lib: Make distribute.c accepts both v4 and v6.

distribute.c doesn't allow to manage both v4 and v6 distribute lists.  This
patch fix this problem by having 4 DISTRIBUTE* values in the enumeration instead
of two. The code in all daemons using distribute.c is adapted.

4 files changed, 355 insertions, 66 deletions

diff --git a/lib/distribute.c b/lib/distribute.c
index e94b4d446c..498410c22d 100644
--- a/lib/distribute.c
+++ b/lib/distribute.c
@@ -266,9 +266,9 @@ DEFUN (distribute_list_all,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
       vty_out (vty, "distribute list direction must be [in|out]%s",
@@ -282,8 +282,36 @@ DEFUN (distribute_list_all,
   return CMD_SUCCESS;
 }
 
-ALIAS (distribute_list_all,
+DEFUN (ipv6_distribute_list_all,
        ipv6_distribute_list_all_cmd,
+       "ipv6 distribute-list WORD (in|out)",
+       "Filter networks in routing updates\n"
+       "Access-list name\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n")
+{
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  /* Get interface name corresponding distribute list. */
+  distribute_list_set (NULL, type, argv[0]);
+
+  return CMD_SUCCESS;
+}
+
+ALIAS (ipv6_distribute_list_all,
+       ipv6_as_v4_distribute_list_all_cmd,
        "distribute-list WORD (in|out)",
        "Filter networks in routing updates\n"
        "Access-list name\n"
@@ -304,9 +332,9 @@ DEFUN (no_distribute_list_all,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
       vty_out (vty, "distribute list direction must be [in|out]%s",
@@ -323,8 +351,41 @@ DEFUN (no_distribute_list_all,
   return CMD_SUCCESS;
 }
 
-ALIAS (no_distribute_list_all,
+DEFUN (no_ipv6_distribute_list_all,
        no_ipv6_distribute_list_all_cmd,
+       "no ipv6 distribute-list WORD (in|out)",
+       NO_STR
+       "Filter networks in routing updates\n"
+       "Access-list name\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n")
+{
+  int ret;
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  ret = distribute_list_unset (NULL, type, argv[0]);
+  if (! ret)
+  {
+    vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+  return CMD_SUCCESS;
+}
+
+ALIAS (no_ipv6_distribute_list_all,
+       no_ipv6_as_v4_distribute_list_all_cmd,
        "no distribute-list WORD (in|out)",
        NO_STR
        "Filter networks in routing updates\n"
@@ -345,9 +406,9 @@ DEFUN (distribute_list,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
       vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
@@ -360,8 +421,36 @@ DEFUN (distribute_list,
   return CMD_SUCCESS;
 }
 
-ALIAS (distribute_list,
+DEFUN (ipv6_distribute_list,
        ipv6_distribute_list_cmd,
+       "ipv6 distribute-list WORD (in|out) WORD",
+       "Filter networks in routing updates\n"
+       "Access-list name\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n"
+       "Interface name\n")
+{
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  /* Get interface name corresponding distribute list. */
+  distribute_list_set (argv[2], type, argv[0]);
+
+  return CMD_SUCCESS;
+}
+
+ALIAS (ipv6_distribute_list,
+       ipv6_as_v4_distribute_list_cmd,
        "distribute-list WORD (in|out) WORD",
        "Filter networks in routing updates\n"
        "Access-list name\n"
@@ -383,9 +472,9 @@ DEFUN (no_distribute_list, no_distribute_list_cmd,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
       vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
@@ -401,7 +490,41 @@ DEFUN (no_distribute_list, no_distribute_list_cmd,
   return CMD_SUCCESS;
 }
 
-ALIAS (no_distribute_list, no_ipv6_distribute_list_cmd,
+DEFUN (no_ipv6_distribute_list,
+       no_ipv6_distribute_list_cmd,
+       "no ipv6 distribute-list WORD (in|out) WORD",
+       NO_STR
+       "Filter networks in routing updates\n"
+       "Access-list name\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n"
+       "Interface name\n")
+{
+  int ret;
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  ret = distribute_list_unset (argv[2], type, argv[0]);
+  if (! ret)
+  {
+    vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+  return CMD_SUCCESS;
+}
+
+ALIAS (no_ipv6_distribute_list,
+       no_ipv6_as_v4_distribute_list_cmd,
        "no distribute-list WORD (in|out) WORD",
        NO_STR
        "Filter networks in routing updates\n"
@@ -423,12 +546,12 @@ DEFUN (distribute_list_prefix_all,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
-      vty_out (vty, "distribute list direction must be [in|out]%s", 
+      vty_out (vty, "distribute list direction must be [in|out]%s",
 	       VTY_NEWLINE);
       return CMD_WARNING;
     }
@@ -439,8 +562,37 @@ DEFUN (distribute_list_prefix_all,
   return CMD_SUCCESS;
 }
 
-ALIAS (distribute_list_prefix_all,
+DEFUN (ipv6_distribute_list_prefix_all,
        ipv6_distribute_list_prefix_all_cmd,
+       "ipv6 distribute-list prefix WORD (in|out)",
+       "Filter networks in routing updates\n"
+       "Filter prefixes in routing updates\n"
+       "Name of an IP prefix-list\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n")
+{
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  /* Get interface name corresponding distribute list. */
+  distribute_list_prefix_set (NULL, type, argv[0]);
+
+  return CMD_SUCCESS;
+}
+
+ALIAS (ipv6_distribute_list_prefix_all,
+       ipv6_as_v4_distribute_list_prefix_all_cmd,
        "distribute-list prefix WORD (in|out)",
        "Filter networks in routing updates\n"
        "Filter prefixes in routing updates\n"
@@ -463,12 +615,12 @@ DEFUN (no_distribute_list_prefix_all,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
-      vty_out (vty, "distribute list direction must be [in|out]%s", 
+      vty_out (vty, "distribute list direction must be [in|out]%s",
 	       VTY_NEWLINE);
       return CMD_WARNING;
     }
@@ -482,8 +634,42 @@ DEFUN (no_distribute_list_prefix_all,
   return CMD_SUCCESS;
 }
 
-ALIAS (no_distribute_list_prefix_all,
+DEFUN (no_ipv6_distribute_list_prefix_all,
        no_ipv6_distribute_list_prefix_all_cmd,
+       "no ipv6 distribute-list prefix WORD (in|out)",
+       NO_STR
+       "Filter networks in routing updates\n"
+       "Filter prefixes in routing updates\n"
+       "Name of an IP prefix-list\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n")
+{
+  int ret;
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  ret = distribute_list_prefix_unset (NULL, type, argv[0]);
+  if (! ret)
+  {
+    vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+  return CMD_SUCCESS;
+}
+
+ALIAS (no_ipv6_distribute_list_prefix_all,
+       no_ipv6_as_v4_distribute_list_prefix_all_cmd,
        "no distribute-list prefix WORD (in|out)",
        NO_STR
        "Filter networks in routing updates\n"
@@ -505,12 +691,12 @@ DEFUN (distribute_list_prefix, distribute_list_prefix_cmd,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
-      vty_out (vty, "distribute list direction must be [in|out]%s", 
+      vty_out (vty, "distribute list direction must be [in|out]%s",
 	       VTY_NEWLINE);
       return CMD_WARNING;
     }
@@ -521,7 +707,38 @@ DEFUN (distribute_list_prefix, distribute_list_prefix_cmd,
   return CMD_SUCCESS;
 }
 
-ALIAS (distribute_list_prefix, ipv6_distribute_list_prefix_cmd,
+DEFUN (ipv6_distribute_list_prefix,
+       ipv6_distribute_list_prefix_cmd,
+       "ipv6 distribute-list prefix WORD (in|out) WORD",
+       "Filter networks in routing updates\n"
+       "Filter prefixes in routing updates\n"
+       "Name of an IP prefix-list\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n"
+       "Interface name\n")
+{
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  /* Get interface name corresponding distribute list. */
+  distribute_list_prefix_set (argv[2], type, argv[0]);
+
+  return CMD_SUCCESS;
+}
+
+ALIAS (ipv6_distribute_list_prefix,
+       ipv6_as_v4_distribute_list_prefix_cmd,
        "distribute-list prefix WORD (in|out) WORD",
        "Filter networks in routing updates\n"
        "Filter prefixes in routing updates\n"
@@ -545,12 +762,12 @@ DEFUN (no_distribute_list_prefix, no_distribute_list_prefix_cmd,
 
   /* Check of distribute list type. */
   if (strncmp (argv[1], "i", 1) == 0)
-    type = DISTRIBUTE_IN;
+    type = DISTRIBUTE_V4_IN;
   else if (strncmp (argv[1], "o", 1) == 0)
-    type = DISTRIBUTE_OUT;
+    type = DISTRIBUTE_V4_OUT;
   else
     {
-      vty_out (vty, "distribute list direction must be [in|out]%s", 
+      vty_out (vty, "distribute list direction must be [in|out]%s",
 	       VTY_NEWLINE);
       return CMD_WARNING;
     }
@@ -564,7 +781,43 @@ DEFUN (no_distribute_list_prefix, no_distribute_list_prefix_cmd,
   return CMD_SUCCESS;
 }
 
-ALIAS (no_distribute_list_prefix, no_ipv6_distribute_list_prefix_cmd,
+DEFUN (no_ipv6_distribute_list_prefix,
+       no_ipv6_distribute_list_prefix_cmd,
+       "no ipv6 distribute-list prefix WORD (in|out) WORD",
+       NO_STR
+       "Filter networks in routing updates\n"
+       "Filter prefixes in routing updates\n"
+       "Name of an IP prefix-list\n"
+       "Filter incoming routing updates\n"
+       "Filter outgoing routing updates\n"
+       "Interface name\n")
+{
+  int ret;
+  enum distribute_type type;
+
+  /* Check of distribute list type. */
+  if (strncmp (argv[1], "i", 1) == 0)
+    type = DISTRIBUTE_V6_IN;
+  else if (strncmp (argv[1], "o", 1) == 0)
+    type = DISTRIBUTE_V6_OUT;
+  else
+  {
+    vty_out (vty, "distribute list direction must be [in|out]%s",
+             VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+
+  ret = distribute_list_prefix_unset (argv[2], type, argv[0]);
+  if (! ret)
+  {
+    vty_out (vty, "distribute list doesn't exist%s", VTY_NEWLINE);
+    return CMD_WARNING;
+  }
+  return CMD_SUCCESS;
+}
+
+ALIAS (no_ipv6_distribute_list_prefix,
+       no_ipv6_as_v4_distribute_list_prefix_cmd,
        "no distribute-list prefix WORD (in|out) WORD",
        NO_STR
        "Filter networks in routing updates\n"
@@ -603,9 +856,13 @@ config_show_distribute (struct vty *vty)
   if (dist)
     {
       has_print = distribute_print(vty, dist->list,   0,
-                                   DISTRIBUTE_OUT, has_print);
+                                   DISTRIBUTE_V4_OUT, has_print);
       has_print = distribute_print(vty, dist->prefix, 1,
-                                   DISTRIBUTE_OUT, has_print);
+                                   DISTRIBUTE_V4_OUT, has_print);
+      has_print = distribute_print(vty, dist->list,   0,
+                                   DISTRIBUTE_V6_OUT, has_print);
+      has_print = distribute_print(vty, dist->prefix, 1,
+                                   DISTRIBUTE_V6_OUT, has_print);
     }
   if (has_print)
     vty_out (vty, "%s", VTY_NEWLINE);
@@ -621,9 +878,13 @@ config_show_distribute (struct vty *vty)
             vty_out (vty, "    %s filtered by", dist->ifname);
             has_print = 0;
             has_print = distribute_print(vty, dist->list,   0,
-                                         DISTRIBUTE_OUT, has_print);
+                                         DISTRIBUTE_V4_OUT, has_print);
             has_print = distribute_print(vty, dist->prefix, 1,
-                                         DISTRIBUTE_OUT, has_print);
+                                         DISTRIBUTE_V4_OUT, has_print);
+            has_print = distribute_print(vty, dist->list,   0,
+                                         DISTRIBUTE_V6_OUT, has_print);
+            has_print = distribute_print(vty, dist->prefix, 1,
+                                         DISTRIBUTE_V6_OUT, has_print);
             if (has_print)
               vty_out (vty, "%s", VTY_NEWLINE);
             else
@@ -639,9 +900,14 @@ config_show_distribute (struct vty *vty)
   if (dist)
     {
       has_print = distribute_print(vty, dist->list,   0,
-                                   DISTRIBUTE_IN, has_print);
+                                   DISTRIBUTE_V4_IN, has_print);
+      has_print = distribute_print(vty, dist->prefix, 1,
+                                   DISTRIBUTE_V4_IN, has_print);
+      has_print = distribute_print(vty, dist->list,   0,
+                                   DISTRIBUTE_V6_IN, has_print);
       has_print = distribute_print(vty, dist->prefix, 1,
-                                   DISTRIBUTE_IN, has_print);    }
+                                   DISTRIBUTE_V6_IN, has_print);
+    }
   if (has_print)
     vty_out (vty, "%s", VTY_NEWLINE);
   else
@@ -656,9 +922,13 @@ config_show_distribute (struct vty *vty)
             vty_out (vty, "    %s filtered by", dist->ifname);
             has_print = 0;
             has_print = distribute_print(vty, dist->list,   0,
-                                         DISTRIBUTE_IN, has_print);
+                                         DISTRIBUTE_V4_IN, has_print);
+            has_print = distribute_print(vty, dist->prefix, 1,
+                                         DISTRIBUTE_V4_IN, has_print);
+            has_print = distribute_print(vty, dist->list,   0,
+                                         DISTRIBUTE_V6_IN, has_print);
             has_print = distribute_print(vty, dist->prefix, 1,
-                                         DISTRIBUTE_IN, has_print);
+                                         DISTRIBUTE_V6_IN, has_print);
             if (has_print)
               vty_out (vty, "%s", VTY_NEWLINE);
             else
@@ -674,7 +944,7 @@ config_write_distribute (struct vty *vty)
 {
   unsigned int i;
   int j;
-  int output;
+  int output, v6;
   struct hash_backet *mp;
   int write = 0;
 
@@ -687,8 +957,10 @@ config_write_distribute (struct vty *vty)
 
 	for (j = 0; j < DISTRIBUTE_MAX; j++)
 	  if (dist->list[j]) {
-	    output = j == DISTRIBUTE_OUT;
-	    vty_out (vty, " distribute-list %s %s %s%s",
+	    output = j == DISTRIBUTE_V4_OUT || j == DISTRIBUTE_V6_OUT;
+            v6 = j == DISTRIBUTE_V6_IN || j == DISTRIBUTE_V6_OUT;
+	    vty_out (vty, " %sdistribute-list %s %s %s%s",
+                     v6 ? "ipv6 " : "",
 		     dist->list[j],
 		     output ? "out" : "in",
 		     dist->ifname ? dist->ifname : "",
@@ -698,8 +970,10 @@ config_write_distribute (struct vty *vty)
 
 	for (j = 0; j < DISTRIBUTE_MAX; j++)
 	  if (dist->prefix[j]) {
-	    output = j == DISTRIBUTE_OUT;
-	    vty_out (vty, " distribute-list prefix %s %s %s%s",
+	    output = j == DISTRIBUTE_V4_OUT || j == DISTRIBUTE_V6_OUT;
+            v6 = j == DISTRIBUTE_V6_IN || j == DISTRIBUTE_V6_OUT;
+	    vty_out (vty, " %sdistribute-list prefix %s %s %s%s",
+                     v6 ? "ipv6 " : "",
 		     dist->prefix[j],
 		     output ? "out" : "in",
 		     dist->ifname ? dist->ifname : "",
@@ -723,8 +997,8 @@ distribute_list_init (int node)
 {
   disthash = hash_create (distribute_hash_make,
                           (int (*) (const void *, const void *)) distribute_cmp);
-
-  if(node==RIP_NODE) {
+  /* install v4 */
+  if (node == RIP_NODE) {
     install_element (node, &distribute_list_all_cmd);
     install_element (node, &no_distribute_list_all_cmd);
     install_element (node, &distribute_list_cmd);
@@ -733,9 +1007,10 @@ distribute_list_init (int node)
     install_element (node, &no_distribute_list_prefix_all_cmd);
     install_element (node, &distribute_list_prefix_cmd);
     install_element (node, &no_distribute_list_prefix_cmd);
-  } else if (node == RIPNG_NODE) {
-    /* WARNING: two identical commands installed do a crash, so be worry with
-     * aliases */
+  }
+
+  /* install v6 */
+  if (node == RIPNG_NODE) {
     install_element (node, &ipv6_distribute_list_all_cmd);
     install_element (node, &no_ipv6_distribute_list_all_cmd);
     install_element (node, &ipv6_distribute_list_cmd);
@@ -745,4 +1020,16 @@ distribute_list_init (int node)
     install_element (node, &ipv6_distribute_list_prefix_cmd);
     install_element (node, &no_ipv6_distribute_list_prefix_cmd);
   }
+
+  /* install v4 syntax command for v6 only protocols. */
+  if (node == RIPNG_NODE) {
+    install_element (node, &ipv6_as_v4_distribute_list_all_cmd);
+    install_element (node, &no_ipv6_as_v4_distribute_list_all_cmd);
+    install_element (node, &ipv6_as_v4_distribute_list_cmd);
+    install_element (node, &no_ipv6_as_v4_distribute_list_cmd);
+    install_element (node, &ipv6_as_v4_distribute_list_prefix_all_cmd);
+    install_element (node, &no_ipv6_as_v4_distribute_list_prefix_all_cmd);
+    install_element (node, &ipv6_as_v4_distribute_list_prefix_cmd);
+    install_element (node, &no_ipv6_as_v4_distribute_list_prefix_cmd);
+  }
 }
diff --git a/lib/distribute.h b/lib/distribute.h
index a2ffffd5fc..e9625a3548 100644
--- a/lib/distribute.h
+++ b/lib/distribute.h
@@ -29,8 +29,10 @@
 /* Disctirubte list types. */
 enum distribute_type
 {
-  DISTRIBUTE_IN,
-  DISTRIBUTE_OUT,
+  DISTRIBUTE_V4_IN,
+  DISTRIBUTE_V6_IN,
+  DISTRIBUTE_V4_OUT,
+  DISTRIBUTE_V6_OUT,
   DISTRIBUTE_MAX
 };
 
diff --git a/ripd/ripd.c b/ripd/ripd.c
index ef0be41f09..22ba2fe998 100644
--- a/ripd/ripd.c
+++ b/ripd/ripd.c
@@ -322,7 +322,7 @@ rip_filter (int rip_distribute, struct prefix_ipv4 *p, struct rip_interface *ri)
   struct access_list *alist;
   struct prefix_list *plist;
   int distribute = rip_distribute == RIP_FILTER_OUT ?
-      DISTRIBUTE_OUT : DISTRIBUTE_IN;
+      DISTRIBUTE_V4_OUT : DISTRIBUTE_V4_IN;
   const char *inout = rip_distribute == RIP_FILTER_OUT ? "out" : "in";
 
   /* Input distribute-list filtering. */
@@ -3804,9 +3804,9 @@ rip_distribute_update (struct distribute *dist)
 
   ri = ifp->info;
 
-  if (dist->list[DISTRIBUTE_IN])
+  if (dist->list[DISTRIBUTE_V4_IN])
     {
-      alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_IN]);
+      alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_IN]);
       if (alist)
 	ri->list[RIP_FILTER_IN] = alist;
       else
@@ -3815,9 +3815,9 @@ rip_distribute_update (struct distribute *dist)
   else
     ri->list[RIP_FILTER_IN] = NULL;
 
-  if (dist->list[DISTRIBUTE_OUT])
+  if (dist->list[DISTRIBUTE_V4_OUT])
     {
-      alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_OUT]);
+      alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_OUT]);
       if (alist)
 	ri->list[RIP_FILTER_OUT] = alist;
       else
@@ -3826,9 +3826,9 @@ rip_distribute_update (struct distribute *dist)
   else
     ri->list[RIP_FILTER_OUT] = NULL;
 
-  if (dist->prefix[DISTRIBUTE_IN])
+  if (dist->prefix[DISTRIBUTE_V4_IN])
     {
-      plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_IN]);
+      plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_IN]);
       if (plist)
 	ri->prefix[RIP_FILTER_IN] = plist;
       else
@@ -3837,9 +3837,9 @@ rip_distribute_update (struct distribute *dist)
   else
     ri->prefix[RIP_FILTER_IN] = NULL;
 
-  if (dist->prefix[DISTRIBUTE_OUT])
+  if (dist->prefix[DISTRIBUTE_V4_OUT])
     {
-      plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_OUT]);
+      plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_OUT]);
       if (plist)
 	ri->prefix[RIP_FILTER_OUT] = plist;
       else
diff --git a/ripngd/ripngd.c b/ripngd/ripngd.c
index 3d76dc5254..7d2c66b0b2 100644
--- a/ripngd/ripngd.c
+++ b/ripngd/ripngd.c
@@ -617,7 +617,7 @@ ripng_filter (int ripng_distribute, struct prefix_ipv6 *p,
   struct access_list *alist;
   struct prefix_list *plist;
   int distribute = ripng_distribute == RIPNG_FILTER_OUT ?
-      DISTRIBUTE_OUT : DISTRIBUTE_IN;
+      DISTRIBUTE_V6_OUT : DISTRIBUTE_V6_IN;
   const char *inout = ripng_distribute == RIPNG_FILTER_OUT ? "out" : "in";
 
   /* Input distribute-list filtering. */
@@ -2759,9 +2759,9 @@ ripng_distribute_update (struct distribute *dist)
 
   ri = ifp->info;
 
-  if (dist->list[DISTRIBUTE_IN])
+  if (dist->list[DISTRIBUTE_V6_IN])
     {
-      alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]);
+      alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_V6_IN]);
       if (alist)
 	ri->list[RIPNG_FILTER_IN] = alist;
       else
@@ -2770,9 +2770,9 @@ ripng_distribute_update (struct distribute *dist)
   else
     ri->list[RIPNG_FILTER_IN] = NULL;
 
-  if (dist->list[DISTRIBUTE_OUT])
+  if (dist->list[DISTRIBUTE_V6_OUT])
     {
-      alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]);
+      alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_V6_OUT]);
       if (alist)
 	ri->list[RIPNG_FILTER_OUT] = alist;
       else
@@ -2781,9 +2781,9 @@ ripng_distribute_update (struct distribute *dist)
   else
     ri->list[RIPNG_FILTER_OUT] = NULL;
 
-  if (dist->prefix[DISTRIBUTE_IN])
+  if (dist->prefix[DISTRIBUTE_V6_IN])
     {
-      plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]);
+      plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_V6_IN]);
       if (plist)
 	ri->prefix[RIPNG_FILTER_IN] = plist;
       else
@@ -2792,9 +2792,9 @@ ripng_distribute_update (struct distribute *dist)
   else
     ri->prefix[RIPNG_FILTER_IN] = NULL;
 
-  if (dist->prefix[DISTRIBUTE_OUT])
+  if (dist->prefix[DISTRIBUTE_V6_OUT])
     {
-      plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]);
+      plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_V6_OUT]);
       if (plist)
 	ri->prefix[RIPNG_FILTER_OUT] = plist;
       else