diff --git a/filter/data.h b/filter/data.h
index 0b1e8e57..9ffa1b61 100644
--- a/filter/data.h
+++ b/filter/data.h
@@ -16,20 +16,7 @@
 /* Filter value; size of this affects filter memory consumption */
 struct f_val {
   btype type;	/* T_*  */
-  union {
-    union bval bval;
-    BVAL_ITEMS;
-
-    u64 ec;
-    lcomm lc;
-    ip_addr ip;
-    const net_addr *net;
-    const char *s;
-    const struct f_tree *t;
-    const struct f_trie *ti;
-    const struct f_path_mask *path_mask;
-    struct f_path_mask_item pmi;
-  } val;
+  union bval_long val;
 };
 
 #define fputip(a)   ({ ip_addr *ax = falloc(sizeof(*ax)); *ax = (a); ax; })
diff --git a/lib/attrs.h b/lib/attrs.h
index e0595846..97a9630f 100644
--- a/lib/attrs.h
+++ b/lib/attrs.h
@@ -11,7 +11,25 @@
 
 #include <stdint.h>
 #include "lib/unaligned.h"
-#include "lib/route.h"
+
+typedef struct adata {
+  uint length;				/* Length of data */
+  byte data[0];
+} adata;
+
+extern const adata null_adata;		/* adata of length 0 */
+
+static inline struct adata *
+lp_alloc_adata(struct linpool *pool, uint len)
+{
+  struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len);
+  ad->length = len;
+  return ad;
+}
+
+static inline int adata_same(const struct adata *a, const struct adata *b)
+{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); }
+
 
 
 /* a-path.c */
diff --git a/lib/route.h b/lib/route.h
index 47355abc..8e60f749 100644
--- a/lib/route.h
+++ b/lib/route.h
@@ -10,6 +10,8 @@
 #ifndef _BIRD_LIB_ROUTE_H_
 #define _BIRD_LIB_ROUTE_H_
 
+#include "lib/type.h"
+
 struct network;
 struct proto;
 struct cli;
@@ -163,25 +165,6 @@ const char *ea_custom_name(uint ea);
 #define EA_BIT(n) ((n) << 24)		/* Used in bitfield accessors */
 #define EA_BIT_GET(ea) ((ea) >> 24)
 
-typedef struct adata {
-  uint length;				/* Length of data */
-  byte data[0];
-} adata;
-
-extern const adata null_adata;		/* adata of length 0 */
-
-static inline struct adata *
-lp_alloc_adata(struct linpool *pool, uint len)
-{
-  struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len);
-  ad->length = len;
-  return ad;
-}
-
-static inline int adata_same(const struct adata *a, const struct adata *b)
-{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); }
-
-
 typedef struct ea_list {
   struct ea_list *next;			/* In case we have an override list */
   byte flags;				/* Flags: EALF_... */
diff --git a/lib/type.h b/lib/type.h
index d0a887d8..6d19a250 100644
--- a/lib/type.h
+++ b/lib/type.h
@@ -10,6 +10,7 @@
 #define _BIRD_TYPE_H_
 
 #include "lib/birdlib.h"
+#include "lib/attrs.h"
 
 union bval {
 #define BVAL_ITEMS	\
@@ -18,9 +19,25 @@ union bval {
   const struct adata *ptr;	/* Generic attribute data inherited from eattrs */	\
   const struct adata *ad;     	/* Generic attribute data inherited from filters */	\
 
-  BVAL_ITEMS
+  BVAL_ITEMS;
 };
 
+union bval_long {
+  union bval bval;		/* For direct assignments */
+  BVAL_ITEMS;			/* For item-wise access */
+
+  u64 ec;
+  lcomm lc;
+  ip_addr ip;
+  const net_addr *net;
+  const char *s;
+  const struct f_tree *t;
+  const struct f_trie *ti;
+  const struct f_path_mask *path_mask;
+  struct f_path_mask_item pmi;
+};
+
+
 /* Internal types */
 enum btype {
 /* Nothing. Simply nothing. */