diff --git a/nest/protocol.h b/nest/protocol.h
index 48eb01d2..abcc505d 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -616,7 +616,7 @@ struct channel {
 
 struct channel_config *proto_cf_find_channel(struct proto_config *p, uint net_type);
 static inline struct channel_config *proto_cf_main_channel(struct proto_config *pc)
-{ struct channel_config *cc = HEAD(pc->channels); return NODE_VALID(cc) ? cc : NULL; }
+{ return proto_cf_find_channel(pc, pc->net_type); }
 
 struct channel *proto_find_channel_by_table(struct proto *p, struct rtable *t);
 struct channel *proto_find_channel_by_name(struct proto *p, const char *n);
diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index fd2cfe8a..4b7d5a36 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -85,7 +85,7 @@ ospf_proto_finish(void)
   struct ospf_iface_patt *ic;
 
   /* Define default channel */
-  if (EMPTY_LIST(this_proto->channels))
+  if (! proto_cf_main_channel(this_proto))
   {
     uint net_type = this_proto->net_type = ospf_cfg_is_v2() ? NET_IP4 : NET_IP6;
     channel_config_new(NULL, net_label[net_type], net_type, this_proto);
@@ -248,8 +248,7 @@ ospf_channel_start: net_type ospf_af_mc
   $$ = this_channel = channel_config_get(NULL, net_label[$1], $1, this_proto);
 
   /* Save the multicast flag */
-  if (this_channel == proto_cf_main_channel(this_proto))
-    OSPF_CFG->af_mc = $2;
+  OSPF_CFG->af_mc = $2;
 };
 
 ospf_channel: ospf_channel_start channel_opt_list channel_end;
diff --git a/proto/radv/config.Y b/proto/radv/config.Y
index dda9cfcd..8d4a3ab9 100644
--- a/proto/radv/config.Y
+++ b/proto/radv/config.Y
@@ -46,6 +46,7 @@ proto: radv_proto ;
 radv_proto_start: proto_start RADV
 {
   this_proto = proto_config_new(&proto_radv, $1);
+  this_proto->net_type = NET_IP6;
 
   init_list(&RADV_CFG->patt_list);
   init_list(&RADV_CFG->pref_list);
diff --git a/proto/radv/radv.c b/proto/radv/radv.c
index b4235917..66e8eb4b 100644
--- a/proto/radv/radv.c
+++ b/proto/radv/radv.c
@@ -564,7 +564,7 @@ radv_postconfig(struct proto_config *CF)
   // struct radv_config *cf = (void *) CF;
 
   /* Define default channel */
-  if (EMPTY_LIST(CF->channels))
+  if (! proto_cf_main_channel(CF))
     channel_config_new(NULL, net_label[NET_IP6], NET_IP6, CF);
 }
 
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 8b4719f7..e1a235a0 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -1105,7 +1105,7 @@ rip_postconfig(struct proto_config *CF)
   // struct rip_config *cf = (void *) CF;
 
   /* Define default channel */
-  if (EMPTY_LIST(CF->channels))
+  if (! proto_cf_main_channel(CF))
     channel_config_new(NULL, net_label[CF->net_type], CF->net_type, CF);
 }
 
diff --git a/proto/rpki/rpki.c b/proto/rpki/rpki.c
index 799cb877..ab0837f3 100644
--- a/proto/rpki/rpki.c
+++ b/proto/rpki/rpki.c
@@ -923,7 +923,7 @@ rpki_postconfig(struct proto_config *CF)
 {
   /* Define default channel */
   if (EMPTY_LIST(CF->channels))
-    channel_config_new(NULL, net_label[CF->net_type], CF->net_type, CF);
+    cf_error("Channel not specified");
 }
 
 static void
diff --git a/proto/static/static.c b/proto/static/static.c
index 661f1aac..2789c1bb 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -434,7 +434,7 @@ static_postconfig(struct proto_config *CF)
   struct static_config *cf = (void *) CF;
   struct static_route *r;
 
-  if (EMPTY_LIST(CF->channels))
+  if (! proto_cf_main_channel(CF))
     cf_error("Channel not specified");
 
   struct channel_config *cc = proto_cf_main_channel(CF);
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index ceb88563..7c2614b1 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -1013,7 +1013,7 @@ krt_postconfig(struct proto_config *CF)
   if (cf->c.class == SYM_TEMPLATE)
     return;
 
-  if (EMPTY_LIST(CF->channels))
+  if (! proto_cf_main_channel(CF))
     cf_error("Channel not specified");
 
 #ifdef CONFIG_ALL_TABLES_AT_ONCE