diff --git a/filter/filter.c b/filter/filter.c
index 7893d9ae..6f85c064 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -247,7 +247,7 @@ val_print(struct f_val v)
   case T_SET: tree_print( v.val.t ); PRINTF( "\n" ); break;
   case T_ENUM: PRINTF( "(enum %x)%d", v.type, v.val.i ); break;
   case T_PATH: as_path_format(v.val.ad, buf2, 1020); PRINTF( "(path %s)", buf2 ); break;
-  case T_CLIST: int_set_format(v.val.ad, buf2, 1020); PRINTF( "(clist %s)", buf2 ); break;
+  case T_CLIST: int_set_format(v.val.ad, 1, buf2, 1020); PRINTF( "(clist %s)", buf2 ); break;
   case T_PATH_MASK: pm_format(v.val.path_mask, buf2, 1020); PRINTF( "(pathmask %s)", buf2 ); break;
   default: PRINTF( "[unknown type %x]", v.type );
 #undef PRINTF
diff --git a/nest/a-set.c b/nest/a-set.c
index 69c090b7..505c0e51 100644
--- a/nest/a-set.c
+++ b/nest/a-set.c
@@ -14,7 +14,7 @@
 #include "lib/string.h"
 
 void
-int_set_format(struct adata *set, byte *buf, unsigned int size)
+int_set_format(struct adata *set, int way, byte *buf, unsigned int size)
 {
   u32 *z = (u32 *) set->data;
   int l = set->length / 4;
@@ -30,7 +30,14 @@ int_set_format(struct adata *set, byte *buf, unsigned int size)
 	  strcpy(buf, "...");
 	  return;
 	}
-      buf += bsprintf(buf, "(%d,%d)", *z >> 16, *z & 0xffff);
+
+      if (way)
+	buf += bsprintf(buf, "(%d,%d)", *z >> 16, *z & 0xffff);
+      else
+	buf += bsprintf(buf, "%d.%d.%d.%d",
+			(*z >> 24) & 0xff, (*z >> 16) & 0xff,
+			(*z >> 8) & 0xff, *z & 0xff);
+
       z++;
       sp = 0;
     }
diff --git a/nest/attrs.h b/nest/attrs.h
index fee2c2c8..6f0bc1f5 100644
--- a/nest/attrs.h
+++ b/nest/attrs.h
@@ -43,7 +43,7 @@ int as_path_match(struct adata *path, struct f_path_mask *mask);
 
 /* a-set.c */
 
-void int_set_format(struct adata *set, byte *buf, unsigned int size);
+void int_set_format(struct adata *set, int way, byte *buf, unsigned int size);
 struct adata *int_set_add(struct linpool *pool, struct adata *list, u32 val);
 int int_set_contains(struct adata *list, u32 val);
 struct adata *int_set_del(struct linpool *pool, struct adata *list, u32 val);
diff --git a/nest/proto-hooks.c b/nest/proto-hooks.c
index 4035fdd7..82df5cb7 100644
--- a/nest/proto-hooks.c
+++ b/nest/proto-hooks.c
@@ -146,7 +146,7 @@ void get_route_info(rte *e, byte *buf, ea_list *attrs)
  * or doing the whole conversion (used in case the value requires extra
  * care; return %GA_FULL).
  */
-int get_attr(eattr *a, byte *buf)
+int get_attr(eattr *a, byte *buf, int buflen)
 { DUMMY; }
 
 /**
diff --git a/nest/protocol.h b/nest/protocol.h
index 64ea4661..d681ae68 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -48,7 +48,7 @@ struct protocol {
   int (*shutdown)(struct proto *);		/* Stop the instance */
   void (*get_status)(struct proto *, byte *buf); /* Get instance status (for `show protocols' command) */
   void (*get_route_info)(struct rte *, byte *buf, struct ea_list *attrs); /* Get route information (for `show route' command) */
-  int (*get_attr)(struct eattr *, byte *buf);	/* ASCIIfy dynamic attribute (returns GA_*) */
+  int (*get_attr)(struct eattr *, byte *buf, int buflen);	/* ASCIIfy dynamic attribute (returns GA_*) */
 };
 
 void protos_build(void);
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index cbece881..e79cba1f 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -386,7 +386,7 @@ ea_format(eattr *e, byte *buf)
     {
       buf += bsprintf(buf, "%s.", p->name);
       if (p->get_attr)
-	status = p->get_attr(e, buf);
+	status = p->get_attr(e, buf, end - buf);
       buf += strlen(buf);
     }
   else if (EA_PROTO(e->id))
@@ -429,7 +429,7 @@ ea_format(eattr *e, byte *buf)
 	  as_path_format(ad, buf, end - buf);
 	  break;
 	case EAF_TYPE_INT_SET:
-	  int_set_format(ad, buf, end - buf);
+	  int_set_format(ad, 1, buf, end - buf);
 	  break;
 	case EAF_TYPE_UNDEF:
 	default:
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 811d52eb..c13f9056 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -35,7 +35,7 @@ struct attr_desc {
   int type;
   int allow_in_ebgp;
   int (*validate)(struct bgp_proto *p, byte *attr, int len);
-  void (*format)(eattr *ea, byte *buf);
+  void (*format)(eattr *ea, byte *buf, int buflen);
 };
 
 static int
@@ -47,7 +47,7 @@ bgp_check_origin(struct bgp_proto *p UNUSED, byte *a UNUSED, int len)
 }
 
 static void
-bgp_format_origin(eattr *a, byte *buf)
+bgp_format_origin(eattr *a, byte *buf, int buflen)
 {
   static char *bgp_origin_names[] = { "IGP", "EGP", "Incomplete" };
 
@@ -104,7 +104,7 @@ bgp_check_next_hop(struct bgp_proto *p UNUSED, byte *a, int len)
 }
 
 static int
-bgp_check_aggregator(struct bgp_proto *p, UNUSED byte *a, int len)
+bgp_check_aggregator(struct bgp_proto *p, byte *a UNUSED, int len)
 {
   int exp_len = p->as4_session ? 8 : 6;
   
@@ -112,11 +112,17 @@ bgp_check_aggregator(struct bgp_proto *p, UNUSED byte *a, int len)
 }
 
 static int
-bgp_check_cluster_list(struct bgp_proto *p UNUSED, UNUSED byte *a, int len)
+bgp_check_cluster_list(struct bgp_proto *p UNUSED, byte *a UNUSED, int len)
 {
   return ((len % 4) == 0) ? 0 : 5;
 }
 
+static void
+bgp_format_cluster_list(eattr *a, byte *buf, int buflen UNUSED)
+{
+  int_set_format(a->u.ptr, 0, buf, buflen);
+}
+
 static int
 bgp_check_reach_nlri(struct bgp_proto *p UNUSED, byte *a UNUSED, int len UNUSED)
 {
@@ -156,10 +162,10 @@ static struct attr_desc bgp_attr_table[] = {
     bgp_check_aggregator, NULL },
   { "community", -1, BAF_OPTIONAL | BAF_TRANSITIVE, EAF_TYPE_INT_SET, 1,	/* BA_COMMUNITY */
     NULL, NULL },
-  { "originator_id", 4, BAF_OPTIONAL, EAF_TYPE_INT, 0,				/* BA_ORIGINATOR_ID */
+  { "originator_id", 4, BAF_OPTIONAL, EAF_TYPE_ROUTER_ID, 0,			/* BA_ORIGINATOR_ID */
     NULL, NULL },
   { "cluster_list", -1, BAF_OPTIONAL, EAF_TYPE_INT_SET, 0,			/* BA_CLUSTER_LIST */
-    bgp_check_cluster_list, NULL }, 
+    bgp_check_cluster_list, bgp_format_cluster_list }, 
   { NULL, },									/* BA_DPA */
   { NULL, },									/* BA_ADVERTISER */
   { NULL, },									/* BA_RCID_PATH */
@@ -1306,7 +1312,7 @@ err:
 }
 
 int
-bgp_get_attr(eattr *a, byte *buf)
+bgp_get_attr(eattr *a, byte *buf, int buflen)
 {
   unsigned int i = EA_ID(a->id);
   struct attr_desc *d;
@@ -1319,7 +1325,7 @@ bgp_get_attr(eattr *a, byte *buf)
 	{
 	  *buf++ = ':';
 	  *buf++ = ' ';
-	  d->format(a, buf);
+	  d->format(a, buf, buflen);
 	  return GA_FULL;
 	}
       return GA_NAME;
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index ea64584d..aaa2c4ac 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -132,7 +132,7 @@ void bgp_close_conn(struct bgp_conn *c);
 void bgp_attach_attr(struct ea_list **to, struct linpool *pool, unsigned attr, uintptr_t val);
 byte *bgp_attach_attr_wa(struct ea_list **to, struct linpool *pool, unsigned attr, unsigned len);
 struct rta *bgp_decode_attrs(struct bgp_conn *conn, byte *a, unsigned int len, struct linpool *pool, int mandatory);
-int bgp_get_attr(struct eattr *e, byte *buf);
+int bgp_get_attr(struct eattr *e, byte *buf, int buflen);
 int bgp_rte_better(struct rte *, struct rte *);
 void bgp_rt_notify(struct proto *, struct network *, struct rte *, struct rte *, struct ea_list *);
 int bgp_import_control(struct proto *, struct rte **, struct ea_list **, struct linpool *);
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index cd510bc8..1eae3762 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -529,7 +529,7 @@ ospf_get_route_info(rte * rte, byte * buf, ea_list * attrs UNUSED)
 }
 
 static int
-ospf_get_attr(eattr * a, byte * buf)
+ospf_get_attr(eattr * a, byte * buf, int buflen UNUSED)
 {
   switch (a->id)
   {
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 6c7bd369..b5a4cc36 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -972,7 +972,7 @@ rip_init_config(struct rip_proto_config *c)
 }
 
 static int
-rip_get_attr(eattr *a, byte *buf)
+rip_get_attr(eattr *a, byte *buf, int buflen UNUSED)
 {
   switch (a->id) {
   case EA_RIP_METRIC: buf += bsprintf( buf, "metric: %d", a->u.data ); return GA_FULL;