diff --git a/nest/proto.c b/nest/proto.c
index 5ddfb31e..03f502f7 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -759,8 +759,7 @@ channel_feed_end(struct channel *c)
   for (struct channel_feeding_request *cfr = c->refeeding, *next = cfr ? cfr->next : NULL;
       cfr;
       (cfr = next), (next = next ? next->next : NULL))
-    if (cfr->flags & CFRF_DYNAMIC)
-      mb_free(cfr);
+    CALL(cfr->done, cfr);
 
   /* Drop the refeed batch */
   c->refeeding = NULL;
@@ -1010,12 +1009,21 @@ channel_request_feeding(struct channel *c, struct channel_feeding_request *cfr)
     channel_init_feeding(c);
 }
 
+static void
+channel_feeding_request_done_dynamic(struct channel_feeding_request *req)
+{
+  mb_free(req);
+}
+
 void
 channel_request_feeding_dynamic(struct channel *c, enum channel_feeding_request_type type)
 {
-  struct channel_feeding_request *req = mb_allocz(c->proto->pool, sizeof *req);
-  req->type = type;
-  req->flags |= CFRF_DYNAMIC;
+  struct channel_feeding_request *req = mb_alloc(c->proto->pool, sizeof *req);
+  *req = (struct channel_feeding_request) {
+    .type = type,
+    .done = channel_feeding_request_done_dynamic,
+  };
+
   channel_request_feeding(c, req);
 }
 
diff --git a/nest/protocol.h b/nest/protocol.h
index ca33a7fc..7d0041f5 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -676,19 +676,17 @@ static inline void channel_open(struct channel *c) { channel_set_state(c, CS_UP)
 static inline void channel_close(struct channel *c) { channel_set_state(c, CS_STOP); }
 
 struct channel_feeding_request {
-  struct channel_feeding_request *next;
+  struct channel_feeding_request *next;			/* Next in request chain */
+  void (*done)(struct channel_feeding_request *);	/* Called when refeed finishes */
   PACKED enum channel_feeding_request_type {
-    CFRT_DIRECT = 1,
-    CFRT_AUXILIARY,
+    CFRT_DIRECT = 1,					/* Refeed by export restart */
+    CFRT_AUXILIARY,					/* Refeed by auxiliary request */
   } type;
   PACKED enum {
-    CFRS_INACTIVE = 0,
-    CFRS_PENDING,
-    CFRS_RUNNING,
+    CFRS_INACTIVE = 0,					/* Inactive request */
+    CFRS_PENDING,					/* Request enqueued, do not touch */
+    CFRS_RUNNING,					/* Request active, do not touch */
   } state;
-  PACKED enum {
-    CFRF_DYNAMIC = 1,
-  } flags;
 };
 
 struct channel *channel_from_export_request(struct rt_export_request *req);