-time <1-3600000>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Reachable time\n"
+       "Reachable time in milliseconds\n")
+
 DEFUN (ipv6_nd_homeagent_preference,
        ipv6_nd_homeagent_preference_cmd,
-       "ipv6 nd home-agent-preference PREFERENCE",
+       "ipv6 nd home-agent-preference <0-65535>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Home Agent preference\n"
-       "Home Agent preference value 0..65535\n")
+       "preference value (default is 0, least preferred)\n")
 {
-  u_int32_t hapref;
-  struct interface *ifp;
-  struct zebra_if *zif;
-
-  ifp = (struct interface *) vty->index;
-  zif = ifp->info;
-
-  hapref = (u_int32_t) atol (argv[0]);
-
-  if (hapref > 65535)
-    {
-      vty_out (vty, "Invalid Home Agent preference%s", VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  zif->rtadv.HomeAgentPreference = hapref;
-
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("home agent preference", zif->rtadv.HomeAgentPreference, argv[0], 0, 65535);
   return CMD_SUCCESS;
 }
 
@@ -916,31 +961,26 @@ DEFUN (no_ipv6_nd_homeagent_preference,
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_homeagent_preference,
+       no_ipv6_nd_homeagent_preference_val_cmd,
+       "no ipv6 nd home-agent-preference <0-65535>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Home Agent preference\n"
+       "preference value (default is 0, least preferred)\n")
+
 DEFUN (ipv6_nd_homeagent_lifetime,
        ipv6_nd_homeagent_lifetime_cmd,
-       "ipv6 nd home-agent-lifetime SECONDS",
+       "ipv6 nd home-agent-lifetime <0-65520>",
        "Interface IPv6 config commands\n"
        "Neighbor discovery\n"
        "Home Agent lifetime\n"
-       "Home Agent lifetime in seconds\n")
+       "Home Agent lifetime in seconds (0 to track ra-lifetime)\n")
 {
-  u_int32_t ha_ltime;
-  struct interface *ifp;
-  struct zebra_if *zif;
-
-  ifp = (struct interface *) vty->index;
-  zif = ifp->info;
-
-  ha_ltime = (u_int32_t) atol (argv[0]);
-
-  if (ha_ltime > RTADV_MAX_HALIFETIME)
-    {
-      vty_out (vty, "Invalid Home Agent Lifetime time%s", VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  zif->rtadv.HomeAgentLifetime = ha_ltime;
-
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("home agent lifetime", zif->rtadv.HomeAgentLifetime, argv[0], 0, RTADV_MAX_HALIFETIME);
   return CMD_SUCCESS;
 }
 
@@ -958,11 +998,20 @@ DEFUN (no_ipv6_nd_homeagent_lifetime,
   ifp = (struct interface *) vty->index;
   zif = ifp->info;
 
-  zif->rtadv.HomeAgentLifetime = 0;
+  zif->rtadv.HomeAgentLifetime = -1;
 
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_homeagent_lifetime,
+       no_ipv6_nd_homeagent_lifetime_val_cmd,
+       "no ipv6 nd home-agent-lifetime <0-65520>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Home Agent lifetime\n"
+       "Home Agent lifetime in seconds (0 to track ra-lifetime)\n")
+
 DEFUN (ipv6_nd_managed_config_flag,
        ipv6_nd_managed_config_flag_cmd,
        "ipv6 nd managed-config-flag",
@@ -1137,12 +1186,13 @@ DEFUN (ipv6_nd_prefix,
   ifp = (struct interface *) vty->index;
   zebra_if = ifp->info;
 
-  ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &rp.prefix);
+  ret = str2prefix_ipv6 (argv[0], &rp.prefix);
   if (!ret)
     {
       vty_out (vty, "Malformed IPv6 prefix%s", VTY_NEWLINE);
       return CMD_WARNING;
     }
+  apply_mask_ipv6 (&rp.prefix); /* RFC4861 4.6.2 */
   rp.AdvOnLinkFlag = 1;
   rp.AdvAutonomousFlag = 1;
   rp.AdvRouterAddressFlag = 0;
@@ -1364,12 +1414,13 @@ DEFUN (no_ipv6_nd_prefix,
   ifp = (struct interface *) vty->index;
   zebra_if = ifp->info;
 
-  ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &rp.prefix);
+  ret = str2prefix_ipv6 (argv[0], &rp.prefix);
   if (!ret)
     {
       vty_out (vty, "Malformed IPv6 prefix%s", VTY_NEWLINE);
       return CMD_WARNING;
     }
+  apply_mask_ipv6 (&rp.prefix); /* RFC4861 4.6.2 */
 
   ret = rtadv_prefix_reset (zebra_if, &rp);
   if (!ret)
@@ -1430,6 +1481,54 @@ DEFUN (no_ipv6_nd_router_preference,
   return CMD_SUCCESS;
 }
 
+ALIAS (no_ipv6_nd_router_preference,
+       no_ipv6_nd_router_preference_val_cmd,
+       "no ipv6 nd router-preference (high|medium|low",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Default router preference\n"
+       "High default router preference\n"
+       "Low default router preference\n"
+       "Medium default router preference (default)\n")
+
+DEFUN (ipv6_nd_mtu,
+       ipv6_nd_mtu_cmd,
+       "ipv6 nd mtu <1-65535>",
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Advertised MTU\n"
+       "MTU in bytes\n")
+{
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
+  VTY_GET_INTEGER_RANGE ("MTU", zif->rtadv.AdvLinkMTU, argv[0], 1, 65535);
+  return CMD_SUCCESS;
+}
+
+DEFUN (no_ipv6_nd_mtu,
+       no_ipv6_nd_mtu_cmd,
+       "no ipv6 nd mtu",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Advertised MTU\n")
+{
+  struct interface *ifp = (struct interface *) vty->index;
+  struct zebra_if *zif = ifp->info;
+  zif->rtadv.AdvLinkMTU = 0;
+  return CMD_SUCCESS;
+}
+
+ALIAS (no_ipv6_nd_mtu,
+       no_ipv6_nd_mtu_val_cmd,
+       "no ipv6 nd mtu <1-65535>",
+       NO_STR
+       "Interface IPv6 config commands\n"
+       "Neighbor discovery\n"
+       "Advertised MTU\n"
+       "MTU in bytes\n")
+
 /* Write configuration about router advertisement. */
 void
 rtadv_config_write (struct vty *vty, struct interface *ifp)
@@ -1463,10 +1562,24 @@ rtadv_config_write (struct vty *vty, struct interface 
       vty_out (vty, " ipv6 nd ra-interval %d%s", interval / 1000,
 	     VTY_NEWLINE);
 
-  if (zif->rtadv.AdvDefaultLifetime != RTADV_ADV_DEFAULT_LIFETIME)
+  if (zif->rtadv.AdvIntervalOption)
+    vty_out (vty, " ipv6 nd adv-interval-option%s", VTY_NEWLINE);
+
+  if (zif->rtadv.AdvDefaultLifetime != -1)
     vty_out (vty, " ipv6 nd ra-lifetime %d%s", zif->rtadv.AdvDefaultLifetime,
 	     VTY_NEWLINE);
 
+  if (zif->rtadv.HomeAgentPreference)
+    vty_out (vty, " ipv6 nd home-agent-preference %u%s",
+	     zif->rtadv.HomeAgentPreference, VTY_NEWLINE);
+
+  if (zif->rtadv.HomeAgentLifetime != -1)
+    vty_out (vty, " ipv6 nd home-agent-lifetime %u%s",
+	     zif->rtadv.HomeAgentLifetime, VTY_NEWLINE);
+
+  if (zif->rtadv.AdvHomeAgentFlag)
+    vty_out (vty, " ipv6 nd home-agent-config-flag%s", VTY_NEWLINE);
+
   if (zif->rtadv.AdvReachableTime)
     vty_out (vty, " ipv6 nd reachable-time %d%s", zif->rtadv.AdvReachableTime,
 	     VTY_NEWLINE);
@@ -1482,10 +1595,13 @@ rtadv_config_write (struct vty *vty, struct interface 
 	     rtadv_pref_strs[zif->rtadv.DefaultPreference],
 	     VTY_NEWLINE);
 
+  if (zif->rtadv.AdvLinkMTU)
+    vty_out (vty, " ipv6 nd mtu %d%s", zif->rtadv.AdvLinkMTU, VTY_NEWLINE);
+
   for (ALL_LIST_ELEMENTS_RO (zif->rtadv.AdvPrefixList, node, rprefix))
     {
       vty_out (vty, " ipv6 nd prefix %s/%d",
-	       inet_ntop (AF_INET6, &rprefix->prefix.u.prefix6, 
+	       inet_ntop (AF_INET6, &rprefix->prefix.prefix,
 			  (char *) buf, INET6_ADDRSTRLEN),
 	       rprefix->prefix.prefixlen);
       if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) || 
@@ -1572,10 +1688,14 @@ rtadv_init (void)
   install_element (INTERFACE_NODE, &ipv6_nd_ra_interval_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_ra_interval_val_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_ra_interval_msec_val_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_val_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_reachable_time_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_reachable_time_val_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd);
@@ -1584,8 +1704,10 @@ rtadv_init (void)
   install_element (INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_val_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_val_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_adv_interval_config_option_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_adv_interval_config_option_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_prefix_cmd);
@@ -1605,6 +1727,10 @@ rtadv_init (void)
   install_element (INTERFACE_NODE, &no_ipv6_nd_prefix_cmd);
   install_element (INTERFACE_NODE, &ipv6_nd_router_preference_cmd);
   install_element (INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_router_preference_val_cmd);
+  install_element (INTERFACE_NODE, &ipv6_nd_mtu_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_mtu_cmd);
+  install_element (INTERFACE_NODE, &no_ipv6_nd_mtu_val_cmd);
 }
 
 static int