diff --git a/ripngd/ChangeLog b/ripngd/ChangeLog
index 8fb577b..1375b25 100644
--- a/ripngd/ChangeLog
+++ b/ripngd/ChangeLog
@@ -1,3 +1,7 @@
+2004-10-11 Hasso Tepper <hasso at quagga.net>
+
+	* *.c: Make more strings const.
+
 2004-10-08 Hasso Tepper <hasso at quagga.net>
 
 	* *.[c|h]: Fix compiler warnings: make strings const, signed ->
diff --git a/ripngd/ripng_interface.c b/ripngd/ripng_interface.c
index eb9005c..f5467f9 100644
--- a/ripngd/ripng_interface.c
+++ b/ripngd/ripng_interface.c
@@ -52,7 +52,7 @@
 /* Static utility function. */
 static void ripng_enable_apply (struct interface *);
 static void ripng_passive_interface_apply (struct interface *);
-int ripng_enable_if_lookup (char *ifname);
+int ripng_enable_if_lookup (const char *ifname);
 int ripng_enable_network_lookup2 (struct connected *connected);
 void ripng_enable_apply_all ();
 
@@ -155,12 +155,12 @@
 }
 
 /* Check max mtu size. */
-int
+unsigned int
 ripng_check_max_mtu ()
 {
   struct listnode *node;
   struct interface *ifp;
-  int mtu;
+  unsigned int mtu;
 
   mtu = 0;
   for (node = listhead (iflist); node; nextnode (node))
@@ -636,7 +636,7 @@
 
 /* Lookup function. */
 int
-ripng_enable_if_lookup (char *ifname)
+ripng_enable_if_lookup (const char *ifname)
 {
   unsigned int i;
   char *str;
@@ -650,7 +650,7 @@
 
 /* Add interface to ripng_enable_if. */
 int
-ripng_enable_if_add (char *ifname)
+ripng_enable_if_add (const char *ifname)
 {
   int ret;
 
@@ -667,7 +667,7 @@
 
 /* Delete interface from ripng_enable_if. */
 int
-ripng_enable_if_delete (char *ifname)
+ripng_enable_if_delete (const char *ifname)
 {
   int index;
   char *str;
@@ -860,7 +860,7 @@
 
 /* Utility function for looking up passive interface settings. */
 int
-ripng_passive_interface_lookup (char *ifname)
+ripng_passive_interface_lookup (const char *ifname)
 {
   unsigned int i;
   char *str;
@@ -902,7 +902,7 @@
 
 /* Passive interface. */
 int
-ripng_passive_interface_set (struct vty *vty, char *ifname)
+ripng_passive_interface_set (struct vty *vty, const char *ifname)
 {
   if (ripng_passive_interface_lookup (ifname) >= 0)
     return CMD_WARNING;
@@ -915,7 +915,7 @@
 }
 
 int
-ripng_passive_interface_unset (struct vty *vty, char *ifname)
+ripng_passive_interface_unset (struct vty *vty, const char *ifname)
 {
   int i;
   char *str;
@@ -954,7 +954,7 @@
 ripng_network_write (struct vty *vty, int config_mode)
 {
   unsigned int i;
-  char *ifname;
+  const char *ifname;
   struct route_node *node;
   char buf[BUFSIZ];
 
diff --git a/ripngd/ripng_offset.c b/ripngd/ripng_offset.c
index ab3c460..46e23f0 100644
--- a/ripngd/ripng_offset.c
+++ b/ripngd/ripng_offset.c
@@ -51,7 +51,7 @@
 static struct list *ripng_offset_list_master;
 
 int
-strcmp_safe (char *s1, char *s2)
+strcmp_safe (const char *s1, const char *s2)
 {
   if (s1 == NULL && s2 == NULL)
     return 0;
@@ -78,7 +78,7 @@
 }
 
 struct ripng_offset_list *
-ripng_offset_list_lookup (char *ifname)
+ripng_offset_list_lookup (const char *ifname)
 {
   struct ripng_offset_list *offset;
   struct listnode *nn;
@@ -92,7 +92,7 @@
 }
 
 struct ripng_offset_list *
-ripng_offset_list_get (char *ifname)
+ripng_offset_list_get (const char *ifname)
 {
   struct ripng_offset_list *offset;
   
@@ -109,8 +109,9 @@
 }
 
 int
-ripng_offset_list_set (struct vty *vty, char *alist, char *direct_str,
-		       char *metric_str, char *ifname)
+ripng_offset_list_set (struct vty *vty, const char *alist,
+		       const char *direct_str, const char *metric_str,
+		       const char *ifname)
 {
   int direct;
   int metric;
@@ -147,8 +148,9 @@
 }
 
 int
-ripng_offset_list_unset (struct vty *vty, char *alist, char *direct_str,
-		         char *metric_str, char *ifname)
+ripng_offset_list_unset (struct vty *vty, const char *alist,
+			 const char *direct_str, const char *metric_str,
+			 const char *ifname)
 {
   int direct;
   int metric;
diff --git a/ripngd/ripng_routemap.c b/ripngd/ripng_routemap.c
index a318301..1c17e6c 100644
--- a/ripngd/ripng_routemap.c
+++ b/ripngd/ripng_routemap.c
@@ -45,7 +45,7 @@
 
 int
 ripng_route_match_add (struct vty *vty, struct route_map_index *index,
-		       const char *command, char *arg)
+		       const char *command, const char *arg)
 {
   int ret;
 
@@ -69,7 +69,7 @@
 
 int
 ripng_route_match_delete (struct vty *vty, struct route_map_index *index,
-			  const char *command, char *arg)
+			  const char *command, const char *arg)
 {
   int ret;
 
@@ -93,7 +93,7 @@
 
 int
 ripng_route_set_add (struct vty *vty, struct route_map_index *index,
-		     const char *command, char *arg)
+		     const char *command, const char *arg)
 {
   int ret;
 
@@ -117,7 +117,7 @@
 
 int
 ripng_route_set_delete (struct vty *vty, struct route_map_index *index,
-			const char *command, char *arg)
+			const char *command, const char *arg)
 {
   int ret;
 
@@ -163,7 +163,7 @@
 
 /* Route map `match metric' match statement. `arg' is METRIC value */
 void *
-route_match_metric_compile (char *arg)
+route_match_metric_compile (const char *arg)
 {
   u_int32_t *metric;
 
@@ -223,7 +223,7 @@
 
 /* Route map `match interface' match statement. `arg' is IFNAME value */
 void *
-route_match_interface_compile (char *arg)
+route_match_interface_compile (const char *arg)
 {
   return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
 }
@@ -267,7 +267,7 @@
 
 /* Route map `match tag' match statement. `arg' is TAG value */
 void *
-route_match_tag_compile (char *arg)
+route_match_tag_compile (const char *arg)
 {
   u_short *tag;
 
@@ -327,10 +327,10 @@
 
 /* set metric compilation. */
 void *
-route_set_metric_compile (char *arg)
+route_set_metric_compile (const char *arg)
 {
   int len;
-  char *pnt;
+  const char *pnt;
   int type;
   long metric;
   char *endptr = NULL;
@@ -419,7 +419,7 @@
 /* Route map `ipv6 nexthop local' compile function.  Given string is converted
    to struct in6_addr structure. */
 void *
-route_set_ipv6_nexthop_local_compile (char *arg)
+route_set_ipv6_nexthop_local_compile (const char *arg)
 {
   int ret;
   struct in6_addr *address;
@@ -479,7 +479,7 @@
 /* Route map `tag' compile function.  Given string is converted
    to u_short. */
 void *
-route_set_tag_compile (char *arg)
+route_set_tag_compile (const char *arg)
 {
   u_short *tag;
 
diff --git a/ripngd/ripng_zebra.c b/ripngd/ripng_zebra.c
index 7aaa353..6e58259 100644
--- a/ripngd/ripng_zebra.c
+++ b/ripngd/ripng_zebra.c
@@ -184,7 +184,7 @@
 }
 
 void
-ripng_redistribute_routemap_set (int type, char *name)
+ripng_redistribute_routemap_set (int type, const char *name)
 {
   if (ripng->route_map[type].name)
     free (ripng->route_map[type].name);
diff --git a/ripngd/ripngd.c b/ripngd/ripngd.c
index a7254bc..edf959f 100644
--- a/ripngd/ripngd.c
+++ b/ripngd/ripngd.c
@@ -2992,7 +2992,7 @@
 }
 
 void
-ripng_routemap_update (char *unused)
+ripng_routemap_update (const char *unused)
 {
   struct interface *ifp;
   struct listnode *node;