diff --git a/nest/protocol.h b/nest/protocol.h
index d0810a8f..29d759ea 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -213,7 +213,7 @@ struct proto {
   void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a);
   void (*rt_notify)(struct proto *, struct channel *, struct network *net, struct rte *new, struct rte *old);
   void (*neigh_notify)(struct neighbor *neigh);
-  int (*preexport)(struct proto *, struct rte *rt);
+  int (*preexport)(struct channel *, struct rte *rt);
   void (*reload_routes)(struct channel *);
   void (*feed_begin)(struct channel *, int initial);
   void (*feed_end)(struct channel *);
diff --git a/nest/route.h b/nest/route.h
index 6641a8d7..a4f19fc4 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -320,7 +320,7 @@ rte *rte_find(net *net, struct rte_src *src);
 rte *rte_get_temp(struct rta *, struct rte_src *src);
 void rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src);
 /* rte_update() moved to protocol.h to avoid dependency conflicts */
-int rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter);
+int rt_examine(rtable *t, net_addr *a, struct channel *c, const struct filter *filter);
 rte *rt_export_merged(struct channel *c, net *net, rte **rt_free, linpool *pool, int silent);
 void rt_refresh_begin(rtable *t, struct channel *c);
 void rt_refresh_end(rtable *t, struct channel *c);
diff --git a/nest/rt-show.c b/nest/rt-show.c
index 19877966..183d023c 100644
--- a/nest/rt-show.c
+++ b/nest/rt-show.c
@@ -153,7 +153,7 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
       else if (d->export_mode)
 	{
 	  struct proto *ep = ec->proto;
-	  int ic = ep->preexport ? ep->preexport(ep, e) : 0;
+	  int ic = ep->preexport ? ep->preexport(ec, e) : 0;
 
 	  if (ec->ra_mode == RA_OPTIMAL || ec->ra_mode == RA_MERGED)
 	    pass = 1;
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 19bed165..97bbc4f0 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -725,7 +725,7 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
   rt = rt0;
   *rt_free = NULL;
 
-  v = p->preexport ? p->preexport(p, rt) : 0;
+  v = p->preexport ? p->preexport(c, rt) : 0;
   if (v < 0)
     {
       if (silent)
@@ -1683,8 +1683,9 @@ rte_modify(rte *old)
 
 /* Check rtable for best route to given net whether it would be exported do p */
 int
-rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter)
+rt_examine(rtable *t, net_addr *a, struct channel *c, const struct filter *filter)
 {
+  struct proto *p = c->proto;
   net *n = net_find(t, a);
   rte *rt = n ? n->routes : NULL;
 
@@ -1694,7 +1695,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter)
   rte_update_lock();
 
   /* Rest is stripped down export_filter() */
-  int v = p->preexport ? p->preexport(p, rt) : 0;
+  int v = p->preexport ? p->preexport(c, rt) : 0;
   if (v == RIC_PROCESS)
     v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT);
 
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index d9ebfbad..7ea1aba8 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -2256,11 +2256,11 @@ babel_kick_timer(struct babel_proto *p)
 
 
 static int
-babel_preexport(struct proto *P, struct rte *new)
+babel_preexport(struct channel *C, struct rte *new)
 {
   struct rta *a = new->attrs;
   /* Reject our own unreachable routes */
-  if ((a->dest == RTD_UNREACHABLE) && (new->src->proto == P))
+  if ((a->dest == RTD_UNREACHABLE) && (new->src->proto == C->proto))
     return -1;
 
   return 0;
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index d8948f29..2f6cf640 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -1676,10 +1676,10 @@ bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
  */
 
 int
-bgp_preexport(struct proto *P, rte *e)
+bgp_preexport(struct channel *C, rte *e)
 {
   struct proto *SRC = e->src->proto;
-  struct bgp_proto *p = (struct bgp_proto *) P;
+  struct bgp_proto *p = (struct bgp_proto *) C->proto;
   struct bgp_proto *src = (SRC->proto == &proto_bgp) ? (struct bgp_proto *) SRC : NULL;
 
   /* Reject our routes */
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index 8a44514c..13102857 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -587,7 +587,7 @@ int bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_be
 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_preexport(struct channel *, struct rte *);
 int bgp_get_attr(const struct eattr *e, byte *buf, int buflen);
 void bgp_get_route_info(struct rte *, byte *buf);
 int bgp_total_aigp_metric_(rte *e, u64 *metric, const struct adata **ad);
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index d8bcc838..ad4b2d14 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -107,7 +107,7 @@
 #include <stdlib.h>
 #include "ospf.h"
 
-static int ospf_preexport(struct proto *P, rte *new);
+static int ospf_preexport(struct channel *P, rte *new);
 static void ospf_reload_routes(struct channel *C);
 static int ospf_rte_better(struct rte *new, struct rte *old);
 static u32 ospf_rte_igp_metric(struct rte *rt);
@@ -482,13 +482,13 @@ ospf_disp(timer * timer)
  * import to the filters.
  */
 static int
-ospf_preexport(struct proto *P, rte *e)
+ospf_preexport(struct channel *C, rte *e)
 {
-  struct ospf_proto *p = (struct ospf_proto *) P;
+  struct ospf_proto *p = (struct ospf_proto *) C->proto;
   struct ospf_area *oa = ospf_main_area(p);
 
   /* Reject our own routes */
-  if (e->src->proto == P)
+  if (e->src->proto == &p->p)
     return -1;
 
   /* Do not export routes to stub areas */
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index c3457135..1f1ad857 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -97,11 +97,11 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
 }
 
 static int
-pipe_preexport(struct proto *P, rte *e)
+pipe_preexport(struct channel *C, rte *e)
 {
   struct proto *pp = e->sender->proto;
 
-  if (pp == P)
+  if (pp == C->proto)
     return -1;	/* Avoid local loops automatically */
 
   return 0;
diff --git a/proto/radv/radv.c b/proto/radv/radv.c
index 7985997a..541c3986 100644
--- a/proto/radv/radv.c
+++ b/proto/radv/radv.c
@@ -391,10 +391,10 @@ radv_net_match_trigger(struct radv_config *cf, net *n)
 }
 
 int
-radv_preexport(struct proto *P, rte *new)
+radv_preexport(struct channel *C, rte *new)
 {
   // struct radv_proto *p = (struct radv_proto *) P;
-  struct radv_config *cf = (struct radv_config *) (P->cf);
+  struct radv_config *cf = (struct radv_config *) (C->proto->cf);
 
   if (radv_net_match_trigger(cf, new->net))
     return RIC_PROCESS;
@@ -555,7 +555,7 @@ radv_check_active(struct radv_proto *p)
     return 1;
 
   struct channel *c = p->p.main_channel;
-  return rt_examine(c->table, &cf->trigger, &p->p, c->out_filter);
+  return rt_examine(c->table, &cf->trigger, c, c->out_filter);
 }
 
 static void
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index bfd69b73..be547a93 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -889,10 +889,10 @@ krt_scan_timer_kick(struct krt_proto *p)
  */
 
 static int
-krt_preexport(struct proto *P, rte *e)
+krt_preexport(struct channel *C, rte *e)
 {
   // struct krt_proto *p = (struct krt_proto *) P;
-  if (e->src->proto == P)
+  if (e->src->proto == C->proto)
     return -1;
 
   if (!krt_capable(e))