Merge commit 'e42eedb9' into haugesund

20 files changed, 246 insertions, 302 deletions

diff --git a/doc/bird.sgml b/doc/bird.sgml
index 1d5ae056..4df1d94f 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1747,7 +1747,7 @@ Common route attributes are:
 
 	<tag><label id="rta-source"><m/enum/ source</tag>
 	what protocol has told me about this route. Possible values:
-	<cf/RTS_DUMMY/, <cf/RTS_STATIC/, <cf/RTS_INHERIT/, <cf/RTS_DEVICE/,
+	<cf/RTS_STATIC/, <cf/RTS_INHERIT/, <cf/RTS_DEVICE/,
 	<cf/RTS_RIP/, <cf/RTS_OSPF/, <cf/RTS_OSPF_IA/, <cf/RTS_OSPF_EXT1/,
 	<cf/RTS_OSPF_EXT2/, <cf/RTS_BGP/, <cf/RTS_PIPE/, <cf/RTS_BABEL/.
 
diff --git a/filter/test.conf b/filter/test.conf
index 484628e5..2a5a2d98 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -398,7 +398,6 @@ bt_test_suite(t_ip_set, "Testing sets of ip address");
 
 function t_enum()
 {
-	bt_assert(format(RTS_DUMMY)  = "(enum 30)0");
 	bt_assert(format(RTS_STATIC) = "(enum 30)1");
 	bt_assert(format(NET_IP4) = "(enum 36)1");
 	bt_assert(format(NET_VPN6) = "(enum 36)4");
diff --git a/nest/config.Y b/nest/config.Y
index 72bc7930..92a80589 100644
--- a/nest/config.Y
+++ b/nest/config.Y
@@ -130,7 +130,7 @@ CF_KEYWORDS(SORTED, TRIE, MIN, MAX, SETTLE, TIME)
 /* For r_args_channel */
 CF_KEYWORDS(IPV4, IPV4_MC, IPV4_MPLS, IPV6, IPV6_MC, IPV6_MPLS, IPV6_SADR, VPN4, VPN4_MC, VPN4_MPLS, VPN6, VPN6_MC, VPN6_MPLS, ROA4, ROA6, FLOW4, FLOW6, MPLS, PRI, SEC)
 
-CF_ENUM(T_ENUM_RTS, RTS_, DUMMY, STATIC, INHERIT, DEVICE, STATIC_DEVICE, REDIRECT,
+CF_ENUM(T_ENUM_RTS, RTS_, STATIC, INHERIT, DEVICE, STATIC_DEVICE, REDIRECT,
 	RIP, OSPF, OSPF_IA, OSPF_EXT1, OSPF_EXT2, BGP, PIPE, BABEL)
 CF_ENUM(T_ENUM_SCOPE, SCOPE_, HOST, LINK, SITE, ORGANIZATION, UNIVERSE, UNDEFINED)
 CF_ENUM(T_ENUM_RTD, RTD_, UNICAST, BLACKHOLE, UNREACHABLE, PROHIBIT)
diff --git a/nest/protocol.h b/nest/protocol.h
index 6ee97b7c..62fd2b66 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -241,6 +241,7 @@ struct proto {
   struct rte * (*rte_modify)(struct rte *, struct linpool *);
   void (*rte_insert)(struct network *, struct rte *);
   void (*rte_remove)(struct network *, struct rte *);
+  u32 (*rte_igp_metric)(struct rte *);
 
   /* Hic sunt protocol-specific data */
 };
diff --git a/nest/route.h b/nest/route.h
index 19c13538..9fd3bdcc 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -263,20 +263,6 @@ typedef struct rte {
   byte pflags;				/* Protocol-specific flags */
   btime lastmod;			/* Last modified */
   union {				/* Protocol-dependent data (metrics etc.) */
-#ifdef CONFIG_RIP
-    struct {
-      struct iface *from;		/* Incoming iface */
-      u8 metric;			/* RIP metric */
-      u16 tag;				/* External route tag */
-    } rip;
-#endif
-#ifdef CONFIG_OSPF
-    struct {
-      u32 metric1, metric2;		/* OSPF Type 1 and Type 2 metrics */
-      u32 tag;				/* External route tag */
-      u32 router_id;			/* Router that originated this route */
-    } ospf;
-#endif
 #ifdef CONFIG_BGP
     struct {
       u8 suppressed;			/* Used for deterministic MED comparison */
@@ -284,20 +270,6 @@ typedef struct rte {
       struct rtable *base_table;	/* Base table for Flowspec validation */
     } bgp;
 #endif
-#ifdef CONFIG_BABEL
-    struct {
-      u16 seqno;			/* Babel seqno */
-      u16 metric;			/* Babel metric */
-      u64 router_id;			/* Babel router id */
-    } babel;
-#endif
-    struct {				/* Routes generated by krt sync (both temporary and inherited ones) */
-      s8 src;				/* Alleged route source (see krt.h) */
-      u8 proto;				/* Kernel source protocol ID */
-      u8 seen;				/* Seen during last scan */
-      u8 best;				/* Best route in network, propagated to core */
-      u32 metric;			/* Kernel metric */
-    } krt;
   } u;
 } rte;
 
@@ -498,7 +470,6 @@ typedef struct rta {
   struct nexthop nh;			/* Next hop */
 } rta;
 
-#define RTS_DUMMY 0			/* Dummy route to be removed soon */
 #define RTS_STATIC 1			/* Normal static route */
 #define RTS_INHERIT 2			/* Route inherited from kernel */
 #define RTS_DEVICE 3			/* Device route */
@@ -546,8 +517,8 @@ typedef struct eattr {
   byte flags;				/* Protocol-dependent flags */
   byte type;				/* Attribute type and several flags (EAF_...) */
   union {
-    u32 data;
-    const struct adata *ptr;			/* Attribute data elsewhere */
+    uintptr_t data;
+    const struct adata *ptr;		/* Attribute data elsewhere */
   } u;
 } eattr;
 
@@ -578,6 +549,7 @@ const char *ea_custom_name(uint ea);
 #define EAF_TYPE_AS_PATH 0x06		/* BGP AS path (encoding per RFC 1771:4.3) */
 #define EAF_TYPE_BITFIELD 0x09		/* 32-bit embedded bitfield */
 #define EAF_TYPE_INT_SET 0x0a		/* Set of u32's (e.g., a community list) */
+#define EAF_TYPE_PTR 0x0d		/* Pointer to an object */
 #define EAF_TYPE_EC_SET 0x0e		/* Set of pairs of u32's - ext. community list */
 #define EAF_TYPE_LC_SET 0x12		/* Set of triplets of u32's - large community list */
 #define EAF_TYPE_UNDEF 0x1f		/* `force undefined' entry */
@@ -632,7 +604,7 @@ struct ea_walk_state {
 
 eattr *ea_find(ea_list *, unsigned ea);
 eattr *ea_walk(struct ea_walk_state *s, uint id, uint max);
-int ea_get_int(ea_list *, unsigned ea, int def);
+uintptr_t ea_get_int(ea_list *, unsigned ea, uintptr_t def);
 void ea_dump(ea_list *);
 void ea_sort(ea_list *);		/* Sort entries in all sub-lists */
 unsigned ea_scan(ea_list *);		/* How many bytes do we need for merged ea_list */
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 4057bf37..1bece201 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -61,7 +61,6 @@
 const adata null_adata;		/* adata of length 0 */
 
 const char * const rta_src_names[RTS_MAX] = {
-  [RTS_DUMMY]		= "",
   [RTS_STATIC]		= "static",
   [RTS_INHERIT]		= "inherit",
   [RTS_DEVICE]		= "device",
@@ -541,8 +540,8 @@ ea_walk(struct ea_walk_state *s, uint id, uint max)
  * by calling ea_find() to find the attribute, extracting its value or returning
  * a provided default if no such attribute is present.
  */
-int
-ea_get_int(ea_list *e, unsigned id, int def)
+uintptr_t
+ea_get_int(ea_list *e, unsigned id, uintptr_t def)
 {
   eattr *a = ea_find(e, id);
   if (!a)
@@ -1260,7 +1259,7 @@ rta_do_cow(rta *o, linpool *lp)
 void
 rta_dump(rta *a)
 {
-  static char *rts[] = { "RTS_DUMMY", "RTS_STATIC", "RTS_INHERIT", "RTS_DEVICE",
+  static char *rts[] = { "", "RTS_STATIC", "RTS_INHERIT", "RTS_DEVICE",
 			 "RTS_STAT_DEV", "RTS_REDIR", "RTS_RIP",
 			 "RTS_OSPF", "RTS_OSPF_IA", "RTS_OSPF_EXT1",
 			 "RTS_OSPF_EXT2", "RTS_BGP", "RTS_PIPE", "RTS_BABEL" };
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 65ff2a59..a5a8c421 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -1686,26 +1686,6 @@ rte_update_unlock(void)
     lp_flush(rte_update_pool);
 }
 
-static inline void
-rte_hide_dummy_routes(net *net, rte **dummy)
-{
-  if (net->routes && net->routes->attrs->source == RTS_DUMMY)
-  {
-    *dummy = net->routes;
-    net->routes = (*dummy)->next;
-  }
-}
-
-static inline void
-rte_unhide_dummy_routes(net *net, rte **dummy)
-{
-  if (*dummy)
-  {
-    (*dummy)->next = net->routes;
-    net->routes = *dummy;
-  }
-}
-
 /**
  * rte_update - enter a new update to a routing table
  * @table: table to be updated
@@ -1754,7 +1734,6 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
   // struct proto *p = c->proto;
   struct proto_stats *stats = &c->stats;
   const struct filter *filter = c->in_filter;
-  rte *dummy = NULL;
   net *nn;
 
   ASSERT(c->channel_state == CS_UP);
@@ -1833,9 +1812,7 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
 
  recalc:
   /* And recalculate the best route */
-  rte_hide_dummy_routes(nn, &dummy);
   rte_recalculate(c, nn, new, src);
-  rte_unhide_dummy_routes(nn, &dummy);
 
   rte_update_unlock();
   return;
@@ -3686,36 +3663,12 @@ rt_get_igp_metric(rte *rt)
   if (ea)
     return ea->u.data;
 
-  rta *a = rt->attrs;
-
-#ifdef CONFIG_OSPF
-  if ((a->source == RTS_OSPF) ||
-      (a->source == RTS_OSPF_IA) ||
-      (a->source == RTS_OSPF_EXT1))
-    return rt->u.ospf.metric1;
-#endif
-
-#ifdef CONFIG_RIP
-  if (a->source == RTS_RIP)
-    return rt->u.rip.metric;
-#endif
-
-#ifdef CONFIG_BGP
-  if (a->source == RTS_BGP)
-  {
-    u64 metric = bgp_total_aigp_metric(rt);
-    return (u32) MIN(metric, (u64) IGP_METRIC_UNKNOWN);
-  }
-#endif
-
-#ifdef CONFIG_BABEL
-  if (a->source == RTS_BABEL)
-    return rt->u.babel.metric;
-#endif
-
-  if (a->source == RTS_DEVICE)
+  if (rt->attrs->source == RTS_DEVICE)
     return 0;
 
+  if (rt->src->proto->rte_igp_metric)
+    return rt->src->proto->rte_igp_metric(rt);
+
   return IGP_METRIC_UNKNOWN;
 }
 
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index 09d8ad7e..30809000 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -648,6 +648,29 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
       .from = r->neigh->addr,
       .nh.gw = r->next_hop,
       .nh.iface = r->neigh->ifa->iface,
+      .eattrs = alloca(sizeof(ea_list) + 3*sizeof(eattr)),
+    };
+
+    *a0.eattrs = (ea_list) { .count = 3 };
+    a0.eattrs->attrs[0] = (eattr) {
+      .id = EA_BABEL_METRIC,
+      .type = EAF_TYPE_INT,
+      .u.data = r->metric,
+    };
+
+    struct adata *ad = alloca(sizeof(struct adata) + sizeof(u64));
+    ad->length = sizeof(u64);
+    memcpy(ad->data, &(r->router_id), sizeof(u64));
+    a0.eattrs->attrs[1] = (eattr) {
+      .id = EA_BABEL_ROUTER_ID,
+      .type = EAF_TYPE_OPAQUE,
+      .u.ptr = ad,
+    };
+
+    a0.eattrs->attrs[2] = (eattr) {
+      .id = EA_BABEL_SEQNO,
+      .type = EAF_TYPE_INT,
+      .u.data = r->seqno,
     };
 
     /*
@@ -660,10 +683,6 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
 
     rta *a = rta_lookup(&a0);
     rte *rte = rte_get_temp(a, p->p.main_source);
-    rte->u.babel.seqno = r->seqno;
-    rte->u.babel.metric = r->metric;
-    rte->u.babel.router_id = r->router_id;
-    rte->pflags = EA_ID_FLAG(EA_BABEL_METRIC) | EA_ID_FLAG(EA_BABEL_ROUTER_ID);
 
     e->unreachable = 0;
     rte_update2(c, e->n.addr, rte, p->p.main_source);
@@ -680,7 +699,6 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
 
     rta *a = rta_lookup(&a0);
     rte *rte = rte_get_temp(a, p->p.main_source);
-    memset(&rte->u.babel, 0, sizeof(rte->u.babel));
     rte->pflags = 0;
 
     e->unreachable = 1;
@@ -2009,7 +2027,13 @@ babel_dump(struct proto *P)
 static void
 babel_get_route_info(rte *rte, byte *buf)
 {
-  buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref, rte->u.babel.metric, rte->u.babel.router_id);
+  u64 rid = 0;
+  eattr *e = ea_find(rte->attrs->eattrs, EA_BABEL_ROUTER_ID);
+  if (e)
+    memcpy(&rid, e->u.ptr->data, sizeof(u64));
+
+  buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref,
+      ea_get_int(rte->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY), rid);
 }
 
 static int
@@ -2017,6 +2041,9 @@ babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
 {
   switch (a->id)
   {
+  case EA_BABEL_SEQNO:
+    return GA_FULL;
+
   case EA_BABEL_METRIC:
     bsprintf(buf, "metric: %d", a->u.data);
     return GA_FULL;
@@ -2240,27 +2267,6 @@ babel_preexport(struct proto *P, struct rte *new)
   return 0;
 }
 
-static void
-babel_make_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  struct adata *id = lp_alloc_adata(pool, sizeof(u64));
-  memcpy(id->data, &rt->u.babel.router_id, sizeof(u64));
-
-  rte_init_tmp_attrs(rt, pool, 2);
-  rte_make_tmp_attr(rt, EA_BABEL_METRIC, EAF_TYPE_INT, rt->u.babel.metric);
-  rte_make_tmp_attr(rt, EA_BABEL_ROUTER_ID, EAF_TYPE_OPAQUE, (uintptr_t) id);
-}
-
-static void
-babel_store_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 2);
-  rt->u.babel.metric = rte_store_tmp_attr(rt, EA_BABEL_METRIC);
-
-  /* EA_BABEL_ROUTER_ID is read-only, we do not really save the value */
-  rte_store_tmp_attr(rt, EA_BABEL_ROUTER_ID);
-}
-
 /*
  * babel_rt_notify - core tells us about new route (possibly our own),
  * so store it into our data structures.
@@ -2275,10 +2281,22 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
   if (new)
   {
     /* Update */
-    uint internal = (new->src->proto == P);
-    uint rt_seqno = internal ? new->u.babel.seqno : p->update_seqno;
+    uint rt_seqno;
     uint rt_metric = ea_get_int(new->attrs->eattrs, EA_BABEL_METRIC, 0);
-    u64 rt_router_id = internal ? new->u.babel.router_id : p->router_id;
+    u64 rt_router_id = 0;
+
+    if (new->src->proto == P)
+    {
+      rt_seqno = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
+      eattr *e = ea_find(new->attrs->eattrs, EA_BABEL_ROUTER_ID);
+      if (e)
+	memcpy(&rt_router_id, e->u.ptr->data, sizeof(u64));
+    }
+    else
+    {
+      rt_seqno = p->update_seqno;
+      rt_router_id = p->router_id;
+    }
 
     if (rt_metric > BABEL_INFINITY)
     {
@@ -2321,15 +2339,16 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
 static int
 babel_rte_better(struct rte *new, struct rte *old)
 {
-  return new->u.babel.metric < old->u.babel.metric;
+  uint new_metric = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
+  uint old_metric = ea_find(old->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
+
+  return new_metric < old_metric;
 }
 
-static int
-babel_rte_same(struct rte *new, struct rte *old)
+static u32
+babel_rte_igp_metric(struct rte *rt)
 {
-  return ((new->u.babel.seqno == old->u.babel.seqno) &&
-	  (new->u.babel.metric == old->u.babel.metric) &&
-	  (new->u.babel.router_id == old->u.babel.router_id));
+  return ea_get_int(rt->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY);
 }
 
 
@@ -2363,10 +2382,8 @@ babel_init(struct proto_config *CF)
   P->if_notify = babel_if_notify;
   P->rt_notify = babel_rt_notify;
   P->preexport = babel_preexport;
-  P->make_tmp_attrs = babel_make_tmp_attrs;
-  P->store_tmp_attrs = babel_store_tmp_attrs;
   P->rte_better = babel_rte_better;
-  P->rte_same = babel_rte_same;
+  P->rte_igp_metric = babel_rte_igp_metric;
 
   return P;
 }
diff --git a/proto/babel/babel.h b/proto/babel/babel.h
index 84feb085..8b6da3c8 100644
--- a/proto/babel/babel.h
+++ b/proto/babel/babel.h
@@ -28,6 +28,7 @@
 
 #define EA_BABEL_METRIC		EA_CODE(PROTOCOL_BABEL, 0)
 #define EA_BABEL_ROUTER_ID	EA_CODE(PROTOCOL_BABEL, 1)
+#define EA_BABEL_SEQNO		EA_CODE(PROTOCOL_BABEL, 2)
 
 #define BABEL_MAGIC		42
 #define BABEL_VERSION		2
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 09c0bc57..6963833a 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -374,6 +374,13 @@ bgp_init_aigp_metric(rte *e, u64 *metric, const struct adata **ad)
   return *metric < IGP_METRIC_UNKNOWN;
 }
 
+u32
+bgp_rte_igp_metric(struct rte *rt)
+{
+  u64 metric = bgp_total_aigp_metric(rt);
+  return (u32) MIN(metric, (u64) IGP_METRIC_UNKNOWN);
+}
+
 
 /*
  *	Attribute hooks
diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index b5a31ab7..52400762 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -1679,6 +1679,7 @@ bgp_init(struct proto_config *CF)
   P->rte_mergable = bgp_rte_mergable;
   P->rte_recalculate = cf->deterministic_med ? bgp_rte_recalculate : NULL;
   P->rte_modify = bgp_rte_modify_stale;
+  P->rte_igp_metric = bgp_rte_igp_metric;
 
   p->cf = cf;
   p->is_internal = (cf->local_as == cf->remote_as);
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index 9d25da21..26e04966 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -584,6 +584,7 @@ int bgp_rte_better(struct rte *, struct rte *);
 int bgp_rte_mergable(rte *pri, rte *sec);
 int bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best);
 struct rte *bgp_rte_modify_stale(struct rte *r, struct linpool *pool);
+u32 bgp_rte_igp_metric(struct rte *);
 void bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old);
 int bgp_preexport(struct proto *, struct rte *);
 int bgp_get_attr(const struct eattr *e, byte *buf, int buflen);
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 03b16350..f9aa6cd1 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -108,11 +108,9 @@
 #include "ospf.h"
 
 static int ospf_preexport(struct proto *P, rte *new);
-static void ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
-static void ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool);
 static void ospf_reload_routes(struct channel *C);
 static int ospf_rte_better(struct rte *new, struct rte *old);
-static int ospf_rte_same(struct rte *new, struct rte *old);
+static u32 ospf_rte_igp_metric(struct rte *rt);
 static void ospf_disp(timer *timer);
 
 
@@ -378,10 +376,8 @@ ospf_init(struct proto_config *CF)
   P->reload_routes = ospf_reload_routes;
   P->feed_begin = ospf_feed_begin;
   P->feed_end = ospf_feed_end;
-  P->make_tmp_attrs = ospf_make_tmp_attrs;
-  P->store_tmp_attrs = ospf_store_tmp_attrs;
   P->rte_better = ospf_rte_better;
-  P->rte_same = ospf_rte_same;
+  P->rte_igp_metric = ospf_rte_igp_metric;
 
   return P;
 }
@@ -390,7 +386,9 @@ ospf_init(struct proto_config *CF)
 static int
 ospf_rte_better(struct rte *new, struct rte *old)
 {
-  if (new->u.ospf.metric1 == LSINFINITY)
+  u32 new_metric1 = ea_get_int(new->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+
+  if (new_metric1 == LSINFINITY)
     return 0;
 
   if(new->attrs->source < old->attrs->source) return 1;
@@ -398,27 +396,27 @@ ospf_rte_better(struct rte *new, struct rte *old)
 
   if(new->attrs->source == RTS_OSPF_EXT2)
   {
-    if(new->u.ospf.metric2 < old->u.ospf.metric2) return 1;
-    if(new->u.ospf.metric2 > old->u.ospf.metric2) return 0;
+    u32 old_metric2 = ea_get_int(old->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY);
+    u32 new_metric2 = ea_get_int(new->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY);
+    if(new_metric2 < old_metric2) return 1;
+    if(new_metric2 > old_metric2) return 0;
   }
 
-  if (new->u.ospf.metric1 < old->u.ospf.metric1)
+  u32 old_metric1 = ea_get_int(old->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+  if (new_metric1 < old_metric1)
     return 1;
 
   return 0;			/* Old is shorter or same */
 }
 
-static int
-ospf_rte_same(struct rte *new, struct rte *old)
+static u32
+ospf_rte_igp_metric(struct rte *rt)
 {
-  /* new->attrs == old->attrs always */
-  return
-    new->u.ospf.metric1 == old->u.ospf.metric1 &&
-    new->u.ospf.metric2 == old->u.ospf.metric2 &&
-    new->u.ospf.tag == old->u.ospf.tag &&
-    new->u.ospf.router_id == old->u.ospf.router_id;
-}
+  if (rt->attrs->source == RTS_OSPF_EXT2)
+    return IGP_METRIC_UNKNOWN;
 
+  return ea_get_int(rt->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+}
 
 void
 ospf_schedule_rtcalc(struct ospf_proto *p)
@@ -500,26 +498,6 @@ ospf_preexport(struct proto *P, rte *e)
   return 0;
 }
 
-static void
-ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 4);
-  rte_make_tmp_attr(rt, EA_OSPF_METRIC1, EAF_TYPE_INT, rt->u.ospf.metric1);
-  rte_make_tmp_attr(rt, EA_OSPF_METRIC2, EAF_TYPE_INT, rt->u.ospf.metric2);
-  rte_make_tmp_attr(rt, EA_OSPF_TAG, EAF_TYPE_INT, rt->u.ospf.tag);
-  rte_make_tmp_attr(rt, EA_OSPF_ROUTER_ID, EAF_TYPE_ROUTER_ID, rt->u.ospf.router_id);
-}
-
-static void
-ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 4);
-  rt->u.ospf.metric1 = rte_store_tmp_attr(rt, EA_OSPF_METRIC1);
-  rt->u.ospf.metric2 = rte_store_tmp_attr(rt, EA_OSPF_METRIC2);
-  rt->u.ospf.tag = rte_store_tmp_attr(rt, EA_OSPF_TAG);
-  rt->u.ospf.router_id = rte_store_tmp_attr(rt, EA_OSPF_ROUTER_ID);
-}
-
 /**
  * ospf_shutdown - Finish of OSPF instance
  * @P: OSPF protocol instance
@@ -609,16 +587,20 @@ ospf_get_route_info(rte * rte, byte * buf)
   }
 
   buf += bsprintf(buf, " %s", type);
-  buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, rte->u.ospf.metric1);
+  buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY));
   if (rte->attrs->source == RTS_OSPF_EXT2)
-    buf += bsprintf(buf, "/%d", rte->u.ospf.metric2);
+    buf += bsprintf(buf, "/%d", ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY));
   buf += bsprintf(buf, ")");
-  if ((rte->attrs->source == RTS_OSPF_EXT1 || rte->attrs->source == RTS_OSPF_EXT2) && rte->u.ospf.tag)
+  if (rte->attrs->source == RTS_OSPF_EXT1 || rte->attrs->source == RTS_OSPF_EXT2)
   {
-    buf += bsprintf(buf, " [%x]", rte->u.ospf.tag);
+    eattr *ea = ea_find(rte->attrs->eattrs, EA_OSPF_TAG);
+    if (ea && (ea->u.data > 0))
+      buf += bsprintf(buf, " [%x]", ea->u.data);
   }
-  if (rte->u.ospf.router_id)
-    buf += bsprintf(buf, " [%R]", rte->u.ospf.router_id);
+  
+  eattr *ea = ea_find(rte->attrs->eattrs, EA_OSPF_ROUTER_ID);
+  if (ea)
+    buf += bsprintf(buf, " [%R]", ea->u.data);
 }
 
 static int
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index cda464e0..471bb586 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -144,7 +144,7 @@ orta_compare(const struct ospf_proto *p, const orta *new, const orta *old)
 {
   int r;
 
-  if (old->type == RTS_DUMMY)
+  if (!old->type)
     return 1;
 
   /* Prefer intra-area to inter-area to externals */
@@ -195,7 +195,7 @@ orta_compare_asbr(const struct ospf_proto *p, const orta *new, const orta *old)
 {
   int r;
 
-  if (old->type == RTS_DUMMY)
+  if (!old->type)
     return 1;
 
   if (!p->rfc1583)
@@ -225,7 +225,7 @@ orta_compare_ext(const struct ospf_proto *p, const orta *new, const orta *old)
 {
   int r;
 
-  if (old->type == RTS_DUMMY)
+  if (!old->type)
     return 1;
 
   /* 16.4 (6a) - prefer routes with lower type */
@@ -2062,23 +2062,45 @@ again1:
 
       if (reload || ort_changed(nf, &a0))
       {
-	rta *a = rta_lookup(&a0);
-	rte *e = rte_get_temp(a, p->p.main_source);
+	a0.eattrs = alloca(sizeof(ea_list) + 4 * sizeof(eattr));
+	memset(a0.eattrs, 0, sizeof(ea_list));
 
-	rta_free(nf->old_rta);
-	nf->old_rta = rta_clone(a);
-	e->u.ospf.metric1 = nf->old_metric1 = nf->n.metric1;
-	e->u.ospf.metric2 = nf->old_metric2 = nf->n.metric2;
-	e->u.ospf.tag = nf->old_tag = nf->n.tag;
-	e->u.ospf.router_id = nf->old_rid = nf->n.rid;
-	e->pflags = EA_ID_FLAG(EA_OSPF_METRIC1) | EA_ID_FLAG(EA_OSPF_ROUTER_ID);
+	nf->old_metric1 = nf->n.metric1;
+	nf->old_metric2 = nf->n.metric2;
+	nf->old_tag = nf->n.tag;
+	nf->old_rid = nf->n.rid;
+
+	a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	  .id = EA_OSPF_METRIC1,
+	  .type = EAF_TYPE_INT,
+	  .u.data = nf->n.metric1,
+	};
 
 	if (nf->n.type == RTS_OSPF_EXT2)
-	  e->pflags |= EA_ID_FLAG(EA_OSPF_METRIC2);
+	  a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	    .id = EA_OSPF_METRIC2,
+	    .type = EAF_TYPE_INT,
+	    .u.data = nf->n.metric2,
+	  };
 
-	/* Perhaps onfly if tag is non-zero? */
 	if ((nf->n.type == RTS_OSPF_EXT1) || (nf->n.type == RTS_OSPF_EXT2))
-	  e->pflags |= EA_ID_FLAG(EA_OSPF_TAG);
+	  a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	    .id = EA_OSPF_TAG,
+	    .type = EAF_TYPE_INT,
+	    .u.data = nf->n.tag,
+	  };
+
+	a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	  .id = EA_OSPF_ROUTER_ID,
+	  .type = EAF_TYPE_ROUTER_ID,
+	  .u.data = nf->n.rid,
+	};
+
+	rta *a = rta_lookup(&a0);
+	rte *e = rte_get_temp(a, p->p.main_source);
+
+	rta_free(nf->old_rta);
+	nf->old_rta = rta_clone(a);
 
 	DBG("Mod rte type %d - %N via %I on iface %s, met %d\n",
 	    a0.source, nf->fn.addr, a0.gw, a0.iface ? a0.iface->name : "(none)", nf->n.metric1);
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index f2e56e93..0556939a 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -188,12 +188,28 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
       a0.nh.iface = rt->from->ifa->iface;
     }
 
+    a0.eattrs = alloca(sizeof(ea_list) + 3*sizeof(eattr));
+    memset(a0.eattrs, 0, sizeof(ea_list)); /* Zero-ing only the ea_list header */
+    a0.eattrs->count = 3;
+    a0.eattrs->attrs[0] = (eattr) {
+      .id = EA_RIP_METRIC,
+      .type = EAF_TYPE_INT,
+      .u.data = rt_metric,
+    };
+    a0.eattrs->attrs[1] = (eattr) {
+      .id = EA_RIP_TAG,
+      .type = EAF_TYPE_INT,
+      .u.data = rt_tag,
+    };
+    a0.eattrs->attrs[2] = (eattr) {
+      .id = EA_RIP_FROM,
+      .type = EAF_TYPE_PTR,
+      .u.data = (uintptr_t) a0.nh.iface,
+    };
+
     rta *a = rta_lookup(&a0);
     rte *e = rte_get_temp(a, p->p.main_source);
 
-    e->u.rip.from = a0.nh.iface;
-    e->u.rip.metric = rt_metric;
-    e->u.rip.tag = rt_tag;
     e->pflags = EA_ID_FLAG(EA_RIP_METRIC) | EA_ID_FLAG(EA_RIP_TAG);
 
     rte_update(&p->p, en->n.addr, e);
@@ -307,8 +323,9 @@ rip_rt_notify(struct proto *P, struct channel *ch UNUSED, struct network *net, s
   if (new)
   {
     /* Update */
-    u32 rt_metric = ea_get_int(new->attrs->eattrs, EA_RIP_METRIC, 1);
     u32 rt_tag = ea_get_int(new->attrs->eattrs, EA_RIP_TAG, 0);
+    u32 rt_metric = ea_get_int(new->attrs->eattrs, EA_RIP_METRIC, 1);
+    struct iface *rt_from = (struct iface *) ea_get_int(new->attrs->eattrs, EA_RIP_FROM, 0);
 
     if (rt_metric > p->infinity)
     {
@@ -339,7 +356,7 @@ rip_rt_notify(struct proto *P, struct channel *ch UNUSED, struct network *net, s
     en->valid = RIP_ENTRY_VALID;
     en->metric = rt_metric;
     en->tag = rt_tag;
-    en->from = (new->src->proto == P) ? new->u.rip.from : NULL;
+    en->from = (new->src->proto == P) ? rt_from : NULL;
     en->iface = new->attrs->nh.iface;
     en->next_hop = new->attrs->nh.gw;
   }
@@ -1068,37 +1085,24 @@ rip_reload_routes(struct channel *C)
   rip_kick_timer(p);
 }
 
-static void
-rip_make_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 2);
-  rte_make_tmp_attr(rt, EA_RIP_METRIC, EAF_TYPE_INT, rt->u.rip.metric);
-  rte_make_tmp_attr(rt, EA_RIP_TAG, EAF_TYPE_INT, rt->u.rip.tag);
-}
-
-static void
-rip_store_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 2);
-  rt->u.rip.metric = rte_store_tmp_attr(rt, EA_RIP_METRIC);
-  rt->u.rip.tag = rte_store_tmp_attr(rt, EA_RIP_TAG);
-}
-
 static int
 rip_rte_better(struct rte *new, struct rte *old)
 {
-  return new->u.rip.metric < old->u.rip.metric;
+  ASSERT_DIE(new->src == old->src);
+  struct rip_proto *p = (struct rip_proto *) new->src->proto;
+
+  u32 new_metric = ea_get_int(new->attrs->eattrs, EA_RIP_METRIC, p->infinity);
+  u32 old_metric = ea_get_int(old->attrs->eattrs, EA_RIP_METRIC, p->infinity);
+
+  return new_metric < old_metric;
 }
 
-static int
-rip_rte_same(struct rte *new, struct rte *old)
+static u32
+rip_rte_igp_metric(struct rte *rt)
 {
-  return ((new->u.rip.metric == old->u.rip.metric) &&
-	  (new->u.rip.tag == old->u.rip.tag) &&
-	  (new->u.rip.from == old->u.rip.from));
+  return ea_get_int(rt->attrs->eattrs, EA_RIP_METRIC, IGP_METRIC_UNKNOWN);
 }
 
-
 static void
 rip_postconfig(struct proto_config *CF)
 {
@@ -1120,10 +1124,8 @@ rip_init(struct proto_config *CF)
   P->rt_notify = rip_rt_notify;
   P->neigh_notify = rip_neigh_notify;
   P->reload_routes = rip_reload_routes;
-  P->make_tmp_attrs = rip_make_tmp_attrs;
-  P->store_tmp_attrs = rip_store_tmp_attrs;
   P->rte_better = rip_rte_better;
-  P->rte_same = rip_rte_same;
+  P->rte_igp_metric = rip_rte_igp_metric;
 
   return P;
 }
@@ -1198,10 +1200,14 @@ rip_reconfigure(struct proto *P, struct proto_config *CF)
 static void
 rip_get_route_info(rte *rte, byte *buf)
 {
-  buf += bsprintf(buf, " (%d/%d)", rte->attrs->pref, rte->u.rip.metric);
+  struct rip_proto *p = (struct rip_proto *) rte->src->proto;
+  u32 rt_metric = ea_get_int(rte->attrs->eattrs, EA_RIP_METRIC, p->infinity);
+  u32 rt_tag = ea_get_int(rte->attrs->eattrs, EA_RIP_TAG, 0);
+
+  buf += bsprintf(buf, " (%d/%d)", rte->attrs->pref, rt_metric);
 
-  if (rte->u.rip.tag)
-    bsprintf(buf, " [%04x]", rte->u.rip.tag);
+  if (rt_tag)
+    bsprintf(buf, " [%04x]", rt_tag);
 }
 
 static int
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index 8d347000..f8713c4a 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -197,6 +197,7 @@ struct rip_rte
 
 #define EA_RIP_METRIC		EA_CODE(PROTOCOL_RIP, 0)
 #define EA_RIP_TAG		EA_CODE(PROTOCOL_RIP, 1)
+#define EA_RIP_FROM		EA_CODE(PROTOCOL_RIP, 2)
 
 static inline int rip_is_v2(struct rip_proto *p)
 { return p->rip2; }
diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c
index 521f43f3..efdb18a3 100644
--- a/sysdep/bsd/krt-sock.c
+++ b/sysdep/bsd/krt-sock.c
@@ -582,16 +582,21 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
  done:
   e = rte_get_temp(&a);
   e->net = net;
-  e->u.krt.src = src;
-  e->u.krt.proto = src2;
-  e->u.krt.seen = 0;
-  e->u.krt.best = 0;
-  e->u.krt.metric = 0;
+
+  ea_list *ea = alloca(sizeof(ea_list) + 1 * sizeof(eattr));
+  *ea = (ea_list) { .count = 1, .next = e->attrs->eattrs };
+  e->attrs->eattrs = ea;
+
+  ea->attrs[0] = (eattr) {
+    .id = EA_KRT_SOURCE,
+    .type = EAF_TYPE_INT,
+    .u.data = src2,
+  };
 
   if (scan)
-    krt_got_route(p, e);
+    krt_got_route(p, e, src);
   else
-    krt_got_route_async(p, e, new);
+    krt_got_route_async(p, e, new, src);
 }
 
 static void
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index d8ac2e82..e103c8ef 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -1397,8 +1397,6 @@ nl_send_route(struct krt_proto *p, rte *e, int op, int dest, struct nexthop *nh)
 
   if (p->af == AF_MPLS)
     priority = 0;
-  else if (a->source == RTS_DUMMY)
-    priority = e->u.krt.metric;
   else if (KRT_CF->sys.metric)
     priority = KRT_CF->sys.metric;
   else if ((op != NL_OP_DELETE) && (ea = ea_find(eattrs, EA_KRT_METRIC)))
@@ -1582,16 +1580,26 @@ nl_announce_route(struct nl_parse_state *s)
 {
   rte *e = rte_get_temp(s->attrs, s->proto->p.main_source);
   e->net = s->net;
-  e->u.krt.src = s->krt_src;
-  e->u.krt.proto = s->krt_proto;
-  e->u.krt.seen = 0;
-  e->u.krt.best = 0;
-  e->u.krt.metric = s->krt_metric;
+
+  ea_list *ea = alloca(sizeof(ea_list) + 2 * sizeof(eattr));
+  *ea = (ea_list) { .count = 2, .next = e->attrs->eattrs };
+  e->attrs->eattrs = ea;
+
+  ea->attrs[0] = (eattr) {
+    .id = EA_KRT_SOURCE,
+    .type = EAF_TYPE_INT,
+    .u.data = s->krt_proto,
+  };
+  ea->attrs[1] = (eattr) {
+    .id = EA_KRT_METRIC,
+    .type = EAF_TYPE_INT,
+    .u.data = s->krt_metric,
+  };
 
   if (s->scan)
-    krt_got_route(s->proto, e);
+    krt_got_route(s->proto, e, s->krt_src);
   else
-    krt_got_route_async(s->proto, e, s->new);
+    krt_got_route_async(s->proto, e, s->new, s->krt_src);
 
   s->net = NULL;
   s->attrs = NULL;
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index c03fa047..495ab986 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -277,22 +277,23 @@ static struct tbf rl_alien = TBF_DEFAULT_LOG_LIMITS;
  * the same key.
  */
 
+static inline u32
+krt_metric(rte *a)
+{
+  eattr *ea = ea_find(a->attrs->eattrs, EA_KRT_METRIC);
+  return ea ? ea->u.data : 0;
+}
+
 static inline int
 krt_same_key(rte *a, rte *b)
 {
-  return a->u.krt.metric == b->u.krt.metric;
+  return (krt_metric(a) == krt_metric(b));
 }
 
 static inline int
 krt_uptodate(rte *a, rte *b)
 {
-  if (a->attrs != b->attrs)
-    return 0;
-
-  if (a->u.krt.proto != b->u.krt.proto)
-    return 0;
-
-  return 1;
+  return (a->attrs == b->attrs);
 }
 
 static void
@@ -301,8 +302,6 @@ krt_learn_announce_update(struct krt_proto *p, rte *e)
   net *n = e->net;
   rta *aa = rta_clone(e->attrs);
   rte *ee = rte_get_temp(aa, p->p.main_source);
-  ee->pflags = EA_ID_FLAG(EA_KRT_SOURCE) | EA_ID_FLAG(EA_KRT_METRIC);
-  ee->u.krt = e->u.krt;
   rte_update(&p->p, n->n.addr, ee);
 }
 
@@ -331,7 +330,7 @@ krt_learn_scan(struct krt_proto *p, rte *e)
 	{
 	  krt_trace_in_rl(&rl_alien, p, e, "[alien] seen");
 	  rte_free(e);
-	  m->u.krt.seen = 1;
+	  m->pflags |= KRT_REF_SEEN;
 	}
       else
 	{
@@ -347,7 +346,7 @@ krt_learn_scan(struct krt_proto *p, rte *e)
     {
       e->next = n->routes;
       n->routes = e;
-      e->u.krt.seen = 1;
+      e->pflags |= KRT_REF_SEEN;
     }
 }
 
@@ -377,24 +376,23 @@ again:
       ee = &n->routes;
       while (e = *ee)
 	{
-	  if (e->u.krt.best)
+	  if (e->pflags & KRT_REF_BEST)
 	    old_best = e;
 
-	  if (!e->u.krt.seen)
+	  if (!(e->pflags & KRT_REF_SEEN))
 	    {
 	      *ee = e->next;
 	      rte_free(e);
 	      continue;
 	    }
 
-	  if (!best || best->u.krt.metric > e->u.krt.metric)
+	  if (!best || krt_metric(best) > krt_metric(e))
 	    {
 	      best = e;
 	      pbest = ee;
 	    }
 
-	  e->u.krt.seen = 0;
-	  e->u.krt.best = 0;
+	  e->pflags &= ~(KRT_REF_SEEN | KRT_REF_BEST);
 	  ee = &e->next;
 	}
       if (!n->routes)
@@ -408,18 +406,18 @@ again:
 	  goto again;
 	}
 
-      best->u.krt.best = 1;
+      best->pflags |= KRT_REF_BEST;
       *pbest = best->next;
       best->next = n->routes;
       n->routes = best;
 
       if ((best != old_best) || p->reload)
 	{
-	  DBG("%I/%d: announcing (metric=%d)\n", n->n.prefix, n->n.pxlen, best->u.krt.metric);
+	  DBG("%I/%d: announcing (metric=%d)\n", n->n.prefix, n->n.pxlen, krt_metric(best));
 	  krt_learn_announce_update(p, best);
 	}
       else
-	DBG("%I/%d: uptodate (metric=%d)\n", n->n.prefix, n->n.pxlen, best->u.krt.metric);
+	DBG("%I/%d: uptodate (metric=%d)\n", n->n.prefix, n->n.pxlen, krt_metric(best));
     }
   FIB_ITERATE_END;
 
@@ -479,18 +477,18 @@ krt_learn_async(struct krt_proto *p, rte *e, int new)
   bestp = &n->routes;
   for(gg=&n->routes; g=*gg; gg=&g->next)
   {
-    if (best->u.krt.metric > g->u.krt.metric)
+    if (krt_metric(best) > krt_metric(g))
       {
 	best = g;
 	bestp = gg;
       }
 
-    g->u.krt.best = 0;
+    g->pflags &= ~KRT_REF_BEST;
   }
 
   if (best)
     {
-      best->u.krt.best = 1;
+      best->pflags |= KRT_REF_BEST;
       *bestp = best->next;
       best->next = n->routes;
       n->routes = best;
@@ -531,12 +529,6 @@ krt_dump(struct proto *P)
   rt_dump(p->krt_table);
 }
 
-static void
-krt_dump_attrs(rte *e)
-{
-  debug(" [m=%d,p=%d]", e->u.krt.metric, e->u.krt.proto);
-}
-
 #endif
 
 /*
@@ -627,13 +619,14 @@ krt_same_dest(rte *k, rte *e)
  */
 
 void
-krt_got_route(struct krt_proto *p, rte *e)
+krt_got_route(struct krt_proto *p, rte *e, s8 src)
 {
   rte *new = NULL, *rt_free = NULL;
   net *n = e->net;
+  e->pflags = 0;
 
 #ifdef KRT_ALLOW_LEARN
-  switch (e->u.krt.src)
+  switch (src)
     {
     case KRT_SRC_KERNEL:
       goto ignore;
@@ -755,11 +748,12 @@ krt_prune(struct krt_proto *p)
 }
 
 void
-krt_got_route_async(struct krt_proto *p, rte *e, int new)
+krt_got_route_async(struct krt_proto *p, rte *e, int new, s8 src)
 {
   net *net = e->net;
+  e->pflags = 0;
 
-  switch (e->u.krt.src)
+  switch (src)
     {
     case KRT_SRC_BIRD:
       /* Should be filtered by the back end */
@@ -889,22 +883,6 @@ krt_scan_timer_kick(struct krt_proto *p)
  *	Updates
  */
 
-static void
-krt_make_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 2);
-  rte_make_tmp_attr(rt, EA_KRT_SOURCE, EAF_TYPE_INT, rt->u.krt.proto);
-  rte_make_tmp_attr(rt, EA_KRT_METRIC, EAF_TYPE_INT, rt->u.krt.metric);
-}
-
-static void
-krt_store_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 2);
-  rt->u.krt.proto = rte_store_tmp_attr(rt, EA_KRT_SOURCE);
-  rt->u.krt.metric = rte_store_tmp_attr(rt, EA_KRT_METRIC);
-}
-
 static int
 krt_preexport(struct proto *P, rte *e)
 {
@@ -984,14 +962,6 @@ krt_feed_end(struct channel *C)
 }
 
 
-static int
-krt_rte_same(rte *a, rte *b)
-{
-  /* src is always KRT_SRC_ALIEN and type is irrelevant */
-  return (a->u.krt.proto == b->u.krt.proto) && (a->u.krt.metric == b->u.krt.metric);
-}
-
-
 /*
  *	Protocol glue
  */
@@ -1050,9 +1020,6 @@ krt_init(struct proto_config *CF)
   p->p.if_notify = krt_if_notify;
   p->p.reload_routes = krt_reload_routes;
   p->p.feed_end = krt_feed_end;
-  p->p.make_tmp_attrs = krt_make_tmp_attrs;
-  p->p.store_tmp_attrs = krt_store_tmp_attrs;
-  p->p.rte_same = krt_rte_same;
 
   krt_sys_init(p);
   return &p->p;
@@ -1210,6 +1177,5 @@ struct protocol proto_unix_kernel = {
   .get_attr =		krt_get_attr,
 #ifdef KRT_ALLOW_LEARN
   .dump =		krt_dump,
-  .dump_attrs =		krt_dump_attrs,
 #endif
 };
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 62228f08..20858cd7 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -24,6 +24,9 @@ struct kif_proto;
 #define EA_KRT_SOURCE	EA_CODE(PROTOCOL_KERNEL, 0)
 #define EA_KRT_METRIC	EA_CODE(PROTOCOL_KERNEL, 1)
 
+#define KRT_REF_SEEN	0x1	/* Seen in table */
+#define KRT_REF_BEST	0x2	/* Best in table */
+
 /* Whenever we recognize our own routes, we allow learing of foreign routes */
 
 #ifdef CONFIG_SELF_CONSCIOUS
@@ -76,8 +79,8 @@ extern pool *krt_pool;
 
 struct proto_config * kif_init_config(int class);
 void kif_request_scan(void);
-void krt_got_route(struct krt_proto *p, struct rte *e);
-void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);
+void krt_got_route(struct krt_proto *p, struct rte *e, s8 src);
+void krt_got_route_async(struct krt_proto *p, struct rte *e, int new, s8 src);
 
 static inline int
 krt_get_sync_error(struct krt_proto *p, struct rte *e)